Fair Value Measurements - Summary of Fair Value Measurement of Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Current assets:
Total assets	$ 7,770	$ 7,538
Liabilities:
Term loan	54,986	51,481
Total liabilities	59,334	54,244
Redeemable Convertible Preferred stock warrants
Liabilities:
Warrants	406	230
Common stock warrants
Liabilities:
Warrants	3,942	2,533
Money market funds
Current assets:
Money market funds	7,770	7,538
Level 1
Current assets:
Total assets	7,770	7,538
Liabilities:
Term loan	0	0
Total liabilities	0	0
Level 1 | Redeemable Convertible Preferred stock warrants
Liabilities:
Warrants	0	0
Level 1 | Common stock warrants
Liabilities:
Warrants	0	0
Level 1 | Money market funds
Current assets:
Money market funds	7,770	7,538
Level 2
Current assets:
Total assets	0	0
Liabilities:
Term loan	0	0
Total liabilities	0	0
Level 2 | Redeemable Convertible Preferred stock warrants
Liabilities:
Warrants	0	0
Level 2 | Common stock warrants
Liabilities:
Warrants	0	0
Level 2 | Money market funds
Current assets:
Money market funds	0	0
Level 3
Current assets:
Total assets	0	0
Liabilities:
Term loan	54,986	51,481
Total liabilities	59,334	54,244
Level 3 | Redeemable Convertible Preferred stock warrants
Liabilities:
Warrants	406	230
Level 3 | Common stock warrants
Liabilities:
Warrants	3,942	2,533
Level 3 | Money market funds
Current assets:
Money market funds	$ 0	$ 0