Composition of certain financial statement captions - Schedule of accounts receivable (Detail) - USD ($) $ in Thousands |
Jan. 31, 2021 |
Jan. 31, 2020 |
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Accounts receivable, gross | $ 29,751 | $ 22,921 |
| Less accounts receivable allowances | (699) | (943) |
| Total accounts receivable | 29,052 | 21,978 |
| Billed | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Accounts receivable, gross | 28,464 | 22,245 |
| Unbilled | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Accounts receivable, gross | $ 1,287 | $ 676 |
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of allowance for credit loss on accounts receivable, classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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