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Goodwill and Intangible Assets - Schedule of Finite-Lived Intangible Assets (Details) - USD ($)
$ in Thousands
9 Months Ended
Oct. 28, 2018
Jan. 28, 2018
Finite-Lived Intangible Assets [Line Items]    
Gross carrying amount $ 198,961 $ 198,961
Accumulated amortization (160,975) (141,054)
Net carrying amount 37,986 57,907
Core Technologies [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross carrying amount 164,930 164,930
Accumulated amortization (131,250) (115,628)
Net carrying amount $ 33,680 49,302
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 $ 34,031 34,031
Accumulated amortization (29,725) (25,426)
Net carrying amount $ 4,306 $ 8,605
Customer Relationships [Member] | Minimum [Member]    
Finite-Lived Intangible Assets [Line Items]    
Estimated useful life 3 years  
Customer Relationships [Member] | Maximum [Member]    
Finite-Lived Intangible Assets [Line Items]    
Estimated useful life 10 years