Note 6 - Leases - Lease Costs (Details) - USD ($) $ in Thousands		3 Months Ended	12 Months Ended
		Jan. 31, 2024	Jan. 31, 2024
Amortization of ROU assets		$ 162	$ 233
Interest on lease liabilities		9	28
Operating lease costs		1,888	1,388
Short-term lease costs (1)	[1]	530	421
Sub-lease income		(61)	(81)
Total Lease costs		$ 2,528	$ 1,989

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