Investments - Summary of Investments (Details) - USD ($) $ in Thousands	Feb. 28, 2022	May 31, 2021
Investments, Debt and Equity Securities [Abstract]
Cash surrender value of insurance policies	$ 254,245	$ 252,061
Equity method investments	3,522	19,388
Cost method investments	2,163	3,167
Total investments	$ 259,930	$ 274,616

Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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Sum of the carrying amounts as of the balance sheet date of all investments.

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Amount of investments classified as other.

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