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Note 15 - Income Taxes - Reconciliation of Statutory and Effective Tax Rates (Details)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
U.S. statutory rate	21.00%	21.00%	21.00%
State taxes	3.80%	4.00%	4.00%
State tax rate differential	(0.20%)	0.00%	(0.30%)
Research and development credits	(1.20%)	(2.40%)	(1.10%)
State credits	(0.50%)	(0.90%)	(1.50%)
Share-based compensation benefit	(1.20%)	(0.40%)	(2.70%)
Nondeductible U.S. compensation expense	1.20%	1.00%	1.60%
Foreign tax deduction	0.00%	0.00%	(0.40%)
Uncertain tax positions reserve	0.60%	0.90%	0.00%
Global intangible low tax income	0.40%	1.70%	0.20%
Other	(1.30%)	0.30%	(1.20%)
Effective tax rate	22.60%	25.20%	19.60%

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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 state tax credit.

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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 foreign income tax deduction.

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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 domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of reported income tax expense from difference to expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operations, attributable to global intangible low-taxed income (GILTI).

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Percentage of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to expense for award under share-based payment arrangement. Excludes expense determined to be nondeductible upon grant or after for award under share-based payment arrangement.

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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 research tax credit.

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