Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands |
3 Months Ended | 6 Months Ended | ||
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Aug. 01, 2015 |
Aug. 02, 2014 |
Aug. 01, 2015 |
Aug. 02, 2014 |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Compensation expenses | $ 7,578 | $ 7,603 | ||
| Employee Stock Option [Member] | ||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Number of shares granted | 89 | 320 | ||
| Weighted-average fair value of stock option | $ 44.79 | $ 31.74 | ||
| Compensation expenses | $ 1,908 | $ 2,471 | $ 3,939 | $ 4,604 |
| Unrecognized compensation expense | 32,441 | $ 32,441 | ||
| Restricted Stock [Member] | ||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Number of shares granted | 73 | 68 | ||
| Compensation expenses | 2,328 | $ 1,069 | $ 3,639 | $ 2,999 |
| Unrecognized compensation expense | $ 29,931 | $ 29,931 | ||
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- Definition Unrecognized cost of unvested share-based compensation awards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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 Net number of share options (or share units) granted during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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