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COMMITMENTS - Leases (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Apr. 30, 2021 | Apr. 30, 2020
Operating leases, options to extend | true |
Operating leases, options to terminate | true |
Operating lease expense | $ 776 | $ 379
Operating lease payments | $ 800 | 400
Weighted average lease term | 32 months |
Weighted average discount rate | 3.00% |
Future minimum lease payment | $ 500 | 400
Unsatisfied bonded performance obligations | 372,000 |
Bonds outstanding, covering other risks | 6,600 |
Warranty bond | $ 4,200 |
London Interbank Offered Rate (LIBOR) |  |
Interest rate margin on referred rate | 2.00% |
TRC |  |
April 30, 2022 | $ 300 |
GPS | Financial guarantee |  |
Guarantor obligation maximum exposure | 3,600 |
Costs of Revenues |  |
Rent expense | 3,000 | 600
Selling, General and Administrative Expenses |  |
Rent expense | $ 200 | $ 200

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- Definition Indicates (true false) whether lessee has option to extend operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980 + Details
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- Definition Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=77888399&loc=SL77918982-209971 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(3) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980 + Details
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