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Financial Risk Management and Financial Instruments - Schedule of Opening Balances of Assets and Liabilities Categorized Within Level 3 of Fair Value Hierarchy Measured at Fair Value on Recurring Basis (Details) - Level 3 [Member] - Fair Value, Measurements, Recurring
$ in Thousands
12 Months Ended
May 31, 2021
USD ($)
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]  
Beginning balance $ (196,405)
Additions (138,361)
Unrealized gain (loss) on fair value (203,503)
Ending balance (538,269)
APHA 24 Convertible Debenture  
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]  
Beginning balance (196,405)
Unrealized gain (loss) on fair value (203,039)
Ending balance (399,444)
Contingent Consideration  
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]  
Additions (58,959)
Unrealized gain (loss) on fair value (1,698)
Ending balance (60,657)
Warrant Liability  
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]  
Additions (79,402)
Unrealized gain (loss) on fair value 1,234
Ending balance $ (78,168)