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Finance Income (Expense), Net - Summary of Finance Income (Expense), Net (Details) - USD ($)
$ in Thousands
12 Months Ended
May 31, 2021
May 31, 2020
May 31, 2019
Finance Income Expense Net [Abstract]      
Interest income $ 2,926 $ 6,273 $ 11,138
Interest expense (30,903) (25,644) (5,879)
Finance income (expense), net $ (27,977) $ (19,371) $ 5,259