Note 15 - Accumulated Other Comprehensive Income (Loss) - Components of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Feb. 28, 2026	Nov. 30, 2025	Aug. 31, 2025	Feb. 28, 2025	Nov. 30, 2024	Aug. 31, 2024	Feb. 28, 2026	Feb. 28, 2025
Balance	$ 1,546,509	$ 1,520,658	$ 1,489,575	$ 3,453,608	$ 3,483,414	$ 3,443,178	$ 1,489,575	$ 3,443,178
Balance	1,525,607	1,546,509	1,520,658	2,702,103	3,453,608	3,483,414	1,525,607	2,702,103
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance	(39,293)	(43,230)	(43,063)	(47,957)	(39,877)	(43,499)	(43,063)	(43,499)
Other comprehensive (loss) income	(4,905)	3,937	(167)	(4,978)	(8,080)	3,622
Balance	$ (44,198)	$ (39,293)	$ (43,230)	$ (52,935)	$ (47,957)	$ (39,877)	$ (44,198)	$ (52,935)

Amount after tax and reclassification adjustments of other comprehensive income (loss).

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+ Details

- Definition

Amount of equity (deficit) attributable to parent and noncontrolling interest. Excludes temporary equity.

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+ Details