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Note 3 - Assets Held for Sale and Discontinued Operations - Held for Sale and Discontinued Operations (Details) - USD ($)
$ in Thousands
3 Months Ended
Apr. 30, 2023
Apr. 30, 2022
Net income from discontinued operations $ 0 $ 386
Discontinued Operations, Held-for-Sale [Member]    
Revenue from discontinued operations 0 0
Cost of discontinued operations 0 25
Selling, general and administrative 0 113
Total operating expenses 0 113
Operating loss 0 (138)
Other income 0 524
Income before income taxes from discontinued operations 0 386
Net income from discontinued operations 0 386
Gross profit from sale of assets held-for-sale 0 (280)
Sale of assets held for sale $ 0 $ 283