Income Taxes - Details of Net Deferred Tax Asset (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Deferred tax assets:
Net Operating Loss Carryforward	$ 72,886	$ 71,423
Stock Based Compensation	3,230	4,584
General Business Credit	6,872	6,872
Research & Experimental Expenses	219	338
Inventories	27	474
Deferred Interest	2,150	1,909
Accrued Expenses	68	84
Deferred License Revenue	0	106
Other Deferred Tax Assets	244	65
Total Deferred Tax Assets	85,696	85,855
Deferred Tax Liabilities:
Goodwill & Intangible Assets	363	327
Prepaid Expenses	208	205
Book over Tax Depreciation	7	60
Total Deferred Tax Liabilities	578	592
Net Deferred Tax Asset Before Valuation Allowance	85,118	85,263
Valuation Allowance	(85,118)	(85,263)
Net Deferred Tax Asset	$ 0	$ 0