Note 6 - Leases - Supplemental Balance Sheet Information Related to Leases (Details) - USD ($) $ in Thousands	Jan. 31, 2024	Jan. 31, 2023
Property, plant and equipment	$ 87,493	$ 82,930
Accumulated depreciation and amortization	(49,873)	(56,412)
Property and Equipment - net	37,619	26,518
Total finance lease liabilities	113	164
Operating Lease, Right-of-Use Asset	6,467	4,527
Operating lease liability short-term	914	912
Operating lease liability long-term	6,270	4,252
Total operating lease liabilities	7,184	5,164
Other Current Liabilities [Member]
Finance lease liability short-term	113	164
Operating lease liability short-term	914	912
Long-term Finance Obligation [Member]
Finance lease liability long-term	0	0
Finance Leases Assets [Member]
Property, plant and equipment	970	1,161
Accumulated depreciation and amortization	(536)	(700)
Property and Equipment - net	$ 434	$ 461