Income Taxes - Reconciliation Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	May 31, 2022	May 31, 2021
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Balance at beginning of period	$ 42,457	$ 44,670
Additions for tax positions of the current year	5,558	4,728
Additions for tax positions of prior years	3,093	2,726
Settlements	(7,352)	(5,593)
Statute expirations	(6,182)	(4,074)
Balance at end of period	$ 37,574	$ 42,457