Note 6 - Leases - Maturities of Lease Liabilities (Details) - USD ($) $ in Thousands	Jan. 31, 2022	Jan. 31, 2021
For the year ended January 31, 2023, operating leases	$ 2,367
For the year ended January 31, 2023, finance leases	386
For the year ended January 31, 2024, operating leases	2,335
For the year ended January 31, 2024, finance leases	177
For the year ended January 31, 2025, operating leases	1,525
For the year ended January 31, 2025, finance leases	0
For the year ended January 31, 2026, operating leases	1,326
For the year ended January 31, 2026, finance leases	0
For the year ended January 31, 2027, operating leases	1,333
For the year ended January 31, 2027, finance leases	0
Thereafter, operating leases	12,322
Thereafter, finance leases	0
Total lease payments, operating leases	21,208
Total lease payments, finance leases	563
Less: amount representing interest, operating leases	(8,442)
Less: amount representing interest, finance leases	(33)
Total lease liabilities, operating leases	12,766	$ 14,576
Total lease liabilities, finance leases	$ 530	$ 701