Income Taxes - Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract]
United States statutory tax rate	$ (14,728)	$ (11,938)
State and local income taxes, net of federal income tax effect	0	162
Foreign tax effects:	125	165
Changes in valuation allowances	6,822	10,046
Stock option deduction	(902)	1,288
Warrant fair market value remeasurement	2,868	591
(Income)/loss on EMI	0	(185)
Executive compensation limitation	2,066	324
Other	257	176
Adjustment of deferred tax liabilities - other	279	(259)
Adjustment of deferred tax assets - capital loss expiration	3,338	0
Total provision for income taxes	$ 125	$ 370
Effective Income Tax Rate Reconciliation, Percent [Abstract]
United States statutory tax rate	21.00%	21.00%
State and local income taxes, net of federal income tax effect	0.00%	(0.29%)
Other foreign jurisdictions	(0.18%)	(0.29%)
Changes in valuation allowances	(9.73%)	(17.67%)
Stock option deduction	0.0129	(0.0227)
Warrant fair market value remeasurement	(0.0409)	(0.0104)
(Income)/loss on EMI	0	0.0032
Executive compensation limitation	(0.0295)	(0.0057)
Other	(0.37%)	(0.31%)
Adjustment of deferred tax liabilities - other	(0.0040)	0.0046
Adjustment of deferred tax assets - capital loss expiration	(0.0476)	0
Effective Tax Rate	(0.18%)	(0.65%)