Note 6 - Income Taxes - Deferred Tax Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Net operating loss carryforward	$ 29,675	$ 28,181
Capitalization of R&D Expense under PRC Tax	6,749	6,729
Section 174 Mandatory R&E Capitalization	2,152	2,870
Share-based compensation	756	1,695
Deferred Incentive Compensation	19	15
Research tax credits	5,489	5,403
Lease liability obligation	71	124
Deferred Revenue	5,652	6,075
Accruals and reserves	76	48
Deferred tax assets from discontinued operations	10,682	7,855
Total deferred tax assets	61,321	58,995
Depreciation	(20)	(29)
Unrealized Gain/Loss	(68)	(41)
Right of use lease assets	(62)	(108)
Deferred tax liabilities from discontinued operations	(909)	(1,005)
Total deferred tax liabilities	(1,059)	(1,183)
Total gross deferred tax assets	60,262	57,812
Less: valuation allowance	(60,262)	(57,812)
Net deferred tax assets	$ 0	$ 0