Note 10 - Leases - Maturities of Lease Liabilities (Details) - USD ($) $ in Thousands	Apr. 30, 2022	Jan. 31, 2022
For the nine months ended January 31, 2023, operating leases	$ 1,991
For the nine months ended January 31, 2023, finance leases	281
For the year ended January 31, 2023, operating leases	1,761
For the year ended January 31, 2023, finance leases	175
For the year ended January 31, 2024, operating leases	935
For the year ended January 31, 2024, finance leases	0
For the year ended January 31, 2025, operating leases	725
For the year ended January 31, 2025, finance leases	0
For the year ended January 31, 2026, operating leases	725
For the year ended January 31, 2026, finance leases	0
For the year ended January 31, 2027, operating leases	689
For the year ended January 31, 2027, finance leases	0
Thereafter, operating leases	8,975
Thereafter, finance leases	0
Total lease payments, operating leases	15,801
Total lease payments, finance leases	456
Less: amount representing interest, operating leases	(7,232)
Less: amount representing interest, finance leases	(20)
Total lease liabilities, operating leases	8,569	$ 12,766
Total lease liabilities, finance leases	$ 436	$ 530