Note 13 - Income Taxes - Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
U.S. federal statutory tax rate	$ (3,978)	$ (2,501)
U.S. federal statutory tax rate, percent	21.00%
State and local income taxes, net of federal income tax effects(1)	$ 38	(311)
State and local income taxes, net of federal income tax effects(1), percent	(0.20%)
Foreign tax effects		(1)
Effect of changes in tax laws or rates	$ 0
Effect of changes in tax laws or rates, percent	0.00%
Effect of cross-border tax laws	$ 0
Effect of cross-border tax laws, percent	0.00%
Tax credits	$ 0
Tax credits, percent	0.00%
Changes in valuation allowances	$ 2,932	3,850
Changes in valuation allowances, percent	(15.50%)
Stock based compensation	$ 405
Stock based compensation, percent	(2.10%)
Other	$ 32	0
Other, percent	(0.20%)
Change in unrecognized tax benefits	$ 0
Change in unrecognized tax benefits, percent	0.00%
Deferred true up - intangibles	$ 596	(2,194)
Deferred true up - intangibles, percent	(3.10%)
Other	$ (101)	404
Other, percent	0.50%
Total income tax benefit	$ 41	$ (47)
Total income tax benefit	(0.20%)	0.40%
Warrant liabilities		$ (177)
Stock compensation		$ 883
His Majesty's Revenue and Customs (HMRC) [Member]
Foreign tax effects	$ 113
Foreign tax effects, percent	(0.60%)
Canada Revenue Agency [Member]
Foreign tax effects	$ 0
Foreign tax effects, percent	0.00%
Revenue Commissioners, Ireland [Member]
Foreign tax effects	$ 0
Foreign tax effects, percent	0.00%
State Administration of Taxation, China [Member]
Foreign tax effects	$ 4
Foreign tax effects, percent	0.00%