Income Taxes (Reconciliation of Federal and Effective Tax Rate) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income Taxes [Abstract]
Tax at federal statutory rate, amount	$ (24,542)	$ (20,027)	$ (20,003)
Tax at federal statutory rate, percentage	21.00%
State taxes, net of federal benefit amount		(2,247)	(4,032)
Foreign rate differential, amount	$ 1,201	41	(50)
Foreign rate differential, percentage	(1.00%)
R&D credits, amount	$ (382)	(281)	(391)
R&D credit, percentage	0.30%
Change in valuation allowance, amount	$ 6,316	16,563	20,418
Change in valuation allowance, percentage	(5.40%)
Write-off of intercompany payable, amount	$ 4,759
Write-off of intercompany payable, percentage	(4.10%)
Mark-to-market warrant and derivative, amount	$ 7,683	3,482	1,075
Mark-to-market warrant and derivative, percentage	(6.50%)
Nondeductible executive compensation, amount	$ 1,239
Nondeductible executive compensation. percentage	(1.10%)
Other nondeductible items, amount	$ 2,621
Other nondeductible items, percentage	(2.20%)
Other, amount	$ 1,029	816	(192)
Other, percentage	(0.90%)
Stock-based compensation		1,706	3,722
Provision (benefit) for income taxes, amount	$ (76)	$ 53	$ 547
Provision (benefit for income taxes, percentage	0.10%