Note 16 - Income Taxes - Reconciliation of Statutory Federal Income Tax Rate to Effective Income Tax Rate (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Income taxes computed at statutory rates, amount	$ 12,537	$ 7,296
Income taxes computed at statutory rates, percent	(21.00%)	(21.00%)
(Increases) decreases resulting from:
Change in valuation allowance, amount	$ (13,463)	$ (8,634)
Change in valuation allowance, percent	22.00%	24.00%
NOL surrendered for refundable tax credit	$ (2,164)	$ 0
NOL surrendered for refundable tax credit	4.00%	0.00%
Foreign research deductions and credits	$ 1,329	$ 0
Foreign research deductions and credits, percent	(2.00%)	0.00%
Federal and state research and experimentation credits, amount	$ 1,037	$ 787
Federal and state research and experimentation credits, percent	(2.00%)	(2.00%)
State income taxes, net of federal tax benefit, amount	$ 491	$ 414
State income taxes, net of federal tax benefit, percent	(1.00%)	(1.00%)
Other, amount	$ 136	$ 121
Other, percent	0.00%	0.00%
Total	$ (97)	$ (16)
Total, percent	0.00%	0.00%

Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to foreign research deductions and credits.

No definition available.