Fair Value Measurements (Details) |
3 Months Ended | 6 Months Ended | ||||
|---|---|---|---|---|---|---|
|
Jul. 29, 2017
USD ($)
|
Apr. 29, 2017
USD ($)
|
Jul. 30, 2016
USD ($)
stores
|
Jul. 29, 2017
USD ($)
stores
|
Jul. 30, 2016
USD ($)
stores
|
Jan. 28, 2017
USD ($)
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||
| Impairment charge | $ 0 | $ 5,500,000 | $ 800,000 | $ 5,479,000 | $ 829,000 | |
| Number of stores impaired during the period | stores | 2 | 17 | 2 | |||
| Level 1 [Member] | Recurring [Member] | ||||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||
| Money market funds | 141,813,000 | $ 141,813,000 | $ 177,551,000 | |||
| Level 2 [Member] | Recurring [Member] | ||||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||
| Money market funds | 0 | 0 | 0 | |||
| Level 3 [Member] | Recurring [Member] | ||||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||
| Money market funds | $ 0 | $ 0 | $ 0 | |||