XML 93 R76.htm IDEA: XBRL DOCUMENT v3.7.0.1
Goodwill and Acquired Intangible Assets, Net - Acquired Intangible Assets Net (Details) - USD ($)
$ in Thousands
12 Months Ended
Jan. 28, 2017
Jan. 30, 2016
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amounts $ 50,498 $ 50,498
Accumulated Amortization and Write-Offs (46,927) (38,551)
Net Carrying Amounts 3,571 11,947
Purchased and core technology    
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amounts 25,798 25,798
Accumulated Amortization and Write-Offs (22,227) (17,950)
Net Carrying Amounts $ 3,571 7,848
Purchased and core technology | Minimum    
Acquired Finite-Lived Intangible Assets [Line Items]    
Range of Useful Lives 4 years  
Purchased and core technology | Maximum    
Acquired Finite-Lived Intangible Assets [Line Items]    
Range of Useful Lives 8 years  
Customer intangibles    
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amounts $ 24,700 24,700
Accumulated Amortization and Write-Offs (24,700) (20,601)
Net Carrying Amounts $ 0 $ 4,099
Customer intangibles | Minimum    
Acquired Finite-Lived Intangible Assets [Line Items]    
Range of Useful Lives 5 years  
Customer intangibles | Maximum    
Acquired Finite-Lived Intangible Assets [Line Items]    
Range of Useful Lives 7 years