Note 16 - Reconciliations of Federal Statutory Rate to Effective Income Tax Rate (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Income taxes benefit computed at federal statutory rate	$ 3,700	$ 5,139
State income taxes, net of federal effect	345	480
Permanent differences and other	(289)	790
Change in valuation allowance	(3,756)	(6,409)
Income tax benefit (provision)	$ 0	$ 0

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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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 increase (decrease) in the valuation allowance for deferred tax assets.

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