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Note 6 - Leases - Supplemental Balance Sheet Information Related to Leases (Details) - USD ($)
$ in Thousands
Jan. 31, 2023
Jan. 31, 2022
Property, plant and equipment $ 82,930 $ 79,223
Accumulated depreciation and amortization (56,412) (54,467)
Property, plant and equipment, net of accumulated depreciation 26,518 24,756
Finance lease liability long-term 0 173
Total finance lease liabilities 164 530
Operating Lease, Right-of-Use Asset 4,527 11,213
Operating lease liability short-term 912 1,496
Operating lease liability long-term 4,252 11,270
Total operating lease liabilities 5,164 12,766
Other Current Liabilities [Member]    
Finance lease liability short-term 164 357
Finance Leases Assets [Member]    
Property, plant and equipment 1,161 1,221
Accumulated depreciation and amortization (700) (490)
Property, plant and equipment, net of accumulated depreciation $ 461 $ 731