Net Loss Per Share Attributable to Common Stockholders (Schedule of Earnings Per Share, Basic and Diluted) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Numerator:
Net loss	$ (116,791)	$ (96,426)	$ (95,655)
Cumulative dividends on Series C redeemable convertible preferred stock			(1,239)
Deemed dividend upon down round of redeemable convertible preferred stock			(26,794)
Net loss attributable to common stockholders	$ (116,791)	$ (96,426)	$ (123,688)
Denominator:
Weighted-average shares used to compute net loss per share, basic (in shares)	36,853,867	5,363,435	4,885,231
Weighted-average shares used to compute net loss per share, diluted (in shares)	36,853,867	5,363,435	4,885,231
Net loss per share, basic	$ (3.17)	$ (17.98)	$ (25.32)
Net loss per share, diluted	$ (3.17)	$ (17.98)	$ (25.32)