Note 11 - Leases - Supplemental Balance Sheet Information Related to Leases (Details) - USD ($) $ in Thousands	Jul. 31, 2024	Apr. 30, 2024	Jan. 31, 2024
Property and Equipment - net	$ 36,457	$ 36,788	$ 37,620
Finance lease liability short-term	32		113
Finance lease liability long-term	62		0
Total finance lease liabilities	94		113
Operating Lease, Right-of-Use Asset	6,938		6,467
Operating lease liability short-term	965		914
Operating lease liability long-term	6,689		6,270
Total operating lease liabilities	7,654		7,184
Finance Leases Assets [Member]
Property and Equipment - gross	942		970
Accumulated depreciation and amortization	(595)		(536)
Property and Equipment - net	$ 347		$ 434