|
Fair Value Measurements (Details) (USD $)
In Thousands, unless otherwise specified
|
3 Months Ended |
|
|
May 02, 2015
|
May 03, 2014
stores
|
Jan. 31, 2015
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
|
| Impairment charge |
$ 0 |
$ 785 |
|
| Number of stores impaired during the period |
|
4 |
|
| Level 1 [Member] | Recurring [Member] |
|
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
|
| U.S. treasury securities money market funds |
2,796 |
|
166,602 |
| Level 2 [Member] | Recurring [Member] |
|
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
|
| U.S. treasury securities money market funds |
0 |
|
0 |
| Level 3 [Member] | Recurring [Member] |
|
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
|
| U.S. treasury securities money market funds |
$ 0 |
|
$ 0 |