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Assets Held for Sale and Discontinued Operations - Schedule of Discontinued Operations, Cash Flow (Details) - USD ($) $ in Thousands | 12 Months Ended
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Jan. 31, 2021 | Jan. 31, 2020
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 | 1,830 | 4,818
Gross profit from sale of lease pool equipment | (1,326) | (1,145)
Provision for doubtful accounts | 470 | 2,000
Loss on disposal of discontinued operations | 1,859 | 0
Sale of used lease pool equipment | 2,010 | 1,415
Sale of assets held for sale | 1,506 | 0
Purchase of seismic equipment held for lease | $ (110) | $ (2,955)

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- Definition Disposal Group, Including Discontinued Operations, Payments To Acquire Seismic Equipment Held For Lease + References No definition available. + Details
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- Definition Disposal Group, Including Discontinued Operations, Proceeds From Sale Of Assets Held For Sale + References No definition available. + Details
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- Definition Amount of deprecation and amortization expense attributable to property, plant and equipment and intangible assets of discontinued operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5B -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721673-107760 + Details
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