Note 11 - Leases - Lease Costs (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jul. 31, 2024	Jul. 31, 2023	Jul. 31, 2024	Jul. 31, 2023
Amortization of ROU assets		$ 37	$ 33	$ 75	$ 87
Interest on lease liabilities		2	3	3	5
Operating lease costs		438	426	893	882
Short-term lease costs (1)	[1]	93	59	236	245
Sub-lease income		0	(20)	0	(40)
Total Lease costs		$ 570	$ 501	$ 1,207	$ 1,179

[1] Includes variable lease costs, which are not material.