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Assets Held for Sale and Discontinued Operations - Schedule of Discontinued Operations, Cash Flow (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Oct. 31, 2020
Oct. 31, 2019
Oct. 31, 2020
Oct. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Loss on disposal of discontinued operations     $ 1,859 $ 0
Discontinued Operations, Held-for-sale        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Depreciation and amortization     1,771 3,651
Gross profit from sale of lease pool equipment     (1,326) (987)
Provision for doubtful accounts $ 0 $ 0 470 0
Loss on disposal of discontinued operations $ 0 $ 0 1,859 0
Sale of used lease pool equipment     2,010 1,415
Sale of assets held for sale     734 0
Purchase of seismic equipment held for lease     $ (110) $ (1,938)