Equity-Based Compensation - Transactions Related to Restricted Shares and RSU's (Detail) - Restricted Stock Units (RSU's) and Restricted Stock [Member] |
3 Months Ended |
|---|---|
|
May. 01, 2016
$ / shares
shares
| |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
| Restricted Stock Awards, January 31, 2016 | shares | 70,534 |
| Restricted Stock Awards, Granted | shares | 71,222 |
| Restricted Stock Awards, Vested | shares | (10,799) |
| Restricted Stock Awards, May 1, 2016 | shares | 130,957 |
| Weighted Average Fair Value, January 31, 2016 | $ / shares | $ 31.75 |
| Weighted Average Fair Value, Granted | $ / shares | 39.15 |
| Weighted Average Fair Value, Vested | $ / shares | 31.94 |
| Weighted Average Fair Value, May 1, 2016 | $ / shares | $ 35.76 |