Stockholders' Equity - Range of Assumptions on Fair Value of the Stock Options Granted (Detail)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Risk-free interest rate, minimum	3.80%	3.50%
Risk-free interest rate, maximum	4.40%	4.30%
Expected volatility, minimum	98.00%	97.30%
Expected volatility, maximum	110.10%	114.60%
Minimum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Expected term (in years)	5 years 6 months	5 years 6 months
Maximum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Expected term (in years)	7 years	7 years

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

Trevi Therapeutics, Inc. 10-K