Note 11 - Leases - Lease Costs (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2024	Oct. 31, 2023
Amortization of ROU assets		$ 25	$ 37	$ 100	$ 121
Interest on lease liabilities		1	3	5	7
Operating lease costs		463	564	1,361	1,450
Short-term lease costs (1)	[1]	151	99	384	350
Sub-lease income		0	(20)	0	(61)
Total Lease costs		$ 640	$ 683	$ 1,850	$ 1,867

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