Note 14 - Accumulated Other Comprehensive Loss - Changes in Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2025	Mar. 31, 2025
Balance	$ 3,267,010	$ 3,145,767
Balance	3,402,068	3,267,010
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
Balance	(742)	(790)
Other comprehensive income before reclassifications	(1)	43
Amounts reclassified from accumulated other comprehensive income		5
Other comprehensive loss, net of tax	(1)	48
Balance	(743)	(742)
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance	(42,582)	(47,721)
Other comprehensive income before reclassifications	19,634	5,139
Amounts reclassified from accumulated other comprehensive income		0
Other comprehensive loss, net of tax	19,634	5,139
Balance	(22,948)	(42,582)
AOCI Attributable to Parent [Member]
Balance	(43,324)	(48,511)
Other comprehensive income before reclassifications	19,633	5,182
Amounts reclassified from accumulated other comprehensive income		5
Other comprehensive loss, net of tax	19,633	5,187
Balance	$ (23,691)	$ (43,324)