Goodwill and Intangible Assets - Schedule of Finite-lived Intangible Asset Impairment (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 25, 2015	Jan. 26, 2014	Jan. 27, 2013
Schedule of Finite-Lived Intangible Asset Impairment Losses [Line Items]
Impairment of finite-lived intangible assets	$ 14,755	$ 32,292	$ 700
Product development and engineering
Schedule of Finite-Lived Intangible Asset Impairment Losses [Line Items]
Impairment of finite-lived intangible assets	3,119	2,354	0
Intangible asset impairments
Schedule of Finite-Lived Intangible Asset Impairment Losses [Line Items]
Impairment of finite-lived intangible assets	$ 11,636	$ 29,938	$ 700