Share-Based Compensation - Additional Information (Detail) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | |
|---|---|---|---|
Jul. 30, 2016 |
Jul. 30, 2016 |
Jan. 30, 2016 |
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
| Stock-based compensation capitalized in inventory | $ 1.4 | $ 1.4 | $ 1.5 |
| Reversal of previously recognized share-based compensation expense | $ 6.9 | ||
| Stock purchase rights granted | 1,965,000 | ||
| Employee Stock Option | |||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
| Stock purchase rights granted | 0 | 0 |