|
Shareholders' Equity - Employee Stock Purchase Plan - Additional Information (Detail)
|
12 Months Ended |
|---|---|
|
Feb. 02, 2013
|
|
| Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] | |
| Percentage of discount in purchasing common stock from fair market value under ESPP | 10.00% |
| Purchasing period of stock under ESPP | 6 months |
| Period of service for eligibility in the ESPP | 3 months |