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Note 11 - Leases (Details Textual)
$ in Millions
12 Months Ended
Jan. 31, 2021
USD ($)
Operating Lease, Lease Income, Total $ 0.3
Minimum [Member]  
Lessee, Operating Lease, Renewal Term (Year) 1 year
Lessor, Operating Lease, Renewal Term (Month) 1 month
Maximum [Member]  
Lessee, Operating Lease, Renewal Term (Year) 10 years
Lessor, Operating Lease, Renewal Term (Month) 6 months
Office Space, Equipment, and Automobiles [Member] | Minimum [Member]  
Lessee, Operating Lease, Remaining Lease Term (Month) 2 months
Office Space, Equipment, and Automobiles [Member] | Maximum [Member]  
Lessee, Operating Lease, Remaining Lease Term (Month) 10 years
Assets Leased to Others [Member] | Minimum [Member]  
Lessor, Operating Lease, Term of Contract (Month) 1 month
Assets Leased to Others [Member] | Maximum [Member]  
Lessor, Operating Lease, Term of Contract (Month) 6 months