Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($)	3 Months Ended		9 Months Ended
	Oct. 28, 2016	Oct. 30, 2015	Oct. 28, 2016	Oct. 30, 2015	Jan. 29, 2016
Finite-Lived Intangible Assets [Line Items]
Gross	$ 325,102,000		$ 325,102,000		$ 325,102,000
Accumulated Amortization	(86,365,000)		(86,365,000)		(65,563,000)
Net	238,737,000		238,737,000		259,539,000
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Gross	355,220,000		355,220,000		355,220,000
Accumulated Amortization	(86,365,000)		(86,365,000)		(65,563,000)
Net	268,855,000		268,855,000		289,657,000
Amortization expense	6,900,000	$ 6,900,000	20,800,000	$ 21,400,000
Impairment charges	0		0
Trade name
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	30,118,000		30,118,000		30,118,000
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross	189,518,000		189,518,000		189,518,000
Accumulated Amortization	(45,439,000)		(45,439,000)		(34,869,000)
Net	144,079,000		144,079,000		154,649,000
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Accumulated Amortization	(45,439,000)		(45,439,000)		(34,869,000)
Technology
Finite-Lived Intangible Assets [Line Items]
Gross	135,584,000		135,584,000		135,584,000
Accumulated Amortization	(40,926,000)		(40,926,000)		(30,694,000)
Net	94,658,000		94,658,000		104,890,000
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Accumulated Amortization	$ (40,926,000)		$ (40,926,000)		$ (30,694,000)