Commitments and Contingencies - Additional Information (Detail) - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Jan. 31, 2017 |
Jan. 31, 2016 |
Jan. 31, 2015 |
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| Contingencies And Commitments [Line Items] | |||
| Operating leases, rent expense | $ 2,400,000 | $ 2,700,000 | $ 2,900,000 |
| Operating lease expiration year | 2023 | ||
| Demand Debt Instrument [Member] | |||
| Contingencies And Commitments [Line Items] | |||
| Demand notes payable | $ 20,000,000 | ||
| Line of credit expiration date | Aug. 31, 2016 | ||
| Demand notes payable, amount outstanding | $ 0 | ||
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- Definition Contingencies and Commitments [Line Items] No definition available.
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- Definition Operating lease expiration year. No definition available.
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- Definition Date the credit facility terminates, in CCYY-MM-DD format. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Maximum amount borrowed under the credit facility at any time during the period. No definition available.
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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