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Schedule II - Valuation and Qualifying Accounts (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jan. 31, 2020 | Jan. 31, 2019 | Jan. 31, 2018
Allowance for doubtful accounts |  |  |
Allowance for Doubtful Accounts and Allowance for Obsolete Equipment and Inventory [Roll Forward] |  |  |
Balance at Beginning of Period | $ 2,113 | $ 6,167 | $ 5,904
Charged to Costs and Expenses | 2,000 | 212 | 1,027
Charged to Other Accounts | 0 | 0 | (23)
Deductions Describe | (59) | (4,266) | (741)
Balance at End of Period | 4,054 | 2,113 | 6,167
Allowance for obsolete equipment and inventory |  |  |
Allowance for Doubtful Accounts and Allowance for Obsolete Equipment and Inventory [Roll Forward] |  |  |
Balance at Beginning of Period | 1,222 | 1,675 | 952
Charged to Costs and Expenses | 298 | 132 | 989
Charged to Other Accounts | 1 | (32) | 20
Deductions Describe | (117) | (553) | (286)
Balance at End of Period | $ 1,404 | $ 1,222 | $ 1,675

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- Definition Valuation allowances and reserves charged to cost and expense increase decrease. + References No definition available. + Details
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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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