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Note 23 - Fair Value Measurements (Details Textual) $ in Thousands	Aug. 31, 2023 USD ($)	May 31, 2023 USD ($)
SweetWater, Montauk, and Truss [Member] \| Measurement Input, Discount Rate [Member] \| Minimum [Member]
Business Combination, Contingent Consideration, Liability, Measurement Input	0.05
SweetWater, Montauk, and Truss [Member] \| Measurement Input, Discount Rate [Member] \| Maximum [Member]
Business Combination, Contingent Consideration, Liability, Measurement Input	0.114
SweetWater, Montauk, and Truss [Member] \| Measurement Input, Probability of Achievement [Member] \| Minimum [Member]
Business Combination, Contingent Consideration, Liability, Measurement Input	0.25
SweetWater, Montauk, and Truss [Member] \| Measurement Input, Probability of Achievement [Member] \| Maximum [Member]
Business Combination, Contingent Consideration, Liability, Measurement Input	90
Long-term Debt, Excluding Convertible Debentures [Member]
Long-Term Debt, Percentage Bearing Fixed Interest, Amount	$ 4,876	$ 0
Convertible Debt [Member]
Convertible Debt	$ 436,570