Note 7 - Leases - Future Payments Due (Details)	Jan. 31, 2022 USD ($)
2022, operating	$ 325,201	[1]
2022, finance	32,151
2023, operating	382,716
2023, finance	42,868
2024, operating	331,438
2024, finance	42,868
2025, operating	55,023
2025, finance	42,868
2026, operating	0
2026, finance	55,715
Total undiscounted operating lease payments	1,094,378
Total undiscounted finance lease payments	216,470
Present value discount, operating	(72,881)
Present value discount, finance	(24,132)
Accounts Payable and Accrued Liabilities and Noncurrent Liabilities [Member]
Total lease liability, operating	1,021,497
Total lease liability, finance	$ 192,338

[1] (1) Remaining nine months of fiscal year 2022