Note 1 - Business Information - Geographic Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023
Net sales	$ 150,668	$ 142,569
Property, plant and equipment, net of accumulated depreciation	37,619	26,518
UNITED STATES
Net sales	51,893	51,557
Property, plant and equipment, net of accumulated depreciation	5,600	5,920
CANADA
Net sales	31,351	36,482
Property, plant and equipment, net of accumulated depreciation	10,775	9,290
Middle East/ North Africa [Member]
Net sales	63,880	53,742
Property, plant and equipment, net of accumulated depreciation	21,244	11,308
Europe [Member]
Net sales	559	456
Other Geographical Area [Member]
Net sales	$ 2,985	$ 332