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Note 29 - Financial Risk Management and Financial Instruments - Assets and Liabilities Measured on a Recurring Basis (Details) - USD ($)
$ in Thousands
May 31, 2024
May 31, 2023
Equity investments measured at fair value $ 2,359 $ 2,144
Contingent consideration (15,000) (16,218)
Fair Value, Recurring [Member]    
Cash and cash equivalents 228,340 206,632
Marketable securities 32,182 241,897
Convertible notes receivable 32,000 103,401
Equity investments measured at fair value 7,859 7,795
Warrant liability (3,253) (1,817)
Contingent consideration (15,000) (27,107)
Total recurring fair value measurements 281,798 410,233
Fair Value, Recurring [Member] | APHA 24 [Member]    
APHA 24 Convertible debenture (330) (120,568)
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]    
Cash and cash equivalents 228,340 206,632
Marketable securities 32,182 241,897
Convertible notes receivable 0 0
Equity investments measured at fair value 919 1,056
Warrant liability 0 0
Contingent consideration 0 0
Total recurring fair value measurements 261,441 449,585
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | APHA 24 [Member]    
APHA 24 Convertible debenture 0 0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]    
Cash and cash equivalents 0 0
Marketable securities 0 0
Convertible notes receivable 0 0
Equity investments measured at fair value 1,440 1,088
Warrant liability 0 0
Contingent consideration 0 0
Total recurring fair value measurements 1,440 1,088
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | APHA 24 [Member]    
APHA 24 Convertible debenture 0 0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]    
Cash and cash equivalents 0 0
Marketable securities 0 0
Convertible notes receivable 32,000 103,401
Equity investments measured at fair value 5,500 5,651
Warrant liability (3,253) (1,817)
Contingent consideration (15,000) (27,107)
Total recurring fair value measurements 18,917 (40,440)
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | APHA 24 [Member]    
APHA 24 Convertible debenture $ (330) $ (120,568)