Income Taxes - Components of Net Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Deferred tax assets
Accrued bonus	$ 143	$ 274
Accrued vacation	45	47
Stock-based compensation	4,887	4,265
Capitalized R&D expenses	300	7,825
Rebate reserve	153	220
Intangible assets, net	113	181
Investment in equity securities	987	987
Net operating loss carryforwards	30,091	15,716
Other	98	48
Total gross deferred tax asset	36,817	29,563
Valuation allowance	(36,817)	(29,516)
Net deferred tax assets	0	47
Deferred tax liabilities
Bonus compensation	0	(47)
Net deferred tax asset	$ 0	$ 0