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Income Taxes and Deferred Income Taxes - Summary of Reconciliation of Income Taxes at Statutory Rate with Reported Taxes (Details) - USD ($)
$ in Thousands
12 Months Ended
May 31, 2022
May 31, 2021
May 31, 2020
Income Tax Disclosure [Abstract]      
Loss before net income taxes: $ (440,674) $ (344,986) $ (109,185)
Income tax benefits at statutory rate (92,542) (72,408) (22,929)
Tax impact of foreign operations 81,316 (19,016) (6,310)
Foreign exchange and other 14,941 1,011 (63)
Non-deductible expenses 6,404 (1,347) 2,474
Non-deductible (taxable) losses 748 45,230 13,305
Changes in enacted rates   135  
Change in fair value of warrant liability (13,359) (259)  
Stock based and other compensation 994 2,902 4,105
Change in valuation allowance 17,255 46,007 1,066
Non deductible dividend   (755)  
Impact on convertible debenture and other differences (22,299)    
Effect of transaction   (10,472)  
Income tax benefits, net $ (6,542) $ (8,972) $ (8,352)