Note 4 - Assets Held for Sale and Discontinued Operations - Held for Sale and Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2023	Jul. 31, 2022
Net (loss) income from discontinued operations	$ 0	$ (162)	$ 0	$ 224
Discontinued Operations, Held-for-Sale [Member]
Revenue from discontinued operations	0	0	0	0
Cost of discontinued operations	0	23	0	48
Selling, general and administrative	0	101	0	214
Total operating expenses	0	101	0	214
Operating loss	0	(124)	0	(262)
Other (expense) income	0	(38)	0	486
(Loss) income before income taxes from discontinued operations	0	(162)	0	224
Net (loss) income from discontinued operations	$ 0	$ (162)	0	224
Gross profit from sale of assets held-for-sale			0	(358)
Sale of assets held for sale			$ 0	$ 361