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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 |

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