Goodwill and Acquired Intangible Assets, Net - Acquired Intangible Assets Net (Details) - Purchased and core technology - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Feb. 03, 2018 |
Jan. 28, 2017 |
|
| Acquired Finite-Lived Intangible Assets [Line Items] | ||
| Gross Carrying Amounts | $ 25,798 | $ 25,798 |
| Accumulated Amortization and Write-Offs | (25,798) | (22,227) |
| Net Carrying Amounts | $ 0 | $ 3,571 |
| Minimum | ||
| Acquired Finite-Lived Intangible Assets [Line Items] | ||
| Range of Useful Lives | 4 years | |
| Maximum | ||
| Acquired Finite-Lived Intangible Assets [Line Items] | ||
| Range of Useful Lives | 8 years |