Income Taxes - Details of Net Deferred Tax Asset (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Deferred tax assets:
Net Operating Loss Carryforward	$ 71,423	$ 72,612
Stock Based Compensation	4,584	7,856
General Business Credit	6,872	6,872
Research & Experimental Expenses	338	459
Inventories	474	398
Accrued Expenses	84	144
Deferred License Revenue	106	118
Other Deferred Tax Assets	1,974	1,989
Total Deferred Tax Assets	85,855	90,448
Deferred Tax Liabilities:
Goodwill & Intangible Assets	327	259
Prepaid Expenses	205	181
Book over Tax Depreciation	60	35
Total Deferred Tax Liabilities	592	475
Subtotal	85,263	89,973
Valuation Allowance	(85,263)	(89,973)
Net Deferred Tax Asset	$ 0	$ 0