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Goodwill and Intangible Assets - Schedule of Finite-Lived Intangible Assets (Details) - USD ($)
$ in Thousands
9 Months Ended
Oct. 29, 2017
Jan. 29, 2017
Finite-Lived Intangible Assets [Line Items]    
Gross carrying amount $ 198,960 $ 174,960
Accumulated amortization (133,600) (113,187)
Net carrying amount 65,360 61,773
Core Technologies [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross carrying amount 164,930 144,930
Accumulated amortization (109,609) (92,940)
Net carrying amount $ 55,321 51,990
Core Technologies [Member] | Minimum [Member]    
Finite-Lived Intangible Assets [Line Items]    
Estimated useful life 5 years  
Core Technologies [Member] | Maximum [Member]    
Finite-Lived Intangible Assets [Line Items]    
Estimated useful life 8 years  
Customer Relationships [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross carrying amount $ 34,030 30,030
Accumulated amortization (23,991) (20,247)
Net carrying amount $ 10,039 $ 9,783
Customer Relationships [Member] | Minimum [Member]    
Finite-Lived Intangible Assets [Line Items]    
Estimated useful life 5 years  
Customer Relationships [Member] | Maximum [Member]    
Finite-Lived Intangible Assets [Line Items]    
Estimated useful life 10 years