Note 10 - Leases (Details Textual) - USD ($)	12 Months Ended
	Jan. 31, 2022	Jan. 31, 2021
Lease, Cost, Total	$ 1,200,000
Short-term Lease, Cost	$ 36,000	$ 20,000
Maximum [Member]
Lessor, Operating Lease, Term of Contract (Year)	1 year