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Note 11 - Accumulated Other Comprehensive Income (Loss) - Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Balance	$ 828,493	$ 644,356
Balance	832,035	813,431
AOCI Attributable to Parent [Member]
Balance	(16,817)	(3,420)
Balance	(22,305)	(10,096)
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Other comprehensive income (loss) before reclassifications	(4,972)	(6,842)
Net current-period other comprehensive income (loss)	(4,972)	(6,842)
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
Other comprehensive income (loss) before reclassifications	(516)	166
Net current-period other comprehensive income (loss)	$ (516)	$ 166

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Amount after tax, before reclassification adjustments, of other comprehensive income (loss), attributable to parent.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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