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Investments (Details) - USD ($) $ in Thousands	1 Months Ended	6 Months Ended
Investments (Details) - USD ($) $ in Thousands	Jan. 06, 2022	Nov. 30, 2021	Nov. 30, 2020	May 31, 2021
Investments, Debt and Equity Securities [Abstract]
Cash surrender value of insurance policies		$ 270,146		$ 252,061
Equity method investments		16,814		19,388
Cost method investments		2,163		3,167
Total investments		289,123		$ 274,616
Losses due to impairment		0	$ 0
Subsequent Event [Line Items]
Cash consideration for purchase of remainder of investment		$ 45,670	$ 6,932
Subsequent Event
Subsequent Event [Line Items]
Cash consideration for purchase of remainder of investment	$ 47,700