Stock-Based Compensation - Schedule of Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Stock options
Number of Options Outstanding
Stock options outstanding, beginning (in shares)			8,438,000
Stock options granted (in shares)	0	0	0	0
Stock options exercised (in shares)			(27,000)
Stock options forfeited or expired (in shares)			(363,000)
Stock options outstanding, ending balance (in shares)	8,048,000		8,048,000		8,438,000
Stock option exercisable (in shares)	7,989,000		7,989,000
Stock options vested and expected to vest (in shares)	8,048,000		8,048,000
Weighted-Average Exercise Price
Stock options outstanding, beginning balance (USD per shares)			$ 12.93
Stock options granted (USD per shares)			0
Stock options exercised (USD per shares)			2.64
Stock options forfeited or expired (USD per shares)			11.41
Stock options outstanding, ending balance (USD per shares)	$ 13.03		13.03		$ 12.93
Stock options exercisable (USD per shares)	13.07		13.07
Stock options vested and expected to vest (USD per shares)	$ 13.03		$ 13.03
Weighted-Average Remaining Contractual Life and Aggregate Intrinsic Value
Share-based compensation arrangement by share-Based payment award, options, outstanding, weighted average remaining contractual term			3 years 5 months 15 days		3 years 1 month 28 days
Weighted-average remaining contractual life of stock options exercisable			3 years 5 months 4 days
Weighted-average remaining contractual life of stock options vested and expected to vest			3 years 5 months 15 days
Aggregate intrinsic value of stock options outstanding, beginning balance			$ 152
Aggregate intrinsic value of stock options outstanding, ending balance	$ 516		516		$ 152
Aggregate intrinsic value of stock options exercisable	497		497
Aggregate intrinsic value of stock options vested and expected to vest	$ 516		$ 516
Performance Shares
Number of Options Outstanding
Stock options outstanding, beginning (in shares)			3,620,000
Stock options forfeited or expired (in shares)			(81,000)
Stock options outstanding, ending balance (in shares)	3,539,000		3,539,000		3,620,000
Stock option exercisable (in shares)	3,539,000		3,539,000
Stock options vested and expected to vest (in shares)	3,539,000		3,539,000

Veritone, Inc. 10-Q