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Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
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Nov. 01, 2014
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Nov. 02, 2013
|
Nov. 01, 2014
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Nov. 02, 2013
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Compensation expenses | $ 11,436 | $ 11,936 | ||
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Employee Stock Option [Member]
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Number of shares granted | 362 | 286 | ||
| Weighted average fair value of stock option | $ 32.22 | $ 36.77 | ||
| Compensation expenses | 2,386 | 2,167 | 6,990 | 7,804 |
| Unrecognized compensation expense | 19,286 | 19,286 | ||
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Restricted Stock [Member]
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Number of shares granted | 70 | 139 | ||
| Compensation expenses | 1,447 | 2,230 | 4,446 | 4,132 |
| Unrecognized compensation expense | $ 9,526 | $ 9,526 | ||