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Note 14 - Income Tax - Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Income tax benefit computed at federal statutory tax rate	$ (537)	$ (1,927)
Permanent differences, net, amount	(89)	375
Non-deductible executive compensation	324	346
Global Intangible Low-Taxed Income (GILTI)	537	552
State income taxes, net of federal income tax benefit, amount	(19)	(295)
Stock-based compensation	(329)	69
Tax credits	(51)	492
Net operating loss true-ups and expirations	1,140	431
Change in reserve for uncertain tax position	239	688
Impact of change to prior year tax accruals	(171)	(232)
Change in valuation allowance allocated to income tax	631	(102)
Other	(816)	(60)
Total income tax expense (benefit)	$ 859	$ 337

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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 the change in reserve for uncertain tax position.

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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 tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits.

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

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