Note 8 - Income Taxes (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Unrecognized Tax Benefits	$ 400	$ 400
Deferred Tax Assets, Valuation Allowance	75,024	70,154
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	4,900	11,700
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	(29,403)	(48,710)
Effective Income Tax Rate Reconciliation, GILTI, Amount	600
Domestic Tax Jurisdiction [Member]
Operating Loss Carryforwards	233,900	207,300
Tax Credit Carryforward, Amount	2,500	2,500
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	(29,161)	(48,791)
State and Local Jurisdiction [Member]
Operating Loss Carryforwards	192,200	180,900
Tax Credit Carryforward, Amount	700	700
Foreign Tax Jurisdiction [Member]
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	$ (242)	$ 81