Goodwill and Intangible Assets (Details Textual) (USD $)	3 Months Ended		9 Months Ended			3 Months Ended
	Sep. 29, 2013	Sep. 30, 2012	Sep. 29, 2013	Sep. 30, 2012	Dec. 30, 2012	Sep. 29, 2013 Pliant Technology Inc. [Member]	Aug. 22, 2013 SMART Storage Systems (Global Holdings), Inc. [Member]	Sep. 29, 2013 Developed product technology [Member] Pliant Technology Inc. [Member]
Goodwill and Finited-lived Intangible Assets
Adjustment			$ 601,000
Business Combinations
Acquisition			115,775,000
Effective date of acquisition agreement	Aug. 22, 2013
Business Acquisition, Description of Acquired Entity	a developer of enterprise solid state drives
Business Combination, Reason for Business Combination	The Company expects this acquisition to enhance its enterprise storage product portfolio.
Business Acquisition, Name of Acquired Entity	SMART Storage Systems
Indefinite-Lived Intangible Assets (Excluding Goodwill)
Indefinite-Lived Intangible Assets (Excluding Goodwill)							168,500,000
Impairment of Intangible Assets, Finite-lived						47,000,000
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)						36,200,000
Impairment of acquisition-related intangible assets	83,228,000	0	83,228,000	0		83,200,000
Intangible Assets, Net (Excluding Goodwill)	$ 275,141,000		$ 275,141,000		$ 246,919,000			$ 41,400,000
Finite-Lived Intangible Asset, Useful Life (months)						1 year 4 months