Description of Business, Basis of Presentation and Going Concern (Detail) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
Sep. 30, 2023	Dec. 31, 2022
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Retained earnings (accumulated deficit)	$ (281,192)	$ (265,524)
Cash and cash equivalent	$ 8,238	$ 12,126
Class A Common Stock
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Common stock par value (in usd per share)	$ 0.01	$ 0.01
Class A Common Stock \| Cantor Fitzgerald
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Remaining available stock value	$ 37,300
Class A Common Stock \| LPC Purchase Agreement
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Common stock, capital shares reserved for future issuance (in shares)	9,437,376
Class B Common Stock
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Common stock par value (in usd per share)	$ 0.01	$ 0.01
vTv Therapeutics LLC
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Percentage of non-voting economic interest of vTv Therapeutics Holdings LLC in vTv LLC	22.10%
Percentage of non-voting economic interest of vTv Therapeutics Inc in vTv LLC	77.90%
vTv Therapeutics LLC \| Class B Common Stock
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Common stock par value (in usd per share)	$ 0.01

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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