Net Loss Per Share - Basic and diluted net income (loss) per share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Numerator:
Net loss for basic net loss per share attributable to common stockholders	$ (5,527)	$ (5,513)	$ (10,939)	$ (16,690)
Reversal of fair market value remeasurement net gain on Convertible Notes			(7,810)
Add back of interest expense from the Convertible Notes			651
Net loss for diluted net loss per share attributable to common stockholders	$ (5,527)	$ (5,513)	$ (18,098)	$ (16,690)
Denominator:
Weighted-average common shares outstanding, Basic (in shares)	9,377,079	2,574,767	6,757,955	2,574,054
Convertible Notes			486,830
Weighted-average common shares outstanding, Diluted (in shares)	9,377,079	2,574,767	7,244,785	2,574,054
Net loss per share attributable to common stockholders, Basic (in dollars per share)	$ (0.59)	$ (2.14)	$ (1.62)	$ (6.48)
Net loss per share attributable to common stockholders, Diluted (in dollars per share)	$ (0.59)	$ (2.14)	$ (2.5)	$ (6.48)