Net Loss Per Share Attributable to Common Stockholders - Computation Of Basic And Diluted Net Loss Per Share Attributable To Common Stockholders (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2025	Sep. 30, 2024
Numerator:
Net loss	$ (11,894)	$ (11,350)	$ (10,196)	$ (38,084)	$ (5,650)	$ (3,407)	$ (33,440)	$ (47,141)
Denominator:
Weighted average common shares outstanding	18,702,418			1,354,672			13,873,499	1,359,859
Less: Weighted-average common shares subject to repurchase	(710)			(2,407)			(1,129)	(29,604)
Weighted-average shares outstanding - basic	18,701,708			1,352,265			13,872,369	1,330,255
Weighted-average shares outstanding - diluted	18,701,708			1,352,265			13,872,369	1,330,255
Net loss per share attributable to common stockholders - basic	$ (0.64)			$ (28.16)			$ (2.41)	$ (35.44)
Net loss per share attributable to common stockholders - diluted	$ (0.64)			$ (28.16)			$ (2.41)	$ (35.44)