Note 7 - Leases - Summary of Liability Maturity (Details) - USD ($)	Aug. 31, 2023	May 31, 2023
Twelve months ending August 31, 2024, Finance Lease	$ 34,374
Twelve months ending August 31, 2024, Operating leases	546,910
Twelve months ending August 31, 2025, Finance Lease	14,818
Twelve months ending August 31, 2025, Operating leases	534,000
Twelve months ending August 31, 2026, Finance Lease	3,009
Twelve months ending August 31, 2026, Operating leases	534,000
Twelve months ending August 31, 2027, Finance Lease	0
Twelve months ending August 31, 2027, Operating leases	536,230
Twelve months ending August 31, 2028, Finance Lease	0
Twelve months ending August 31, 2028, Operating leases	560,760
Thereafter, Finance Lease	0
Thereafter, Operating leases	5,139,910
Total future minimum lease payments, Finance Lease	52,201
Total future minimum lease payments, Operating leases	7,851,810
Present value discount, Finance Lease	1,683
Present value discount, Operating leases	2,552,837
Present value of minimum lease payments, Finance Lease	50,518	$ 60,485
Present value of minimum lease payments, Operating leases	$ 5,298,973