Note 14 - Supplemental Information of Cash Flows - Schedule of Cash Flows (Details) - USD ($)	12 Months Ended
	May 31, 2024	May 31, 2023
Deconsolidation of variable interest entity	$ 0	$ 3,102,424
Right-of-use assets obtained in exchange for lease liability – operating lease	354,041	5,516,006
Refinancing of certain term loans	0	2,669,892
Capital expenditures in accounts payable	161,280	145,062
Preferred dividend accrual	0	134,141
Interest paid	1,291,938	1,163,650
Income taxes paid	$ 0	$ 525,000