Rollforward of Liabilities Recognized in Consolidated Balance Sheets (Detail) - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Jan. 28, 2017 |
Jan. 30, 2016 |
Jan. 31, 2015 |
|
| Restructuring And Related Activities [Abstract] | |||
| Accrued liability as of January 31, 2015 | $ 2,441,000 | ||
| Add: Costs incurred, excluding non-cash charges | 590,000 | $ 0 | $ 17,752,000 |
| Less: Cash payments and adjustments | (1,856,000) | ||
| Accrued liability as of January 30, 2016 | $ 1,175,000 | $ 2,441,000 | |