Description of Business, Basis of Presentation and Going Concern (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Accumulated deficit	$ (274,319)	$ (265,524)
Cash and cash equivalents	$ 18,766	$ 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