Note 11 - Accumulated Other Comprehensive Income (Loss) - Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Balance	$ 820,698	$ 831,977	$ 828,493	$ 644,356
Balance	810,846	824,621	810,846	824,621
AOCI Attributable to Parent [Member]
Balance	(36,149)	(8,115)	(16,817)	(3,420)
Balance	(47,024)	(13,458)	(47,024)	(13,458)
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Other comprehensive income (loss) before reclassifications	(10,287)	(5,298)	(28,774)	(10,110)
Amounts reclassified from accumulated other comprehensive loss	0	0	0	0
Net current-period other comprehensive income (loss)	(10,287)	(5,298)	(28,774)	(10,110)
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
Other comprehensive income (loss) before reclassifications	(588)	(45)	(1,433)	72
Amounts reclassified from accumulated other comprehensive loss	0	0	0	0
Net current-period other comprehensive income (loss)	$ (588)	$ (45)	$ (1,433)	$ 72