Net Loss per Share - Summary of Potentially Dilutive Securities not Included in Calculation of Diluted Net Loss per Share (Detail) - shares	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities not included in calculation of dilutive net loss per share (in shares)	6,308,952	1,344,537
Class B Common Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities not included in calculation of dilutive net loss per share (in shares)	241	577,349
Common stock options granted under the Plan
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities not included in calculation of dilutive net loss per share (in shares)	1,007,306	691,593
Common stock warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities not included in calculation of dilutive net loss per share (in shares)	5,301,405	75,595

vTv Therapeutics Inc. 10-Q