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Note 9 - Income Taxes - Reconciliation of Effective Income Tax Rate (Details)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Federal statutory rate	21.00%	21.00%
State taxes, net of federal benefit	0.50%	1.30%
Foreign rate differential	1.00%	1.10%
Fair value of Contingent Consideration	(9.70%)	(6.50%)
Provision-to-return adjustments	(5.60%)	0.50%
Net operating loss expirations	(24.50%)	(2.50%)
Deferred tax true-ups	(0.20%)	(1.00%)
State rate changes	(0.50%)	2.00%
Other permanent	(1.60%)	(1.20%)
Changes in valuation allowance	16.50%	(16.50%)
Effective tax rate	(3.10%)	(1.80%)

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Percentage 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 deferred tax true-ups.

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

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Percentage 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 other nondeductible expenses.

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Percentage 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 applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).

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