Note 2 - Sale of a Subsidiary and Discontinued Operations - Held for Sale and Discontinued Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2025	Jan. 31, 2024
Revenue from discontinued operations	$ 0	$ 3,315
Cost of discontinued operations	0	1,979
Selling, general and administrative	0	2,022
Depreciation and amortization	0	338
Total operating expenses	0	2,360
Operating loss	0	(1,024)
Other income, including $2.3 million gain on sale of Klein	0	2,415
Income before income taxes from discontinued operations	0	1,391
Provision for income taxes from discontinued operations	0	(17)
Net income from discontinued operations	0	1,374
Depreciation and amortization	0	338
Discontinued Operations [Member]
Gain (Loss) on Disposition of Business	$ 0	$ 2,343