Fair Value Measurements (Details 2) - USD ($) $ in Thousands |
Jan. 30, 2016 |
Jan. 31, 2015 |
Feb. 01, 2014 |
|---|---|---|---|
| Amortized Cost | |||
| Mature in one year or less | $ 32,671 | $ 15,850 | |
| Mature after one year through five years | 30,890 | 22,447 | |
| Total | 63,561 | 38,297 | |
| Fair Market Value | |||
| Mature in one year or less | 32,675 | 15,859 | |
| Mature after one year through five years | 30,916 | 22,471 | |
| Total Fair Market Value | 63,591 | 38,330 | |
| Changes among the fair value levels | |||
| Changes between Level 1 to Level 2, Assets | 0 | 0 | $ 0 |
| Changes between Level 2 to Level 1, Assets | 0 | 0 | 0 |
| Changes between Level 1 to Level 2, Liabilities | 0 | 0 | 0 |
| Changes between Level 2 to Level 1, Liabilities | $ 0 | $ 0 | $ 0 |