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Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands | 12 Months Ended
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Jan. 31, 2020 | Jan. 31, 2019
Allowance for doubtful accounts |  |
Valuation and Qualifying Accounts Disclosure |  |
Valuation Allowances and Reserves, Beginning Balance | $ 200 | $ 200
Valuation Allowances and Reserves, Charged to (Reduced from) Expenses | 83 | 3
Valuation Allowances and Reserves, Deductions from Reserves | 83 | 3
Valuation Allowances and Reserves, Ending Balance | 200 | 200
Product, general, workers’ compensation and automobile liability reserves |  |
Valuation and Qualifying Accounts Disclosure |  |
Valuation Allowances and Reserves, Beginning Balance | 1,265 | 1,347
Valuation Allowances and Reserves, Charged to (Reduced from) Expenses | 1,520 | 1,357
Valuation Allowances and Reserves, Deductions from Reserves | 1,085 | 1,439
Valuation Allowances and Reserves, Ending Balance | $ 1,700 | $ 1,265

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- Definition Amount of valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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