Note 14 - Accumulated Other Comprehensive Loss - Changes in Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023
Balance	$ 1,839,089		$ 1,668,602
Balance	1,944,864	$ 1,839,089
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
Balance	(4,786)	(5,514)	(7,727)
Other comprehensive income before reclassifications	1,288	886	2,524
Tax effect	(156)	(158)	(311)
Other comprehensive loss, net of tax:	1,132	728	2,213
Balance	(3,654)	(4,786)	(5,514)
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance	(38,611)	(12,431)	(15,350)
Other comprehensive income before reclassifications	(4,838)	(26,180)	2,919
Tax effect	0	0	0
Other comprehensive loss, net of tax:	(4,838)	(26,180)	2,919
Balance	(43,449)	(38,611)	(12,431)
AOCI Attributable to Parent [Member]
Balance	(43,397)	(17,945)	(23,077)
Other comprehensive income before reclassifications	(3,550)	(25,294)	5,443
Tax effect	(156)	(158)	(311)
Other comprehensive loss, net of tax:	(3,706)	(25,452)	5,132
Balance	$ (47,103)	$ (43,397)	$ (17,945)