Document and Entity Information - shares	6 Months Ended
Document and Entity Information - shares	Jun. 30, 2018	Aug. 02, 2018
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q2
Trading Symbol	VTVT
Entity Registrant Name	vTv Therapeutics Inc.
Entity Central Index Key	0001641489
Current Fiscal Year End Date	--12-31
Entity Filer Category	Smaller Reporting Company
Class A Common Stock [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		11,442,274
Class B Common Stock [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		23,094,221

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 1,163	$ 11,758
Restricted cash and cash equivalents		162
Accounts receivable, net	2,270	8,000
Prepaid expenses and other current assets	264	442
Current deposits	2,311
Total current assets	6,008	20,362
Restricted cash and cash equivalents, long-term	2,500	2,500
Property and equipment, net	202	283
Long-term investments	2,480	2,480
Long-term deposits	36	2,292
Total assets	11,226	27,917
Current liabilities:
Accounts payable and accrued expenses	13,144	13,901
Current portion of deferred revenue	10,114	8,757
Current portion of notes payable	8,229	4,271
Total current liabilities	31,487	26,929
Notes payable	10,863	15,316
Deferred revenue, net of current portion	603	4,497
Warrant liability, related party	201	492
Other liabilities	256	290
Total liabilities	43,410	47,524
Commitments and contingencies
Redeemable noncontrolling interest	39,413	131,440
Stockholders’ deficit:
Additional paid-in capital	134,587	127,682
Accumulated deficit	(206,525)	(279,058)
Total stockholders’ deficit attributable to vTv Therapeutics Inc.	(71,597)	(151,047)
Total liabilities, redeemable noncontrolling interest and stockholders’ deficit	11,226	27,917
Class A Common Stock [Member]
Stockholders’ deficit:
Common stock value	109	97
Total stockholders’ deficit attributable to vTv Therapeutics Inc.	109	97
Class B Common Stock [Member]
Stockholders’ deficit:
Common stock value	232	232
Total stockholders’ deficit attributable to vTv Therapeutics Inc.	$ 232	$ 232

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2018	Dec. 31, 2017
Class A Common Stock [Member]
Common stock par value	$ 0.01	$ 0.01
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares outstanding	10,871,498	9,693,254
Class B Common Stock [Member]
Common stock par value	$ 0.01	$ 0.01
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares outstanding	23,094,221	23,119,246

Condensed Consolidated Statements of Operations - (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenue	$ 2,473,000	$ 13,000	$ 4,537,000	$ 43,000
Operating expenses:
Research and development	8,594,000	9,623,000	17,537,000	20,583,000
General and administrative	2,737,000	3,005,000	4,992,000	5,829,000
Total operating expenses	11,331,000	12,628,000	22,529,000	26,412,000
Operating loss	(8,858,000)	(12,615,000)	(17,992,000)	(26,369,000)
Other income			36,000
Other income – related party	316,000		291,000
Interest income	16,000	33,000	34,000	60,000
Interest expense	(870,000)	(832,000)	(1,725,000)	(1,391,000)
Loss before income taxes and noncontrolling interest	(9,396,000)	(13,414,000)	(19,356,000)	(27,700,000)
Income tax provision	200,000	0	200,000	0
Net loss before noncontrolling interest	(9,596,000)	(13,414,000)	(19,556,000)	(27,700,000)
Less: net loss attributable to noncontrolling interest	(6,524,000)	(9,451,000)	(13,532,000)	(19,517,000)
Net loss attributable to vTv Therapeutics Inc.	$ (3,072,000)	$ (3,963,000)	$ (6,024,000)	$ (8,183,000)
Class A Common Stock [Member]
Operating expenses:
Net loss per share of vTv Therapeutics Inc. Class A Common Stock, basic and diluted	$ (0.31)	$ (0.41)	$ (0.61)	$ (0.84)
Weighted-average number of vTv Therapeutics Inc. Class A Common Stock, basic and diluted	10,049,831	9,693,254	9,875,743	9,693,254

Condensed Consolidated Statement of Changes in Redeemable Noncontrolling Interest and Stockholders' Deficit - (Unaudited) - 6 months ended Jun. 30, 2018 - USD ($) $ in Thousands	Total	Redeemable Noncontrolling Interest [Member]	Class A Common Stock [Member]	Class B Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]
Beginning balance at Dec. 31, 2017	$ (151,047)		$ 97	$ 232	$ 127,682	$ (279,058)
Beginning balance, redeemable convertible preferred units at Dec. 31, 2017		$ 131,440
Beginning balance, shares at Dec. 31, 2017			9,693,254	23,119,246
Net loss	(6,024)	(13,532)				(6,024)
Cumulative effect of accounting change	213					213
Share-based compensation	1,766				1,766
Exchange of Class B Common Stock for Class A Common Stock	151	(151)			151
Exchange of Class B Common Stock for Class A Common Stock, shares			25,025	(25,025)
Issuance of Class A Common Stock to a related party under the 2017 Letter Agreement	5,000		$ 12		4,988
Issuance of Class A Common Stock to a related party under the Letter Agreement, shares			1,141,552
Vesting of restricted stock units, shares			11,667
Change in redemption value of noncontrolling interest	78,344	(78,344)				78,344
Ending balance at Jun. 30, 2018	(71,597)		$ 109	$ 232	$ 134,587	$ (206,525)
Ending balance, redeemable noncontrolling interest at Jun. 30, 2018	$ 39,413	$ 39,413
Ending balance, shares at Jun. 30, 2018			10,871,498	23,094,221

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities:
Net loss before noncontrolling interest	$ (19,556)	$ (27,700)
Adjustments to reconcile net loss before noncontrolling interest to net cash used in operating activities:
(Gain) loss on disposal of property and equipment, net	(12)	5
Depreciation expense	81	104
Share-based compensation expense	1,766	1,698
Change in fair value of warrants, related party	(291)
Amortization of debt discount	547	479
Changes in assets and liabilities:
Accounts receivable	5,730
Prepaid expenses and other assets	(1,920)	(27)
Long-term deposits	2,256	(319)
Accounts payable and accrued expenses	(757)	(679)
Deferred revenue	(2,537)	(21)
Other liabilities	(34)	7
Net cash used in operating activities	(14,727)	(26,453)
Cash flows from investing activities:
Proceeds from sale of assets	12
Purchases of property and equipment		(39)
Net cash provided by (used in) investing activities	12	(39)
Cash flows from financing activities:
Issuance of Class A Common Stock to a related party under the 2017 Letter Agreement	5,000
Proceeds from debt issuance		7,500
Repayment of notes payable	(1,042)
Net cash provided by financing activities	3,958	7,500
Net decrease in cash, cash equivalents and restricted cash and cash equivalents	(10,757)	(18,992)
Total cash, cash equivalents and restricted cash and cash equivalents, beginning of period	14,420	51,505
Total cash, cash equivalents and restricted cash and cash equivalents, end of period	3,663	32,513
Non-cash activities:
Change in redemption value of noncontrolling interest	78,344
Exchange of vTv Therapeutics Inc. Class B Common Stock and vTv Therapeutics, LLC member units for vTv Therapeutics Inc. Class A Common Stock	151
Redeemable Noncontrolling Interest [Member]
Non-cash activities:
Change in redemption value of noncontrolling interest	$ (78,344)	$ 9,147

Description of Business, Basis of Presentation and Going Concern

6 Months Ended

Jun. 30, 2018

Accounting Policies [Abstract]

Description of Business, Basis of Presentation and Going Concern

Note 1:

Description of Business, Basis of Presentation and Going Concern

Description of Business

vTv Therapeutics Inc. (the “Company,” the “Registrant,” “we” or “us”) was incorporated in the state of Delaware in April 2015. The Company was formed to discover and develop orally administered small molecule drug candidates to fill significant unmet medical needs.

Principles of Consolidation

vTv Therapeutics Inc. is a holding company and its principal asset is a controlling equity interest in vTv Therapeutics LLC (“vTv LLC”), the Company’s principal operating subsidiary, which is a clinical-stage biopharmaceutical company engaged in the discovery and development of orally administered small molecule drug candidates to fill significant unmet medical needs.

The Company has determined that vTv LLC is a variable-interest entity (“VIE”) for accounting purposes and that vTv Therapeutics Inc. is the primary beneficiary of vTv LLC because (through its managing member interest in vTv LLC and the fact that the senior management of vTv Therapeutics Inc. is also the senior management of vTv LLC) it has the power and benefits to direct all of the activities of vTv LLC, which include those that most significantly impact vTv LLC’s economic performance. vTv Therapeutics Inc. has therefore consolidated vTv LLC’s results pursuant to Accounting Standards Codification Topic 810, “Consolidation” in its condensed consolidated financial statements. As of June 30, 2018, various holders own non-voting interests in vTv LLC, representing a 68.0% economic interest in vTv LLC, effectively restricting vTv Therapeutics Inc.’s interest to 32.0% of vTv LLC’s economic results, subject to increase in the future, should vTv Therapeutics Inc. purchase additional non-voting common units (“vTv Units”) of vTv LLC, or should the holders of vTv Units decide to exchange such units (together with shares of Class B Common Stock) for shares of Class A Common Stock (or cash) pursuant to the Exchange Agreement (as defined in Note 8). vTv Therapeutics Inc. has provided financial and other support to vTv LLC in the form of its purchase of vTv Units with the net proceeds of the Company’s initial public offering (“IPO”) in 2015 and its agreeing to be a co-borrower under the Venture Loan and Security Agreement (the “Loan Agreement”) with Horizon Technology Finance Corporation and Silicon Valley Bank (together, the “Lenders”) which was entered into in 2016 and its entrance into the letter agreement, dated as of December 5, 2017, with MacAndrews and Forbes Group LLC (the “2017 Letter Agreement”). vTv Therapeutics Inc. will not be required to provide financial or other support for vTv LLC outside of its obligations pertaining to the Loan Agreement as a co-borrower. However, vTv Therapeutics Inc. will control its business and other activities through its managing member interest in vTv LLC, and its management is the management of vTv LLC. The creditors of vTv LLC do not have any recourse to the general credit of vTv Therapeutics Inc. except as allowed under the provisions of the Loan Agreement. Nevertheless, because vTv Therapeutics Inc. will have no material assets other than its interests in vTv LLC, any financial difficulties at vTv LLC could result in vTv Therapeutics Inc. recognizing a loss.

Going Concern and Liquidity

To date, the Company has not generated any product revenue and has not achieved profitable operations. The continuing development of our drug candidates will require additional financing. From its inception through June 30, 2018, the Company has funded its operations primarily through a combination of private placements of common and preferred equity, research collaboration agreements, upfront and milestone payments for license agreements, debt and equity financings and the completion of its IPO in August 2015. As of June 30, 2018, the Company had an accumulated deficit of $206.5 million and has generated net losses in each year of its existence. As of June 30, 2018, the Company’s liquidity sources included cash and cash equivalents of $1.2 million, the $1.7 million upfront payment receivable, net of applicable taxes, under Company’s license agreement with Newsoara Biopharma Co., Ltd., (“Newsoara”) (the “Newsoara License Agreement”) and the remaining funds available under the 2017 Letter Agreement. On July 30, 2018, the Company entered into another letter agreement with MacAndrews and Forbes Group LLC (the “2018 Letter Agreement”) which provides an additional $10.0 million of funding to the Company for its operations. See Note 12 for further details. Management estimates that these sources of funding will allow the Company to continue its operations and activities for a period of less than twelve months from the issuance of these Condensed Consolidated Financial Statements.

Based on the Company’s current operating plan, management believes that the liquidity sources listed above will allow the Company to meet its liquidity requirements through September 2018.

In April 2018, the Company announced that the results from Part A of the STEADFAST Study (“Part A”) did not meet either co-primary efficacy endpoint. Based upon Part A results, the Company discontinued clinical studies involving azeliragon, including the open-label extension study and Part B of the STEADFAST Study (“Part B”). At time of closure of Part B, most subjects had completed 12 months.

In May 2018, the Company announced that based on post hoc analyses of the data from Part A, a subpopulation was identified that showed statistically significant benefit (unadjusted for multiple post hoc comparisons) from azeliragon relative to placebo on ADAS-cog. The identified subpopulation consisted of participants with peak azeliragon blood plasma concentration of less than 7.5 ng/mL and MMSE scores at baseline of 19-27. Based on the subpopulation data analyses from Part A and the prior azeliragon trials, the Company submitted a revised Statistical Analysis Plan (SAP) to the Food and Drug Administration (“FDA”) for Part B that pre-specified a target population for the primary study analysis at 12 months.

In June 2018, the Company announced that the results from Part B did not meet either co-primary efficacy endpoint. However, consistent with the findings in Part A and the Phase 2b trial, lower maximal plasma concentrations of azeliragon in Part B were associated with improvements in efficacy relative to placebo. Relying upon the program’s Fast Track Designation status and study results to date, the Company is pursuing discussions with the Food and Drug Administration (“FDA”) to propose a pathway for further clinical development in support of regulatory approval of azeliragon. On July 31, 2018, the Company submitted a full briefing book to the FDA in support of its request for a Type C meeting. Based upon FDA guidance, the Company expects either to meet with the FDA in person in October 2018 or receive written responses to its questions in September 2018.

Though the Company’s expected cash needs for the foreseeable future have been significantly reduced with the discontinuation of the STEADFAST and open label extension studies, the Company will require additional financing to continue its operations. The Company is seeking possible additional partnering opportunities for its GKA, GLP-1r and other drug candidates which it believes may provide additional cash for use in its operations and the continuation of clinical trials for its drug candidates. The Company is also pursuing other sources of financing to provide flexibility to its operating plan. The timing and availability of such financing is not yet known. The failure of the STEADFAST Study to meet either co-primary endpoint may make it more difficult for the Company to obtain such financing. These conditions raise substantial doubt about the Company’s ability to continue as a going concern.

The Company’s financial statements have been prepared assuming the Company will continue as a going concern, which contemplates, among other things, the realization of assets and satisfaction of liabilities in the normal course of business. The Condensed Consolidated Financial Statements do not include adjustments to reflect the possible future effects on the recoverability and classification of recorded assets or the amounts of liabilities that might be necessary should the Company be unable to continue as a going concern.

Summary of Significant Accounting Policies

6 Months Ended

Jun. 30, 2018

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Note 2:

Summary of Significant Accounting Policies

Unaudited Interim Financial Information

The accompanying financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”). The accompanying Condensed Consolidated Balance Sheet as of June 30, 2018, Condensed Consolidated Statements of Operations for the three and six months ended June 30, 2018 and 2017, Condensed Consolidated Statement of Changes in Redeemable Noncontrolling Interest and Stockholders’ Deficit for the six months ended June 30, 2018 and Condensed Consolidated Statements of Cash Flows for the six months ended June 30, 2018 and 2017 are unaudited. These unaudited financial statements have been prepared in accordance with the rules and regulations of the United States Securities and Exchange Commission (“SEC”) for interim financial information. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. These financial statements should be read in conjunction with the audited financial statements and the accompanying notes for the year ended December 31, 2017 contained in the Company’s Annual Report on Form 10-K. The unaudited interim financial statements have been prepared on the same basis as the annual financial statements and, in the opinion of management, reflect all adjustments (consisting of normal recurring adjustments) necessary to state fairly the Company’s financial position as of June 30, 2018, the results of operations for the three and six months ended June 30, 2018 and 2017 and cash flows for the six months ended June 30, 2018 and 2017. The December 31, 2017 Condensed Consolidated Balance Sheet included herein was derived from the audited financial statements, but does not include all disclosures or notes required by GAAP for complete financial statements.

The financial data and other information disclosed in these notes to the financial statements related to the three and six months ended June 30, 2018 and 2017 are unaudited. Interim results are not necessarily indicative of results for an entire year.

The Company does not have any components of other comprehensive income recorded within its Condensed Consolidated Financial Statements, and, therefore, does not separately present a statement of comprehensive income in its Condensed Consolidated Financial Statements.

Use of Estimates

The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires the Company to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

On an ongoing basis, the Company evaluates its estimates, including those related to the grant date fair value of equity awards, the fair value of warrants to purchase shares of its Class A Common Stock, the fair value of the Class B Common Stock, the useful lives of property and equipment, the fair value of derivative liabilities, and the fair value of the Company’s debt, among others. The Company bases its estimates on historical experience and on various other assumptions that it believes to be reasonable, the results of which form the basis for making judgments about the carrying value of assets and liabilities.

Concentration of Credit Risk

Financial instruments that potentially expose the Company to concentrations of credit risk consist principally of cash on deposit with multiple financial institutions. The balances of these cash accounts frequently exceed insured limits.

The accounts receivable balances outstanding as of June 30, 2018 consisted of milestone payments receivable related to an initial license payment pursuant to the Newsoara License Agreement and the Company’s agreement with JDRF International (“JDRF”). The accounts receivable balance at December 31, 2017 related to an upfront payment received in the first quarter of 2018 pursuant to the Company’s license agreement with Hangzhou Zhongmei Huadong Pharmaceutical Co., Ltd. (“Huadong”).

Three customers represented 100% of the revenue earned during the three and six months ended June 30, 2018. One customer represented 100% of the revenue earned during the three and six months ended June 30, 2017.

Cash and Cash Equivalents

The Company considers any highly liquid investments with an original maturity of three months or less to be cash and cash equivalents.

Restricted Cash and Cash Equivalents

Restricted cash and cash equivalents, current as of December 31, 2017 was $0.2 million. This amount was received through a research, development and commercialization agreement with JDRF (the “JDRF Agreement”). There were no amounts held as restricted cash and cash equivalents as of June 30, 2018 related to this agreement. Restricted cash and cash equivalents, long-term as of June 30, 2018 and December 31, 2017 was $2.5 million at each date. These amounts relate to the minimum balance that the Company must maintain in a deposit account that is pledged to secure the Loan Agreement and is subject to an account control agreement pursuant to the Loan Agreement.

The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the Condensed Consolidated Balance Sheets as of June 30, 2018 and December 31, 2017 that sum to the total of the same such amounts shown in the Condensed Consolidated Statements of Cash Flows (in thousands):

	June 30, 2018		December 31, 2017
Cash and cash equivalents	$	1,163	$	11,758
Restricted cash and cash equivalents		—		162
Restricted cash and cash equivalents, long-term		2,500		2,500
Total cash, cash equivalents and restricted cash and cash equivalents shown in the consolidated statement of cash flows	$	3,663	$	14,420

Investments

In connection with the License Agreement with Reneo Pharmaceuticals, Inc. (“Reneo”) (the “Reneo License Agreement”), the Company received common stock and certain participation rights representing a minority equity interest in Reneo that is classified as a long-term investment in the Company’s Condensed Consolidated Balance Sheets as of June 30, 2018 and December 31, 2017. This investment is accounted for under the cost method because the Company owns less than 20% of the voting equity and does not have the ability to exercise significant influence over Reneo.

On January 1, 2018, the Company adopted ASU No. 2016-01, “Recognition and Measurement of Financial Assets and Financial Liabilities”. This guidance requires equity investments to be measured at fair value with changes in fair value recognized in net income. Since it does not have a readily determinable market value, the Company has elected to measure its investment in Reneo at cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or similar investment.

No adjustments have been made to the value of the Company’s investment in Reneo for the three and six months ended June 30, 2018 either due to impairment or based on observable price changes.

Revenue Recognition

On January 1, 2018, the Company adopted ASC Topic 606, “Revenue From Contracts With Customers” (“ASC Topic 606”), using the modified retrospective method applied to those contracts which were not completed as of the adoption date. Results for reporting periods beginning after January 1, 2018 are presented under ASC Topic 606, while prior period amounts are not adjusted and continue to be reported in accordance with the Company’s historic accounting under ASC Topic 605.

The Company recorded a net reduction to its opening accumulated deficit of $0.2 million as of January 1, 2018 due to the cumulative impact of adopting ASC Topic 606, with the impact primarily related to the recognition of an asset for the incremental costs of obtaining contracts.

The majority of the Company’s revenue results from its license and collaboration agreements associated with the development of investigational drug products. The Company accounts for a contract when it has approval and commitment from both parties, the rights of the parties are identified, payment terms are identified, the contract has commercial substance and collectability of consideration is probable. For each contract meeting these criteria, the Company identifies the performance obligations included within the contract. A performance obligation is a promise in a contract to transfer a distinct good or service to the customer. The Company then recognizes revenue under each contract as the related performance obligations are satisfied.

The transaction price under the contract is determined based on the value of the consideration expected to be received in exchange for the transferred assets or services. Development, regulatory and sales milestones included in the Company’s collaboration agreements are considered to be variable consideration. The amount of variable consideration expected to be received is included in the transaction price when it becomes probable that the milestone will be met. For contracts with multiple performance obligations, the contract’s transaction price is allocated to each performance obligation using the Company’s best estimate of the standalone selling price of each distinct good or service in the contract. The primary method used to estimate standalone selling price is the expected cost plus margin approach. Revenue is recognized over the related period over which the Company expects the services to be provided using a proportional performance model or a straight-line method of recognition if there is no discernable pattern over which the services will be provided.

Research and Development

Major components of research and development costs include cash and share-based compensation, depreciation expense on research and development property and equipment, costs of preclinical studies, clinical trials and related clinical manufacturing, costs of drug development, costs of materials and supplies, facilities costs, overhead costs, regulatory and compliance costs, and fees paid to consultants and other entities that conduct certain research and development activities on the Company’s behalf. Research and development costs are expensed as incurred.

The Company records accruals based on estimates of the services received, efforts expended and amounts owed pursuant to contracts with numerous contract research organizations. In the normal course of business, the Company contracts with third parties to perform various clinical study activities in the ongoing development of potential products. The financial terms of these agreements are subject to negotiation and variation from contract to contract and may result in uneven payment flows. Payments under the contracts depend on factors such as the achievement of certain events and the completion of portions of the clinical study or similar conditions. The objective of the Company’s accrual policy is to match the recording of expenses in its financial statements to the actual services received and efforts expended. As such, expense accruals related to clinical studies are recognized based on the Company’s estimate of the degree of completion of the event or events specified in the specific clinical study.

The Company records nonrefundable advance payments it makes for future research and development activities as prepaid expenses. Prepaid expenses are recognized as expense in the Condensed Consolidated Statements of Operations as the Company receives the related goods or services.

Research and development costs that are reimbursed under a cost-sharing arrangement are reflected as a reduction of research and development expense.

Recently Issued Accounting Pronouncements

Recently Adopted Accounting Pronouncements

In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2014-09, “Revenue From Contracts With Customers”, that outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. The Company adopted this guidance as of January 1, 2018 using the modified retrospective transition method. See Note 2 – “Revenue Recognition” for further details.

In January 2016, the FASB issued ASU No. 2016-01, “Recognition and Measurement of Financial Assets and Financial Liabilities”, which amends ASC 825-10, “Financial Instruments – Overall”. This ASU amends various aspects of the recognition, measurement, presentation and disclosure of financial instruments. This ASU is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The Company adopted this guidance in the first quarter of fiscal 2018. The Company has elected to use the measurement alternative, defined as cost, less impairments, adjusted by observable price changes. The adoption of this guidance did not have a material impact on the Company’s Condensed Consolidated Financial Statements. See Note 2 – “Investments” for further details.

In May 2017, the FASB issued ASU No. 2017-09, “Compensation-Stock Compensation (Topic 718): Scope of Modification Accounting” (“ASU 2017-09”), which clarifies the changes to terms or conditions of a share-based payment award that require an entity to apply modification accounting. ASU 2017-09 is effective for annual reporting periods, and interim periods therein, beginning after December 15, 2017. The Company adopted this guidance in the first quarter of fiscal 2018. The adoption of this guidance did not have a material impact on the Company's Condensed Consolidated Financial Statements.

Recently Issued Accounting Pronouncements Not Yet Adopted

In February 2016, the FASB issued ASU No. 2016-02, “Lease (Topic 842)” (“ASU 2016-02”), which increases transparency and comparability among companies accounting for lease transactions. The most significant change of this update will require the recognition by a lessee of lease assets and liabilities on its balance sheet for operating lease arrangements with lease terms greater than 12 months. This update will require a modified retrospective application which includes a number of optional practical expedients related to the identification and classification of leases commenced before the effective date. This ASU is effective for fiscal years and interim periods within those fiscal years, beginning after December 15, 2018. The adoption of this guidance will result in the recognition of additional assets and liabilities related to the Company’s operating leases within its Condensed Consolidated Balance Sheets.

Collaboration Agreements

6 Months Ended

Jun. 30, 2018

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Collaboration Agreements

Note 3:Collaboration Agreements

Reneo License Agreement

On December 21, 2017, the Company entered into the Reneo License Agreement, under which Reneo obtained an exclusive, worldwide, sublicensable license to develop and commercialize the Company’s peroxisome proliferation activated receptor delta (PPAR-δ) agonist program, including the compound HPP593, for therapeutic, prophylactic or diagnostic application in humans. Under the terms of the Reneo License Agreement, Reneo paid the Company an upfront cash payment of $3.0 million. The Company is eligible to receive additional potential development, regulatory and sales-based milestone payments totaling up to $94.5 million. In addition, Reneo is obligated to pay the Company royalty payments at mid-single to low-double digit rates, based on tiers of annual net sales of licensed products. Such royalties will be payable on a licensed product-by-licensed product and country-by-country basis until the latest of expiration of the licensed patents covering a licensed product in a country, expiration of data exclusivity rights for a licensed product in a country or a specified number of years after the first commercial sale of a licensed product in a country. As additional consideration, the Company has also received common stock and certain participation rights representing a minority equity interest in Reneo.

Pursuant to the terms of the Reneo License Agreement, the Company is required to provide technology transfer services for a defined period after the effective date. In accordance with ASC Topic 606, the Company identified all of the performance obligations at the inception of the Reneo License Agreement. The significant obligations were determined to be the license and the technology transfer services. The Company has determined that the license and technology transfer services represent a single performance obligation because they were not capable of being distinct on their own. The transaction price has been fully allocated to this combined performance obligation. The remaining milestone payments that the Company is eligible to receive have not been included in the transaction price as of June 30, 2018, as it is not considered probable that such payments will be received. The unrecognized amount of the transaction price allocated to this performance obligation as of June 30, 2018 was $3.6 million.

The Company determined that there was no discernable pattern in which the technology services would be provided during the transfer services period. As such, the Company determined that the straight-line method would be used to recognize revenue over the transfer service period. The remainder of this performance obligation will be recognized over approximately 11.5 months. For the three and six months ended June 30, 2018, $0.9 million and $1.8 million of revenue has been recognized related to this combined performance obligation, respectively.

Huadong License Agreement

On December 21, 2017, the Company entered into a License Agreement with Huadong (the “Huadong License Agreement”), under which Huadong obtained an exclusive and sublicensable license to develop and commercialize the Company’s glucagon-like peptide-1 receptor agonist (“GLP-1r”) program, including the compound TTP273, for therapeutic uses in humans or animals, in China and certain other Pacific Rim countries, including Australia and South Korea (collectively, the “Huadong License Territory”). Additionally, under the Huadong License Agreement, the Company obtained a non-exclusive, sublicensable, royalty-free license to develop and commercialize certain Huadong patent rights and know-how related to the Company’s GLP-1r program for therapeutic uses in humans or animals outside of the Huadong License Territory. Under the terms of the Huadong License Agreement, Huadong paid the Company an initial license fee of $8.0 million and is obligated to pay potential development and regulatory milestone payments totaling up to $25.0 million, with an additional potential regulatory milestone of $20.0 million if Huadong receives regulatory approval for a central nervous system indication. In addition, the Company is eligible for an additional $50.0 million in potential sales-based milestones, as well as royalty payments ranging from low-single to low-double digit rates, based on tiered sales of licensed products.

Under the Huadong License Agreement, the Company is also responsible for conducting a Phase 2 multi-region clinical trial (the “Phase 2 MRCT”) including sites in both the United States and Huadong License Territory for the purpose of assessing the safety and efficacy of TTP273 in patients with type 2 diabetes. The Phase 2 MRCT will be designed to satisfy the requirements of the China Food and Drug Administration necessary in order for Huadong to begin a Phase 3 clinical trial in China. The Company will also be responsible for contributing up to $3.0 million in connection with the Phase 2 MRCT.

In accordance with ASC Topic 606, the Company identified all of the performance obligations at the inception of the Huadong License Agreement. The significant performance obligations were determined to be (i) the exclusive license to develop and commercialize the Company’s GLP-1r program, (ii) technology transfer services related to the chemistry and manufacturing know-how for a defined period after the effective date (iii) the obligation to sponsor and conduct the Phase 2 MRCT, (iv) the Company’s obligation to participate on a joint development committee, and (v) other obligations considered to be de minimis in nature.

The transaction price has been allocated to these performance obligations based on their relative standalone selling prices, which were estimated using an expected cost plus margin approach. The remaining milestone payments that the Company is eligible to receive have not been included in the transaction price as of June 30, 2018, as it is not considered probable that such payments will be received.

The Company has determined that the license and technology transfer services related to the chemistry and manufacturing know-how represent a combined performance obligation because they were not capable of being distinct on their own. The unrecognized amount of the transaction price allocated to this performance obligation as of June 30, 2018 was $5.6 million. The Company also determined that there was no discernable pattern in which the technology transfer services would be provided during the transfer service period. As such, the Company determined that the straight-line method would be used to recognize revenue for this performance obligation over the transfer service period. The unrecognized amount of the transaction price allocated to this performance obligation of $4.5 million will be recognized over approximately 11.5 months. For the three and six months ended June 30, 2018, $1.1 million and $2.3 million of revenue has been recognized related to this combined performance obligation, respectively.

The Company also determined that the obligation to sponsor and conduct a portion of the Phase 2 MRCT should be treated as a separate performance obligation. A portion of the total consideration received under the Huadong License Agreement was allocated to this performance obligation based on its estimated standalone selling price. This amount was deferred as of June 30, 2018 and revenue will be recognized using the proportional performance model over the period during which the Company conducts the Phase 2 MRCT trial. No revenue for this performance obligation has been recognized during the three and six months ended June 30, 2018.

The Company also determined that the obligation to participate in the joint development committee (the “JDC”) to oversee the development of products and the Phase 2 MRCT in accordance with the development plan should be treated as a separate performance obligation. A portion of the total consideration received under the Huadong License Agreement was allocated to this performance obligation based on its estimated standalone selling price. This amount was deferred as of June 30, 2018 and revenue will be recognized using the proportional performance model over the period of the Company’s participation on the JDC. No revenue for this performance obligation has been recognized during the three and six months ended June 30, 2018.

Newsoara License Agreement

On May 31, 2018, the Company entered into the Newsoara License Agreement, under which Newsoara obtained an exclusive and sublicensable license to develop and commercialize the Company’s phosphodiesterase type 4 inhibitors (“PDE4”) program, including the compound HPP737, in China, Hong Kong, Macau, Taiwan and other pacific rim countries (collectively, the “Newsoara License Territory”). Additionally, under the Newsoara License Agreement, the Company obtained a non-exclusive, sublicensable, royalty-free license to develop and commercialize certain Newsoara patent rights and know-how related to the Company’s PDE4 program for therapeutic uses in humans outside of the Newsoara License Territory. Under the terms of the Newsoara License Agreement, Newsoara paid the Company an upfront cash payment of $2.0 million. The Company is eligible to receive additional potential development, regulatory and sales-based milestone payments totaling up to $63.0 million. In addition, Newsoara is obligated to pay the Company royalty payments at high-single to low-double digit rates, based on tiers of annual net sales of licensed products. Such royalties will be payable on a licensed product-by-licensed product and country-by-country basis until the latest of expiration of the licensed patents covering a licensed product in a country, expiration of data exclusivity rights for a licensed product in a country or a specified number of years after the first commercial sale of a licensed product in a country.

Pursuant to the terms of the Newsoara License Agreement, the Company is required to provide technology transfer services for a defined period after the effective date. In accordance with ASC Topic 606, the Company identified all of the performance obligations at the inception of the Newsoara License Agreement. The significant obligations were determined to be the license and the technology transfer services. The Company has determined that the license and technology transfer services represent a single performance obligation because they were not capable of being distinct on their own. The transaction price has been fully allocated to this combined performance obligation. The remaining milestone payments that the Company is eligible to receive have not been included in the transaction price as of June 30, 2018, as it is not considered probable that such payments will be received. The unrecognized amount of the transaction price allocated to this performance obligation as of June 30, 2018 was $1.6 million.

The Company determined that there was no discernable pattern in which the technology services would be provided during the transfer services period. As such, the Company determined that the straight-line method would be used to recognize revenue over the transfer service period. The remainder of this performance obligation will be recognized over approximately 3.5 months. For each of the three and six months ended June 30, 2018, $0.4 million of revenue has been recognized related to this combined performance obligation.

JDRF Agreement

In August 2017, the Company entered into the JDRF Agreement to support the funding of the Simplici-T1 Study, an adaptive Phase 1b/2 study to explore the effects of TTP399 in type 1 diabetics. The Company initiated the Phase 2 portion of this study in the second quarter of 2018. According to the terms of the JDRF Agreement, JDRF will provide research funding of up to $3.0 million based on the achievement of research and development milestones, with the total funding provided by JDRF not to exceed approximately one-half of the total cost of the project. Additionally, the Company has the obligation to make certain milestone payments to JDRF upon the commercialization, licensing, sale or transfer of TTP399 as a treatment for type 1 diabetes.

Payments that the Company receives from JDRF under this agreement will be recorded as restricted cash and current liabilities and recognized as an offset to research and development expense, based on the progress of the project, and only to the extent that the restricted cash is utilized to fund such development activities. As of June 30, 2018, the Company had received funding under this agreement of $0.5 million, with an additional $0.3 million receivable at June 30, 2018. Research and development costs were offset by a total of $0.5 million over the course of this agreement. As of June 30, 2018, the Company has recognized restricted cash of an immaterial amount related to this agreement.

Contract Liabilities

Contract liabilities related to the Company’s collaboration agreements consisted of the following (in thousands):

	June 30, 2018		December 31, 2017		Change
Deferred revenue	$	10,114	$	8,757	$	1,357
Deferred revenue - net of current portion		603		4,497		(3,894	)
Total contract liabilities	$	10,717	$	13,254	$	(2,537	)

The change in our contract liabilities for the six months ended June 30, 2018 was due to the recognition of revenue based on the estimated performance of services under the related collaboration agreements as well as the recognition of deferred revenue related to the Company’s Newsoara License Agreement. There were no changes in the estimated transaction prices for the related contracts during the three and six months ended June 30, 2018.

Share-Based Compensation

6 Months Ended

Jun. 30, 2018

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Share-Based Compensation

Note 4:

Share-Based Compensation

During the three and six months ended June 30, 2018, the Company issued non-qualified stock option awards to certain employees of the Company. These option awards vest ratably over a three-year period and the option awards expire after a term of ten years from the date of grant. As of June 30, 2018, the Company had total unrecognized stock-based compensation expense for its outstanding stock option awards of approximately $2.2 million, which is expected to be recognized over a weighted average period of 1.6 years. The weighted average grant date fair value of option grants during the six months ended June 30, 2018 and 2017 was $2.30 and $3.80 per option, respectively. The aggregate intrinsic value of the in-the-money awards outstanding at June 30, 2018 was $0.

The Company uses the Black-Scholes option pricing model to calculate the fair value of stock options granted. The fair value of stock options granted was estimated using the following assumptions:

	For the Six Months Ended June 30,
	2018	2017
Expected volatility	71.15% - 99.23%	84.22% - 85.93%
Expected life of option, in years	5.7 - 6.0	5.8 - 6.0
Risk-free interest rate	2.69% - 2.81%	1.94% - 2.24%
Expected dividend yield	0.00%	0.00%

The following table summarizes the activity related to the stock option awards for the six months ended June 30, 2018:

	Number of Shares			Weighted- Average Exercise Price
Awards outstanding at December 31, 2017		1,960,732		$	8.50
Granted		101,250			3.29
Forfeited		(135,057	)		6.04
Awards outstanding at June 30, 2018		1,926,925		$	8.40
Options exercisable at June 30, 2018		1,033,730		$	9.34
Weighted average remaining contractual term	7.7 Years
Options vested and expected to vest at June 30, 2018		1,893,488		$	8.45
Weighted average remaining contractual term	8.0 Years

The following table summarizes the activity related to the RSU awards for the six months ended June 30, 2018:

	Number of Shares			Weighted- Average Grant Date Fair Value
Awards outstanding at December 31, 2017		35,000		$	5.81
Vested		(11,667	)		5.81
Awards outstanding at June 30, 2018		23,333		$	5.81
RSUs expected to vest at June 30, 2018		22,779		$	5.81

As of June 30, 2018, the Company had total unrecognized stock-based compensation expense for its outstanding RSU awards of approximately $0.1 million, which is expected to be recognized over a weighted-average period of 1.7 years. The aggregate intrinsic value of the RSUs outstanding at June 30, 2018 was de minimis.

Compensation expense related to the grants of stock options and RSUs is included in research and development and general and administrative expense as follows (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
Research and development	$	225	$	395	$	624	$	672
General and administrative		578		564		1,142		1,026
Total share-based compensation expense	$	803	$	959	$	1,766	$	1,698

Notes Payable

6 Months Ended

Jun. 30, 2018

Debt Disclosure [Abstract]

Notes Payable

Note 5:Notes Payable

Notes payable consist of the following (in thousands):

	June 30, 2018			December 31, 2017
Notes payable under the Loan Agreement	$	18,958		$	20,000
Accreted final payment (unamortized debt discount)		134			(413	)
Total notes payable		19,092			19,587
Less: Current portion		(8,229	)		(4,271	)
Total notes payable, net of current portion	$	10,863		$	15,316

In October 2016, the Company entered into the Loan Agreement with Horizon Technology Finance Corporation and Silicon Valley Bank, under which the Company and vTv LLC borrowed $20.0 million.

Each loan tranche bears interest at a floating rate equal to 10.5% plus the amount by which the one-month London Interbank Offer Rate (“LIBOR”) exceeds 0.5%.

The Company borrowed the first tranche of $12.5 million upon close of the Loan Agreement in October 2016. The first tranche requires only monthly interest payments until May 1, 2018 followed by equal monthly payments of principal plus accrued interest through the scheduled maturity date on May 1, 2020. In addition, a final payment for the first tranche loan equal to $0.8 million will be due on May 1, 2020, or such earlier date specified in the Loan Agreement. The Company borrowed the second tranche of $7.5 million in March 2017. The second tranche requires only monthly interest payments until October 1, 2018 followed by equal monthly payments of principal plus accrued interest through the scheduled maturity date on October 1, 2020. In addition, a final payment for the second tranche loan equal to $0.5 million will be due on October 1, 2020, or such earlier date specified in the Loan Agreement. The availability of the third tranche of $5.0 million expired unused on June 30, 2017.

If the Company repays all or a portion of the loan prior to the applicable maturity date, it will pay the Lenders a prepayment penalty fee, based on a percentage of the then outstanding principal balance equal to 4.0% during the first 18 months following the funding of the second tranche and 2.0% thereafter.

The Company’s obligations under the Loan Agreement are secured by a first priority security interest in substantially all of its assets. As a result of the termination of the STEADFAST Study, the Company granted the Lenders a first priority security interest in all of the Company’s intellectual property, subject to certain limited exceptions. The Company has agreed not to pledge or otherwise encumber its intellectual property assets, subject to certain exceptions.

The Loan Agreement includes customary affirmative and restrictive covenants, including, but not limited to, restrictions on the payment of dividends or other equity distributions and the incurrence of debt or liens upon the assets of the Company or its subsidiaries. The Loan Agreement does not contain any financial maintenance covenants other than a requirement to maintain a minimum cash balance of not less than $2.5 million in a deposit account pledged to secure the Loan Agreement and subject to an account control agreement. The minimum cash balance covenant was included as part of an amendment to the Loan Agreement in connection with our entry into the Huadong License Agreement in December 2017. The Loan Agreement includes customary events of default, including payment defaults, covenant defaults, and material adverse change default. Upon the occurrence of an event of default and following any applicable cure periods, a default interest rate of an additional 5.0% will be applied to the outstanding loan balances, and the Lenders may declare all outstanding obligations immediately due and payable and take such other actions as set forth in the Loan Agreement.

In connection with the Loan Agreement, the Company issued to the Lenders warrants to purchase shares of the Company’s Class A Common Stock (the “Warrants”). On October 28, 2016, the Company issued Warrants to purchase 152,580 shares of its Class A Common Stock at a per share exercise price of $6.39 per share, which aggregate exercise price represents 6.0% of the principal amount borrowed under the first tranche of the Loan Agreement and 3.0% of the amount available under the second tranche of the Loan Agreement. On March 24, 2017, in connection with the funding of the second tranche, the Company issued Warrants to purchase 38,006 shares of its Class A Common Stock at a per share exercise price of $5.92 per share, which aggregate exercise price represents 3.0% of the principal amount of the second tranche of the Loan Agreement. In each instance, the Warrants have an exercise price equal to the lower of (a) the volume weighted average price per share of the Company’s Class A Common Stock, as reported on the principal stock exchange on which the Company’s Class A Common Stock is listed, for 10 trading days prior to the issuance of the applicable Warrants or (b) the closing price of a share of the Company’s Class A Common Stock on the trading day prior to the issuance of the applicable Warrants. The Warrants will expire seven years from their date of issuance.

The Company incurred $0.7 million of costs in connection with the Loan Agreement in the year ended December 31, 2016. These costs, along with the allocated fair value of the Warrants issued of $0.9 million were treated as a debt discount, and are offset against the carrying value of the notes payable in the Company’s Condensed Consolidated Balance Sheet as of June 30, 2018 and December 31, 2017. These costs will be recognized as interest expense over the term of the first tranche using the effective interest method. The final payments for the first and second loan tranches of $0.8 million and $0.5 million, respectively, will be accrued as additional interest expense, using the effective interest method, over the term of the relevant tranche.

Commitments and Contingencies

6 Months Ended

Jun. 30, 2018

Commitments And Contingencies Disclosure [Abstract]

Commitments and Contingencies

Note 6:

Commitments and Contingencies

Legal Matters

From time to time, the Company is involved in various legal proceedings arising in the normal course of business. If a specific contingent liability is determined to be probable and can be reasonably estimated, the Company accrues and discloses the amount. The Company is not currently a party to any material legal proceedings.

Columbia University Agreement

In May 2015, the Company entered into a worldwide exclusive agreement with Columbia University (“Columbia”) to license certain intellectual property from Columbia. Under the agreement, the Company is obligated to pay to Columbia (1) an annual fee of $0.1 million from 2015 through 2021, (2) a potential regulatory milestone payment of $0.8 million and (3) potential royalty payments at a single digit royalty rate based on net sales of licensed products as defined in the agreement.

Novo Nordisk

In February 2007, the Company entered into an Agreement Concerning Glucokinase Activator Project with Novo Nordisk A/S (the “Novo License Agreement”) whereby we obtained an exclusive, worldwide, sublicensable license under certain Novo Nordisk intellectual property rights to discover, develop, manufacture, have manufactured, use and commercialize products for the prevention, treatment, control, mitigation or palliation of human or animal diseases or conditions. As part of this license grant, the Company obtained certain worldwide rights to Novo Nordisk’s GKA program, including rights to preclinical and clinical compounds such as TTP399. Under the terms of the Novo License Agreement, the Company has additional potential developmental and regulatory milestone payments totaling up to $115.0 million for approval of a product. The Company may also be obligated to pay an additional $75.0 million in potential sales-based milestones, as well as royalty payments, at mid-single digit royalty rates, based on tiered sales of commercialized licensed products.

Huadong License Agreement

Under the terms of the Huadong License Agreement, vTv LLC is responsible for sponsoring the Phase 2 MRCT including sites in both the US and the Huadong License Territory for the purpose of assessing the safety and efficacy of TTP273 in patients with type 2 diabetes. The Phase 2 MRCT will be designed to satisfy the requirements of the China Food and Drug Administration necessary in order for Huadong to begin a Phase 3 clinical trial in China. vTv LLC will be responsible for contributing up to $3.0 million in connection with the Phase 2 MRCT.

Redeemable Noncontrolling Interest

6 Months Ended

Jun. 30, 2018

Noncontrolling Interest [Abstract]

Redeemable Noncontrolling Interest

Note 7:

Redeemable Noncontrolling Interest

The Company is subject to the Exchange Agreement with respect to the vTv Units representing the 68.0% noncontrolling interest in vTv LLC outstanding as of June 30, 2018 (see Note 8). The Exchange Agreement requires the surrender of an equal number of vTv Units and Class B Common Stock for (i) shares of Class A Common Stock on a one-for-one basis or (ii) cash (based on the fair market value of the Class A Common Stock as determined pursuant to the Exchange Agreement), at the Company’s option (as the managing member of vTv LLC), subject to customary conversion rate adjustments for stock splits, stock dividends and reclassifications. The exchange value is determined based on a 20-day volume weighted average price of the Class A Common Stock as defined in the Exchange Agreement, subject to customary conversion rate adjustments for stock splits, stock dividends and reclassifications.

The redeemable noncontrolling interest is recognized at the higher of (1) its initial fair value plus accumulated earnings/losses associated with the noncontrolling interest or (2) the redemption value as of the balance sheet date. At June 30, 2018 and December 31, 2017, the redeemable noncontrolling interest was recorded based on the redemption value as of the balance sheet date of $39.4 million and $131.4 million, respectively.

Related-Party Transactions

6 Months Ended

Jun. 30, 2018

Related-Party Transactions

Note 8:

Related-Party Transactions

MacAndrews & Forbes Incorporated

As of June 30, 2018, subsidiaries and affiliates of MacAndrews & Forbes Incorporated (collectively “MacAndrews”) indirectly controlled 23,084,267 shares of the Company’s Class B Common Stock and 3,757,218 shares of the Company’s Class A Common Stock. As a result, MacAndrews’ holdings represent approximately 79.0% of the combined voting power of the Company’s outstanding common stock.

The Company has entered into several agreements with MacAndrews or its affiliates as further detailed below:

Equity Financing

In December 2017, the Company entered into the 2017 Letter Agreement with MacAndrews. Under the 2017 Letter Agreement, until December 5, 2018, the Company has the right to sell to MacAndrews shares of its Class A Common Stock at a price equal to $4.38 per share, and MacAndrews has the right (exercisable up to three times) to require the Company to sell to it shares of Class A Common Stock at the same price. An aggregate of $10.0 million worth of Class A Common Stock may be sold under the 2017 Letter Agreement (whether at the Company’s or MacAndrews’ option). In addition, in connection with the 2017 Letter Agreement, the Company also issued MacAndrews warrants (the “Consideration Warrants”) to purchase 198,267 shares of the Company’s Class A Common Stock at a price of $5.04 per share, exercisable until December 5, 2024. As of June 30, 2018, the Company has received funding of $5.0 million under the 2017 Letter Agreement and, in exchange, has issued a total of 1,141,552 shares of its Class A Common Stock. See Note 12 for further information regarding funding under the 2017 Letter Agreement occurring after June 30, 2018.

Exchange Agreement

The Company and MacAndrews are party to an exchange agreement (the “Exchange Agreement”) pursuant to which the vTv Units (along with a corresponding number of shares of the Class B Common Stock) are exchangeable for (i) shares of the Company’s Class A Common Stock on a one-for-one basis or (ii) cash (based on the fair market value of the Class A Common Stock as determined pursuant to the Exchange Agreement), at the Company’s option (as the managing member of vTv LLC), subject to customary conversion rate adjustments for stock splits, stock dividends and reclassifications. Any decision to require an exchange for cash rather than shares of Class A Common Stock will ultimately be determined by the entire board of directors of vTv Therapeutics Inc. (the “Board of Directors”). As of June 30, 2018, MacAndrews had not exchanged any shares under the provisions of this agreement.

Tax Receivable Agreement

The Company and MacAndrews are party to a tax receivable agreement (the “Tax Receivable Agreement”), which provides for the payment by the Company to M&F TTP Holdings Two LLC (“M&F”), as successor in interest to vTv Therapeutics Holdings, LLC (“vTv Therapeutics Holdings”), and M&F TTP Holdings LLC (or certain of its transferees or other assignees) of 85% of the amount of cash savings, if any, in U.S. federal, state and local income tax or franchise tax that the Company actually realizes (or, in some circumstances, the Company is deemed to realize) as a result of (a) the exchange of Class B Common Stock, together with the corresponding number of vTv Units, for shares of the Company’s Class A Common Stock (or for cash), (b) tax benefits related to imputed interest deemed to be paid by the Company as a result of the Tax Receivable Agreement and (c) certain tax benefits attributable to payments under the Tax Receivable Agreement.

As no shares have been exchanged by MacAndrews pursuant to the Exchange Agreement (discussed above), the Company has not recognized any liability nor has it made any payments pursuant to the Tax Receivable Agreement as of June 30, 2018.

Investor Rights Agreement

The Company is party to an investor rights agreement with M&F, as successor in interest to vTv Therapeutics Holdings (the “Investor Rights Agreement”). The Investor Rights Agreement provides M&F with certain demand, shelf and piggyback registration rights with respect to its shares of Class A Common Stock and also provides M&F with certain governance rights, depending on the size of its holdings of Class A Common Stock. Under the Investor Rights Agreement, M&F was initially entitled to nominate a majority of the members of the Board of Directors and designate the members of the committees of the Board of Directors.

Income Taxes

6 Months Ended

Jun. 30, 2018

Income Tax Disclosure [Abstract]

Income Taxes

Note 9:

Income Taxes

The Company is subject to U.S. federal income taxes as well as state taxes. The Company recorded an income tax provision of $0.2 million for the three and six months ended June 30, 2018 representing foreign withholding taxes incurred in connection with the Newsoara License Agreement. The Company did not record an income tax provision for the three and six months ended June 30, 2017. Management has evaluated the positive and negative evidence surrounding the realization of its deferred tax assets, including the Company’s history of losses, and under the applicable accounting standards determined that it is more-likely-than-not that the deferred tax assets will not be realized. The difference between the effective tax rate of the Company and the U.S. statutory tax rate of 21% at June 30, 2018 is due to the valuation allowance against the Company’s expected net operating losses.

As discussed in Note 8, the Company is party to a tax receivable agreement with a related party which provides for the payment by the Company to M&F (or certain of its transferees or other assignees) of 85% of the amount of cash savings, if any, in U.S. federal, state and local income tax or franchise tax that the Company actually realizes (or, in some circumstances, the Company is deemed to realize) as a result of certain transactions. As no transactions have occurred which would trigger a liability under this agreement, the Company has not recognized any liability related to this agreement as of June 30, 2018.

On December 22, 2017, the U.S. federal government enacted comprehensive tax reform commonly referred to as the Tax Cuts and Jobs Act (“TCJA”). Under ASC Topic 740, the effects of changes in tax rates and laws are recognized in the period which the new legislation is enacted. Among other things, the TCJA (1) reduces the U.S federal statutory corporate income tax rate from 35% to 21% effective January 1, 2018, (2) eliminates the corporate alternative minimum tax, (3) eliminates the Section 199 deduction, and (4) changes rules related to uses and limitations of net operating loss carryforwards beginning after December 31, 2017.

The SEC staff issued Staff Accounting Bulletin No. 118 (“SAB 118”), which provides guidance on accounting for the tax effects of TCJA. SAB 118 provides a measurement period that should not extend beyond one year from the TCJA enactment date for companies to complete the accounting under ASC Topic 740. To the extent that a company’s accounting for certain income tax effects of the TCJA is incomplete but is able to determine a reasonable estimate, it must record a provisional estimate in the financial statements.

The TCJA reduces the corporate tax rate to 21% effective January 1, 2018. While we are able to make a reasonable estimate of the impact of the reduction in the corporate rate, it may be affected by other analyses related to the TCJA. The Company will continue to assess and refine, as necessary, its accounting for the TCJA as additional guidance and interpretation is provided.

Net Loss per Share

6 Months Ended

Jun. 30, 2018

Earnings Per Share [Abstract]

Net Loss per Share

Note 10:

Net Loss per Share

Basic loss per share is computed by dividing net loss attributable to vTv Therapeutics Inc. by the weighted-average number of shares of Class A Common Stock outstanding during the period. Diluted loss per share is computed giving effect to all potentially dilutive shares. Diluted loss per share for all periods presented is the same as basic loss per share as the inclusion of potentially issuable shares would be antidilutive.

A reconciliation of the numerator and denominator used in the calculation of basic and diluted net loss per share of Class A Common Stock is as follows (in thousands, except share and per share amounts):

	For the Three Months Ended June 30,						For the Six Months Ended June 30,
	2018			2017			2018			2017
Numerator:
Net loss	$	(9,596	)	$	(13,414	)	$	(19,556	)	$	(27,700	)
Less: Net loss attributable to noncontrolling interests		(6,524	)		(9,451	)		(13,532	)		(19,517	)
Net loss attributable to vTv Therapeutics Inc., basic and diluted	$	(3,072	)	$	(3,963	)	$	(6,024	)	$	(8,183	)
Denominator:
Weighted-average vTv Therapeutics Inc. Class A Common Stock, basic and diluted		10,049,831			9,693,254			9,875,743			9,693,254
Net loss per share of vTv Therapeutics Inc. Class A Common Stock, basic and diluted	$	(0.31	)	$	(0.41	)	$	(0.61	)	$	(0.84	)

Potentially dilutive securities not included in the calculation of diluted net loss per share are as follows:

	June 30, 2018		June 30, 2017
Class B Common Stock ⁽¹⁾		23,094,221		23,119,246
Common stock options granted under the Plan		1,926,925		1,926,434
Restricted stock units		23,334		35,000
Common stock options granted under 2017 Letter Agreement		1,141,553		—
Common stock warrants		388,853		190,586
Total		26,574,886		25,271,266

(1)

Shares of Class B Common Stock do not share in the Company’s earnings and are not participating securities. Accordingly, separate presentation of loss per share of Class B Common Stock under the two-class method has not been provided. Each share of Class B Common Stock (together with a corresponding vTv Unit) is exchangeable for one share of Class A Common Stock.

Fair Value of Financial Instruments

6 Months Ended

Jun. 30, 2018

Fair Value Disclosures [Abstract]

Fair Value of Financial Instruments

Note 11:Fair Value of Financial Instruments

The carrying amount of certain of the Company’s financial instruments, including cash and cash equivalents, net accounts receivable, accounts payable and other accrued liabilities approximate fair value due to their short-term nature.

The fair value of the Company’s notes payable is considered to approximate its carrying value because it bears interest at a variable interest rate.

The Company measures the value of its investment in Reneo at cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or similar investment. During the three and six months ended June 30, 2018, there were no observable price changes in identical or similar investments, nor were there any indications of impairment. As such, the value of the Company’s investment in Reneo was not remeasured.

Assets and Liabilities Measured at Fair Value on a Recurring Basis

The Company evaluates its financial assets and liabilities subject to fair value measurements on a recurring basis to determine the appropriate level in which to classify them for each reporting period. This determination requires significant judgments. The following table summarizes the conclusions reached regarding fair value measurements as of June 30, 2018 and December 31, 2017 (in thousands):

Balance at June 30, 2018

Quoted Prices in Active Markets for Identical Assets

(Level 1)

Significant Other Observable Inputs

(Level 2)

Significant Unobservable Inputs

(Level 3)

Warrant liability, related party ⁽¹⁾

201

—

201

Total

201

—

201

Balance at December 31, 2017

Quoted Prices in Active Markets for Identical Assets

(Level 1)

Significant Other Observable Inputs

(Level 2)

Significant Unobservable Inputs

(Level 3)

Warrant liability, related party ⁽¹⁾

492

—

492

Total

492

—

492

(1)

Fair value determined using an option pricing model based on the Company’s current capitalization. Expected volatility is based on a portfolio of selected stocks of companies believed to have market and economic characteristics similar to its own. The risk-free rate is based on the yield of U.S. government securities with the same term as the option as of the valuation date.

	Changes in Level 3 instruments for the six months ended June 30, 2018
	Balance at January 1		Net Change in fair value included in earnings			Purchases / Issuance		Sales / Repurchases			Balance at June 30,
2018
Warrant liability, related party		492		(291	)		—		—			201
Total	$	492	$	(291	)	$	—	$	—		$	201

2017
Warrant liability	$	167	$	—		$	—	$	(167	)	$	—
Total	$	167	$	—		$	—	$	(167	)	$	—

The fair value of the Consideration Warrants was determined using the Black Scholes option pricing model. During the three and six months ended June 30, 2018, the Company recognized a gain of $0.3 million related to the change in fair value of the Consideration Warrants. This gain was recognized as a component of other income – related party in the Condensed Consolidated Statements of Operations. Expected volatility is based on a portfolio of selected stocks of companies believed to have market and economic characteristics similar to its own. The risk-free rate is based on the yield of U.S. government securities with the same term as the option as of the valuation date. Significant inputs utilized in the valuation of the Consideration Warrants as of June 30, 2018 were:

Annual volatility			97.04		%
Annual risk-free rate			2.79		%

Changes in the unobservable inputs noted above would impact the amount of the liability for the Consideration Warrants. Increases (decreases) in the estimates of the Company’s annual volatility would increase (decrease) the liability and an increase (decrease) in the annual risk-free rate would increase (decrease) the liability.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Subsequent Events	6 Months Ended
Subsequent Events	Jun. 30, 2018
Subsequent Events [Abstract]
Subsequent Events	Note 12:Subsequent Events On July 6, 2018, the Company caused MacAndrews to purchase an additional 570,776 shares of its Class A Common Stock under the terms of the 2017 Letter Agreement for $2.5 million in cash. On July 30, 2018, the Company entered into the 2018 Letter Agreement with MacAndrews and Forbes Group LLC. Under the 2018 Letter Agreement, until July 30, 2019, the Company has the right to sell to MacAndrews shares of its Class A Common Stock at a price equal to $1.33 per share, and MacAndrews has the right (exercisable up to three times) to require the Company to sell to it shares of Class A Common Stock at the same price. An aggregate of $10.0 million worth of Class A Common Stock may be sold under the 2018 Letter Agreement (whether at the Company’s or MacAndrews’ option). In addition, in connection with the 2018 Letter Agreement, the Company also issued MacAndrews warrants to purchase 518,654 shares of the Company’s Class A Common Stock at a price of $1.53 per share, exercisable until July 30, 2025.

Summary of Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2018

Accounting Policies [Abstract]

Unaudited Interim Financial Information

Use of Estimates

Concentration of Credit Risk

Cash and Cash Equivalents

The Company considers any highly liquid investments with an original maturity of three months or less to be cash and cash equivalents.

Restricted Cash and Cash Equivalents

	June 30, 2018		December 31, 2017
Cash and cash equivalents	$	1,163	$	11,758
Restricted cash and cash equivalents		—		162
Restricted cash and cash equivalents, long-term		2,500		2,500
Total cash, cash equivalents and restricted cash and cash equivalents shown in the consolidated statement of cash flows	$	3,663	$	14,420

Investments

No adjustments have been made to the value of the Company’s investment in Reneo for the three and six months ended June 30, 2018 either due to impairment or based on observable price changes.

Revenue Recognition

Research and Development

Research and development costs that are reimbursed under a cost-sharing arrangement are reflected as a reduction of research and development expense.

Recently Issued Accounting Pronouncements

Recently Adopted Accounting Pronouncements

Recently Issued Accounting Pronouncements Not Yet Adopted

Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2018

Accounting Policies [Abstract]

Schedule of Reconciliation of Cash, Cash Equivalents, and Restricted Cash

	June 30, 2018		December 31, 2017
Cash and cash equivalents	$	1,163	$	11,758
Restricted cash and cash equivalents		—		162
Restricted cash and cash equivalents, long-term		2,500		2,500
Total cash, cash equivalents and restricted cash and cash equivalents shown in the consolidated statement of cash flows	$	3,663	$	14,420

Collaboration Agreements (Tables)

6 Months Ended

Jun. 30, 2018

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Summary of Contract Liabilities Related to Company's Collaboration Agreements

Contract liabilities related to the Company’s collaboration agreements consisted of the following (in thousands):

	June 30, 2018		December 31, 2017		Change
Deferred revenue	$	10,114	$	8,757	$	1,357
Deferred revenue - net of current portion		603		4,497		(3,894	)
Total contract liabilities	$	10,717	$	13,254	$	(2,537	)

Share-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2018

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Assumptions Used to Estimate Fair Value of Stock Option Awards Granted

The Company uses the Black-Scholes option pricing model to calculate the fair value of stock options granted. The fair value of stock options granted was estimated using the following assumptions:

	For the Six Months Ended June 30,
	2018	2017
Expected volatility	71.15% - 99.23%	84.22% - 85.93%
Expected life of option, in years	5.7 - 6.0	5.8 - 6.0
Risk-free interest rate	2.69% - 2.81%	1.94% - 2.24%
Expected dividend yield	0.00%	0.00%

Summary of Stock Award Activity for the Period

The following table summarizes the activity related to the stock option awards for the six months ended June 30, 2018:

	Number of Shares			Weighted- Average Exercise Price
Awards outstanding at December 31, 2017		1,960,732		$	8.50
Granted		101,250			3.29
Forfeited		(135,057	)		6.04
Awards outstanding at June 30, 2018		1,926,925		$	8.40
Options exercisable at June 30, 2018		1,033,730		$	9.34
Weighted average remaining contractual term	7.7 Years
Options vested and expected to vest at June 30, 2018		1,893,488		$	8.45
Weighted average remaining contractual term	8.0 Years

Summary of Activity Related to RSU Awards

The following table summarizes the activity related to the RSU awards for the six months ended June 30, 2018:

	Number of Shares			Weighted- Average Grant Date Fair Value
Awards outstanding at December 31, 2017		35,000		$	5.81
Vested		(11,667	)		5.81
Awards outstanding at June 30, 2018		23,333		$	5.81
RSUs expected to vest at June 30, 2018		22,779		$	5.81

Summary of Compensation Expense Related to Grants of Stock Options and RSUs

Compensation expense related to the grants of stock options and RSUs is included in research and development and general and administrative expense as follows (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
Research and development	$	225	$	395	$	624	$	672
General and administrative		578		564		1,142		1,026
Total share-based compensation expense	$	803	$	959	$	1,766	$	1,698

Notes Payable (Tables)

6 Months Ended

Jun. 30, 2018

Debt Disclosure [Abstract]

Schedule of Notes Payable

Notes payable consist of the following (in thousands):

	June 30, 2018			December 31, 2017
Notes payable under the Loan Agreement	$	18,958		$	20,000
Accreted final payment (unamortized debt discount)		134			(413	)
Total notes payable		19,092			19,587
Less: Current portion		(8,229	)		(4,271	)
Total notes payable, net of current portion	$	10,863		$	15,316

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28541-108399

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21506-112644

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(e),(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21521-112644

Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21538-112644

Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644

+ Details

Net Loss per Share (Tables)

6 Months Ended

Jun. 30, 2018

Earnings Per Share [Abstract]

Reconciliation of the Numerator and Denominator Used in the Calculation of Basic and Diluted Net Loss per Share of Class A Common Stock

	For the Three Months Ended June 30,						For the Six Months Ended June 30,
	2018			2017			2018			2017
Numerator:
Net loss	$	(9,596	)	$	(13,414	)	$	(19,556	)	$	(27,700	)
Less: Net loss attributable to noncontrolling interests		(6,524	)		(9,451	)		(13,532	)		(19,517	)
Net loss attributable to vTv Therapeutics Inc., basic and diluted	$	(3,072	)	$	(3,963	)	$	(6,024	)	$	(8,183	)
Denominator:
Weighted-average vTv Therapeutics Inc. Class A Common Stock, basic and diluted		10,049,831			9,693,254			9,875,743			9,693,254
Net loss per share of vTv Therapeutics Inc. Class A Common Stock, basic and diluted	$	(0.31	)	$	(0.41	)	$	(0.61	)	$	(0.84	)

Schedule of Potentially Dilutive Securities Not Included in Calculation of Diluted Net Loss per Share

Potentially dilutive securities not included in the calculation of diluted net loss per share are as follows:

	June 30, 2018		June 30, 2017
Class B Common Stock ⁽¹⁾		23,094,221		23,119,246
Common stock options granted under the Plan		1,926,925		1,926,434
Restricted stock units		23,334		35,000
Common stock options granted under 2017 Letter Agreement		1,141,553		—
Common stock warrants		388,853		190,586
Total		26,574,886		25,271,266

(1)

Fair Value of Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2018

Fair Value Disclosures [Abstract]

Summarizes the Conclusions Reached Regarding Fair Value Measurements

The following table summarizes the conclusions reached regarding fair value measurements as of June 30, 2018 and December 31, 2017 (in thousands):

Balance at June 30, 2018

Quoted Prices in Active Markets for Identical Assets

(Level 1)

Significant Other Observable Inputs

(Level 2)

Significant Unobservable Inputs

(Level 3)

Warrant liability, related party ⁽¹⁾

201

—

201

Total

201

—

201

Balance at December 31, 2017

Quoted Prices in Active Markets for Identical Assets

(Level 1)

Significant Other Observable Inputs

(Level 2)

Significant Unobservable Inputs

(Level 3)

Warrant liability, related party ⁽¹⁾

492

—

492

Total

492

—

492

(1)

	Changes in Level 3 instruments for the six months ended June 30, 2018
	Balance at January 1		Net Change in fair value included in earnings			Purchases / Issuance		Sales / Repurchases			Balance at June 30,
2018
Warrant liability, related party		492		(291	)		—		—			201
Total	$	492	$	(291	)	$	—	$	—		$	201

2017
Warrant liability	$	167	$	—		$	—	$	(167	)	$	—
Total	$	167	$	—		$	—	$	(167	)	$	—

Summary of Significant Inputs Utilized in the Valuation of Warrants

Significant inputs utilized in the valuation of the Consideration Warrants as of June 30, 2018 were:

Annual volatility			97.04		%
Annual risk-free rate			2.79		%

Description of Business, Basis of Presentation and Going Concern - Additional Information (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jul. 30, 2018	Dec. 31, 2017
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Accumulated deficit	$ (206,525)		$ (279,058)
Cash and cash equivalents	$ 1,163		$ 11,758
2018 Letter Agreement [Member] \| MacAndrews and Forbes Group LLC [Member] \| Subsequent Event [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Additional funding receivable		$ 10,000
vTv Therapeutics LLC [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Percentage of non-voting economic interest of vTv Therapeutics Holdings LLC in vTv LLC	68.00%
Percentage of non-voting economic interest of vTv Therapeutics Inc in vTv LLC	32.00%
Newsoara Biopharma Co., Ltd. [Member] \| Collaborative Arrangements [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Upfront payment receivable, net of tax	$ 1,700

Summary of Significant Accounting Policies - Additional Information (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2018 USD ($) Customer	Jun. 30, 2017 Customer	Jun. 30, 2018 USD ($) Customer	Jun. 30, 2017 Customer	Jan. 01, 2018 USD ($)	Dec. 31, 2017 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Restricted cash and cash equivalents						$ 162,000
Restricted cash and cash equivalents, long-term	$ 2,500,000		$ 2,500,000			2,500,000
Accumulated Deficit [Member] \| ASC Topic 606 [Member]
Summary Of Significant Accounting Policies [Line Items]
Net reduction in opening accumulated deficit					$ 200,000
JDRF [Member]
Summary Of Significant Accounting Policies [Line Items]
Restricted cash and cash equivalents	$ 0		$ 0			$ 200,000
Revenue [Member]
Summary Of Significant Accounting Policies [Line Items]
Number of customers \| Customer	3	1	3	1
Revenue [Member] \| Customer [Member]
Summary Of Significant Accounting Policies [Line Items]
Concentration risk percentage	100.00%	100.00%	100.00%	100.00%

Summary of Significant Accounting Policies - Schedule of Reconciliation of Cash, Cash Equivalents and Restricted Cash (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017	Dec. 31, 2016
Accounting Policies [Abstract]
Cash and cash equivalents	$ 1,163	$ 11,758
Restricted cash and cash equivalents		162
Restricted cash and cash equivalents, long-term	2,500	2,500
Total cash, cash equivalents and restricted cash and cash equivalents shown in the consolidated statement of cash flows	$ 3,663	$ 14,420	$ 32,513	$ 51,505

Collaboration Agreements - Additional Information (Detail) - USD ($)		1 Months Ended		3 Months Ended		6 Months Ended
	Dec. 21, 2017	May 31, 2018	Aug. 31, 2017	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Additional funding receivable				$ 2,270,000		$ 2,270,000		$ 8,000,000
Research and development				8,594,000	$ 9,623,000	17,537,000	$ 20,583,000
Collaborative Arrangements [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Changes in estimated transaction prices				0		0
Collaborative Arrangements [Member] \| Phase 2 MRCT [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Maximum contribution amount to clinical trial				3,000,000		3,000,000
Collaborative Arrangements [Member] \| Reneo [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
License fee received	$ 3,000,000
Unrecognized amount of transaction price allocated to performance obligation				$ 3,600,000		$ 3,600,000
Remainder of performance obligation expected recognition period				11 months 15 days		11 months 15 days
Collaboration revenue recognized				$ 900,000		$ 1,800,000
Collaborative Arrangements [Member] \| Reneo [Member] \| Maximum [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Potential development and regulatory milestone payments	94,500,000
Collaborative Arrangements [Member] \| Hangzhou Zhongmei Huadong Pharmaceutical Co., Ltd. [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
License fee received	8,000,000
Potential regulatory milestone payments based on regulatory approval	20,000,000
Potential sales-based milestones based on tiered sales of licensed products	50,000,000
Collaborative Arrangements [Member] \| Hangzhou Zhongmei Huadong Pharmaceutical Co., Ltd. [Member] \| Phase 2 MRCT [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Maximum contribution amount to clinical trial	3,000,000
Collaborative Arrangements [Member] \| Hangzhou Zhongmei Huadong Pharmaceutical Co., Ltd. [Member] \| Phase 2 MRCT [Member] \| License and Technology Transfer Services of Chemistry and Manufacturing Know-How [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Remainder of performance obligation expected recognition period				11 months 15 days		11 months 15 days
Collaboration revenue recognized				$ 1,100,000		$ 2,300,000
Collaborative Arrangements [Member] \| Hangzhou Zhongmei Huadong Pharmaceutical Co., Ltd. [Member] \| Phase 2 MRCT [Member] \| License and Technology Transfer Services of Chemistry and Manufacturing Know-How [Member] \| Transferred at Point in Time [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Unrecognized amount of transaction price allocated to performance obligation				5,600,000		5,600,000
Collaborative Arrangements [Member] \| Hangzhou Zhongmei Huadong Pharmaceutical Co., Ltd. [Member] \| Phase 2 MRCT [Member] \| License and Technology Transfer Services of Chemistry and Manufacturing Know-How [Member] \| Transferred over Time [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Unrecognized amount of transaction price allocated to performance obligation				4,500,000		4,500,000
Collaborative Arrangements [Member] \| Hangzhou Zhongmei Huadong Pharmaceutical Co., Ltd. [Member] \| Obligation to Sponsor and Conduct Portion of Phase 2 MRCT [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Collaboration revenue recognized				0		0
Collaborative Arrangements [Member] \| Hangzhou Zhongmei Huadong Pharmaceutical Co., Ltd. [Member] \| Obligation to Participate in Joint Development Committee to Oversee Development of Products and Phase 2 MRCT [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Collaboration revenue recognized				0		0
Collaborative Arrangements [Member] \| Hangzhou Zhongmei Huadong Pharmaceutical Co., Ltd. [Member] \| Maximum [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Potential development and regulatory milestone payments	$ 25,000,000
Collaborative Arrangements [Member] \| Newsoara Biopharma Co., Ltd. [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
License fee received		$ 2,000,000
Potential development and regulatory milestone payments		$ 63,000,000
Unrecognized amount of transaction price allocated to performance obligation				$ 1,600,000		$ 1,600,000
Remainder of performance obligation expected recognition period				3 months 15 days		3 months 15 days
Collaboration revenue recognized				$ 400,000		$ 400,000
Collaborative Arrangements [Member] \| JDRF [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Maximum research funding receivable achievement based on research and development milestones			$ 3,000,000
Maximum funding percentage of research and development milestones			50.00%
Funding received						500,000
Additional funding receivable				$ 300,000		300,000
Research and development						$ 500,000

Collaboration Agreements - Summary of Contract Liabilities Related to Company's Collaboration Agreements (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Deferred Revenue Disclosure [Abstract]
Deferred revenue	$ 10,114		$ 8,757
Deferred revenue - net of current portion	603		4,497
Total contract liabilities	10,717		$ 13,254
Deferred revenue, Change	1,357
Deferred revenue - net of current portion, Change	(3,894)
Total contract liabilities, Change	$ (2,537)	$ (21)

Share-Based Compensation - Additional Information (Detail) - USD ($)	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-qualified stock option awards vesting period	3 years
Non-qualified stock option awards expiration term	10 years
Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to non-vested share-based compensation arrangements of outstanding stock option awards	$ 2,200,000
Weighted average period to recognize unrecognized share-based compensation cost	1 year 7 months 6 days
Weighted average grant date fair value of options granted	$ 2.30	$ 3.80
Aggregate intrinsic value of outstanding awards	$ 0
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average period to recognize unrecognized share-based compensation cost	1 year 8 months 12 days
Unrecognized compensation cost related to non-vested share-based compensation arrangements	$ 100,000

Share-Based Compensation - Assumptions Used to Estimate Fair Value of Stock Option Awards Granted (Detail)	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Schedule of Share Based Compensation Valuation Assumptions [Line Items]
Expected dividend yield	0.00%	0.00%
Minimum [Member]
Schedule of Share Based Compensation Valuation Assumptions [Line Items]
Expected volatility	71.15%	84.22%
Expected life of option, in years	5 years 8 months 12 days	5 years 9 months 18 days
Risk-free interest rate	2.69%	1.94%
Maximum [Member]
Schedule of Share Based Compensation Valuation Assumptions [Line Items]
Expected volatility	99.23%	85.93%
Expected life of option, in years	6 years	6 years
Risk-free interest rate	2.81%	2.24%

Share-Based Compensation - Summary of Stock Award Activity for the Period (Detail)	6 Months Ended
	Jun. 30, 2018 $ / shares shares
Share Based Arrangements To Obtain Goods And Services [Abstract]
Number of Shares, Awards outstanding, Beginning balance \| shares	1,960,732
Number of Shares, Granted \| shares	101,250
Number of Shares, Forefeited \| shares	(135,057)
Number of Shares, Awards outstanding, Ending balance \| shares	1,926,925
Number of Shares, Options exercisable \| shares	1,033,730
Number of Shares, Options exercisable, Weighted average remaining contractual term	7 years 8 months 12 days
Number of Shares, Options vested and expected to vest \| shares	1,893,488
Number of Shares, Options vested and expected to vest, Weighted average remaining contractual term	8 years
Weighted-Average Exercise Price, Awards outstanding, Beginning balance \| $ / shares	$ 8.50
Weighted-Average Exercise Price, Granted \| $ / shares	3.29
Weighted-Average Exercise Price, Forfeited \| $ / shares	6.04
Weighted-Average Exercise Price, Awards outstanding, Ending balance \| $ / shares	8.40
Weighted-Average Exercise Price, Options exercisable \| $ / shares	9.34
Weighted-Average Exercise Price, Options vested and expected to vest \| $ / shares	$ 8.45

Share-Based Compensation - Summary of Activity Related to RSU Awards (Detail) - Restricted Stock Units [Member]	6 Months Ended
	Jun. 30, 2018 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Awards outstanding, Beginning balance \| shares	35,000
Number of Shares, Vested \| shares	(11,667)
Number of Shares, Awards outstanding, Ending balance \| shares	23,333
Number of Shares, RSUs expected to vest \| shares	22,779
Weighted-Average Grant Date Fair Value, Awards outstanding, Beginning balance \| $ / shares	$ 5.81
Weighted-Average Grant Date Fair Value, Vested \| $ / shares	5.81
Weighted-Average Grant Date Fair Value, Awards outstanding, Ending balance \| $ / shares	5.81
Weighted-Average Grant Date Fair Value, RSUs expected to vest \| $ / shares	$ 5.81

Share-Based Compensation - Summary of Compensation Expense Related to Grants of Stock Options and RSUs (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total share-based compensation expense	$ 803	$ 959	$ 1,766	$ 1,698
Research and Development [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total share-based compensation expense	225	395	624	672
General and Administrative [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total share-based compensation expense	$ 578	$ 564	$ 1,142	$ 1,026

Notes Payable - Schedule of Notes Payable (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Debt Disclosure [Abstract]
Notes payable under the Loan Agreement	$ 18,958	$ 20,000
Accreted final payment (unamortized debt discount)	134	(413)
Total notes payable	19,092	19,587
Less: Current portion	(8,229)	(4,271)
Total notes payable, net of current portion	$ 10,863	$ 15,316

Notes Payable - Additional Information (Detail) - Loan and Security Agreement [Member] - USD ($) $ / shares in Units, $ in Millions			1 Months Ended		6 Months Ended	12 Months Ended
	Mar. 24, 2017	Oct. 28, 2016	Mar. 31, 2017	Oct. 31, 2016	Jun. 30, 2018	Dec. 31, 2017	Dec. 31, 2016
LIBOR [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate floor				0.50%
Horizon Technology Finance Corporation and Silicon Valley Bank [Member]
Debt Instrument [Line Items]
Loan borrowed amount				$ 20.0
Debt instrument, interest rate floor				10.50%
Variable rate basis					one-month LIBOR
Interest rate description					Each loan tranche bears interest at a floating rate equal to 10.5% plus the amount by which the one-month London Interbank Offer Rate (“LIBOR”) exceeds 0.5%.
Minimum cash balance required in deposit account				$ 2.5
Additional default interest rate				5.00%
Warrant exercise price condition					Exercise price equal to the lower of (a) the volume weighted average price per share of the Company?s Class A Common Stock, as reported on the principal stock exchange on which the Company?s Class A Common Stock is listed, for 10 trading days prior to the issuance of the applicable Warrants or (b) the closing price of a share of the Company?s Class A Common Stock on the trading day prior to the issuance of the applicable Warrants.
Warrants expiration period		7 years
Costs incurred in connection with loan agreement							$ 0.7
Allocated fair value of warrants issued					$ 0.9	$ 0.9
Horizon Technology Finance Corporation and Silicon Valley Bank [Member] \| Prepayments for First 18 Months [Member]
Debt Instrument [Line Items]
Prepayment penalty fee				4.00%
Horizon Technology Finance Corporation and Silicon Valley Bank [Member] \| Prepayments Thereafter [Member]
Debt Instrument [Line Items]
Prepayment penalty fee				2.00%
Horizon Technology Finance Corporation and Silicon Valley Bank [Member] \| Tranche One [Member]
Debt Instrument [Line Items]
Loan borrowed amount				$ 12.5
Debt instrument, payment terms					The Company borrowed the first tranche of $12.5 million upon close of the Loan Agreement in October 2016. The first tranche requires only monthly interest payments until May 1, 2018 followed by equal monthly payments of principal plus accrued interest through the scheduled maturity date on May 1, 2020.
Debt instrument, final payment				$ 0.8
Debt instrument, maturity date				May 01, 2020
Debt instrument, frequency of periodic Payment					monthly
Warrants to purchase shares of common stock		152,580
Exercise price of warrants		$ 6.39
Warrant shares percentage issued of loan amount		6.00%
Final payments, accrued additional interest expense					$ 0.8
Horizon Technology Finance Corporation and Silicon Valley Bank [Member] \| Tranche Two [Member]
Debt Instrument [Line Items]
Loan borrowed amount			$ 7.5
Debt instrument, payment terms					The Company borrowed the second tranche of $7.5 million in March 2017. The second tranche requires only monthly interest payments until October 1, 2018 followed by equal monthly payments of principal plus accrued interest through the scheduled maturity date on October 1, 2020.
Debt instrument, final payment			$ 0.5
Debt instrument, maturity date			Oct. 01, 2020
Debt instrument, frequency of periodic Payment					monthly
Warrants to purchase shares of common stock	38,006
Exercise price of warrants	$ 5.92
Warrant shares percentage issued of loan amount	3.00%	3.00%
Final payments, accrued additional interest expense					$ 0.5
Horizon Technology Finance Corporation and Silicon Valley Bank [Member] \| Tranche Three [Member]
Debt Instrument [Line Items]
Loan amount available for borrowing					$ 5.0
Tranches expiration date					Jun. 30, 2017

Commitments and Contingencies - Additional Information (Detail) - USD ($)	1 Months Ended	6 Months Ended
	May 31, 2015	Jun. 30, 2018	Feb. 28, 2007
Developmental and Regulatory Milestone Payment [Member] \| Novo License Agreement [Member] \| Maximum [Member]
Commitments And Contingencies [Line Items]
Potential milestone payment			$ 115,000,000
Sales-based Milestones Payment [Member] \| Novo License Agreement [Member]
Commitments And Contingencies [Line Items]
Potential milestone payment			$ 75,000,000
Phase 2 MRCT [Member] \| Collaborative Arrangements [Member]
Commitments And Contingencies [Line Items]
Maximum contribution amount to clinical trial		$ 3,000,000
Columbia University [Member]
Commitments And Contingencies [Line Items]
Annual fee obligated to pay under the agreement	$ 100,000
Annual fee payment obligation period		2015 through 2021
Columbia University [Member] \| Regulatory Milestone Payment [Member]
Commitments And Contingencies [Line Items]
Potential milestone payment	$ 800,000

Redeemable Noncontrolling Interest - Additional Information (Detail) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Noncontrolling Interest [Line Items]
Redemption amount of noncontrolling interest	$ 39.4	$ 131.4
Class A Common Stock [Member]
Noncontrolling Interest [Line Items]
Number of days used to determine exchange value based on weighted average price of Class A common stock	20 days
Class A Common Stock [Member] \| Exchange of Redeemable Non controlling Interest To Class A Common Stock [Member]
Noncontrolling Interest [Line Items]
Stock conversion ratio	1.00
vTv Therapeutics LLC [Member]
Noncontrolling Interest [Line Items]
Noncontrolling interest ownership percentage	68.00%

Related-Party Transactions - Additional Information (Detail)		6 Months Ended
	Dec. 05, 2017 USD ($) $ / shares shares	Jun. 30, 2018 USD ($) shares
Class A Common Stock [Member] \| Exchange of Redeemable Non controlling Interest To Class A Common Stock [Member]
Related Party Transaction [Line Items]
Stock conversion ratio		1.00
MacAndrews & Forbes Incorporated [Member]
Related Party Transaction [Line Items]
Ownership percentage of majority owner		79.00%
Amount of cash savings percentage		85.00%
Description of tax receivable agreement		The Company and MacAndrews are party to a tax receivable agreement (the “Tax Receivable Agreement”), which provides for the payment by the Company to M&F TTP Holdings Two LLC (“M&F”), as successor in interest to vTv Therapeutics Holdings, LLC (“vTv Therapeutics Holdings”), and M&F TTP Holdings LLC (or certain of its transferees or other assignees) of 85% of the amount of cash savings, if any, in U.S. federal, state and local income tax or franchise tax that the Company actually realizes (or, in some circumstances, the Company is deemed to realize) as a result of (a) the exchange of Class B Common Stock, together with the corresponding number of vTv Units, for shares of the Company’s Class A Common Stock (or for cash), (b) tax benefits related to imputed interest deemed to be paid by the Company as a result of the Tax Receivable Agreement and (c) certain tax benefits attributable to payments under the Tax Receivable Agreement.
MacAndrews & Forbes Incorporated [Member] \| 2017 Letter Agreement [Member]
Related Party Transaction [Line Items]
Warrants expiration date	Dec. 05, 2024
MacAndrews & Forbes Incorporated [Member] \| Class B Common Stock [Member]
Related Party Transaction [Line Items]
Shares held by related party		23,084,267
MacAndrews & Forbes Incorporated [Member] \| Class A Common Stock [Member]
Related Party Transaction [Line Items]
Shares held by related party		3,757,218
MacAndrews & Forbes Incorporated [Member] \| Class A Common Stock [Member] \| Exchange of Redeemable Non controlling Interest To Class A Common Stock [Member]
Related Party Transaction [Line Items]
Stock conversion ratio		1.00
MacAndrews & Forbes Incorporated [Member] \| Class A Common Stock [Member] \| 2017 Letter Agreement [Member]
Related Party Transaction [Line Items]
Aggregate amount of common stock may be sold \| $	$ 10,000,000
Share price \| $ / shares	$ 4.38
Shares available under warrant exercised	198,267	1,141,552
Warrants, Exercise price per unit \| $ / shares	$ 5.04
Funding received \| $		$ 5,000,000
Warrants to purchase shares of common stock	198,267	1,141,552

Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Income Taxes [Line Items]
Income tax provision	$ 200,000	$ 0	$ 200,000	$ 0
US statutory corporate income tax rate			21.00%		35.00%
M&F TTP Holdings LLC [Member]
Income Taxes [Line Items]
Amount of cash savings percentage			85.00%

Net Loss per Share - Reconciliation of the Numerator and Denominator Used in the Calculation of Basic and Diluted Net Loss per Share of Class A Common Stock (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Numerator:
Net loss	$ (9,596)	$ (13,414)	$ (19,556)	$ (27,700)
Less: Net loss attributable to noncontrolling interests	(6,524)	(9,451)	(13,532)	(19,517)
Net loss attributable to vTv Therapeutics Inc.	$ (3,072)	$ (3,963)	$ (6,024)	$ (8,183)
Class A Common Stock [Member]
Denominator:
Weighted-average vTv Therapeutics Inc. Class A Common Stock, basic and diluted	10,049,831	9,693,254	9,875,743	9,693,254
Net loss per share of vTv Therapeutics Inc. Class A Common Stock, basic and diluted	$ (0.31)	$ (0.41)	$ (0.61)	$ (0.84)

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details

- Definition

The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 1A
-Subparagraph (a)
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (a)(1)
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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Reference 10: http://www.xbrl.org/2003/role/exampleRef
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+ Details

Net Loss per Share - Schedule of Potentially Dilutive Securities Not Included in Calculation of Diluted Net Loss per Share (Detail) - shares	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities not included in calculation of dilutive net loss per share	26,574,886	25,271,266
Class B Common Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities not included in calculation of dilutive net loss per share	23,094,221	23,119,246
Common Stock Options Granted Under the Plan [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities not included in calculation of dilutive net loss per share	1,926,925	1,926,434
Restricted Stock Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities not included in calculation of dilutive net loss per share	23,334	35,000
Common Stock Options Granted Under 2017 Letter Agreement [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities not included in calculation of dilutive net loss per share	1,141,553
Common Stock Warrants [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities not included in calculation of dilutive net loss per share	388,853	190,586

Fair Value of Financial Instruments - Summary of Conclusions Reached Regarding Fair Value Measurements (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Significant Unobservable Inputs (Level 3) [Member]
Fair Value Of Assets And Liabilities Measured On Recurring Basis [Line Items]
Balance at January 1	$ 492	$ 167
Net Change in fair value included in earnings	(291)
Sales / Repurchases		(167)
Balance at June 30,	201
Significant Unobservable Inputs (Level 3) [Member] \| Warrant Liability, Related Party [Member]
Fair Value Of Assets And Liabilities Measured On Recurring Basis [Line Items]
Balance at January 1	492
Net Change in fair value included in earnings	(291)
Balance at June 30,	201
Significant Unobservable Inputs (Level 3) [Member] \| Warrant Liability [Member]
Fair Value Of Assets And Liabilities Measured On Recurring Basis [Line Items]
Balance at January 1		167
Sales / Repurchases		$ (167)
Fair Value, Measurements, Recurring [Member]
Fair Value Of Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	201		$ 492
Fair Value, Measurements, Recurring [Member] \| Warrant Liability, Related Party [Member]
Fair Value Of Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	201		492
Fair Value, Measurements, Recurring [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Fair Value Of Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	201		492
Fair Value, Measurements, Recurring [Member] \| Significant Unobservable Inputs (Level 3) [Member] \| Warrant Liability, Related Party [Member]
Fair Value Of Assets And Liabilities Measured On Recurring Basis [Line Items]
Total	$ 201		$ 492

Fair Value of Financial Instruments - Summary of Significant Inputs Utilized in the Valuation of Warrants (Detail) - Common Stock Warrants [Member]	Jun. 30, 2018
Annual Volatility [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Inputs utilized in the valuation of warrants	97.04
Annual Risk Free Rate [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Inputs utilized in the valuation of warrants	2.79

Subsequent Events - Additional Information (Detail) - USD ($)				6 Months Ended
	Jul. 30, 2018	Jul. 06, 2018	Dec. 05, 2017	Jun. 30, 2018
MacAndrews & Forbes Incorporated [Member] \| 2017 Letter Agreement [Member]
Subsequent Event [Line Items]
Warrants expiration date			Dec. 05, 2024
Class A Common Stock [Member] \| MacAndrews & Forbes Incorporated [Member] \| 2017 Letter Agreement [Member]
Subsequent Event [Line Items]
Shares available under warrant exercised			198,267	1,141,552
Funding received				$ 5,000,000
Share price			$ 4.38
Aggregate amount of common stock may be sold			$ 10,000,000
Warrants, Exercise price per unit			$ 5.04
Subsequent Event [Member] \| MacAndrews and Forbes Group LLC [Member] \| 2018 Letter Agreement [Member]
Subsequent Event [Line Items]
Aggregate amount of common stock may be sold	$ 10,000,000
Warrants expiration date	Jul. 30, 2025
Subsequent Event [Member] \| Class A Common Stock [Member] \| MacAndrews & Forbes Incorporated [Member] \| 2017 Letter Agreement [Member]
Subsequent Event [Line Items]
Shares available under warrant exercised		570,776
Funding received		$ 2,500,000
Subsequent Event [Member] \| Class A Common Stock [Member] \| MacAndrews and Forbes Group LLC [Member] \| 2018 Letter Agreement [Member]
Subsequent Event [Line Items]
Shares available under warrant exercised	518,654
Share price	$ 1.33
Aggregate amount of common stock may be sold	$ 10,000,000
Warrants, Exercise price per unit	$ 1.53