Schedule II - Valuation and Qualifying Accounts and Reserves (Details) - USD ($) $ in Thousands	12 Months Ended
	May 31, 2021	May 31, 2020	May 31, 2019
Allowance for Doubtful Accounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	$ 35,433	$ 11,343	$ 10,053
Additions	27,517	40,521	7,752
Deductions	50,853	16,431	6,462
Balance at End of Year	12,097	$ 35,433	$ 11,343
Allowance for Doubtful Accounts, COVID-19
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Deductions	$ 14,200