Goodwill and Acquired Intangibles (Details 1) (USD $)	3 Months Ended
	Mar. 29, 2014	Dec. 28, 2013
Finite-Lived Intangible Assets [Line Items]
In-process Technology Transferred to Existing Technology	$ 0
Acquired intangibles with finite lives, excluding intangibles fully amortized at end of prior fiscal year
Gross carrying amount	420,447,000	448,003,000
Accumulated amortization	(107,521,000)	(139,820,000)
Acquired intangibles, net	312,926,000	308,183,000
In-process technology	3,572,000	3,510,000
Intangible assets, gross (excluding goodwill)	424,019,000	451,513,000
Intangible assets, net (excluding goodwill)	316,498,000	311,693,000
Existing Technology [Member]
Acquired intangibles with finite lives, excluding intangibles fully amortized at end of prior fiscal year
Gross carrying amount	248,836,000	237,624,000
Accumulated amortization	(56,632,000)	(53,243,000)
Acquired intangibles, net	192,204,000	184,381,000
Agreements and relationships [Member]
Acquired intangibles with finite lives, excluding intangibles fully amortized at end of prior fiscal year
Gross carrying amount	161,892,000	170,760,000
Accumulated amortization	(47,679,000)	(53,607,000)
Acquired intangibles, net	114,213,000	117,153,000
Distribution rights [Member]
Acquired intangibles with finite lives, excluding intangibles fully amortized at end of prior fiscal year
Gross carrying amount		30,100,000
Accumulated amortization		(30,100,000)
Acquired intangibles, net		0
Tradenames Trademarks And Patents [Member]
Acquired intangibles with finite lives, excluding intangibles fully amortized at end of prior fiscal year
Gross carrying amount	9,719,000	9,519,000
Accumulated amortization	(3,210,000)	(2,870,000)
Acquired intangibles, net	$ 6,509,000	$ 6,649,000
Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Expected Completion for In-process Technology	6 months
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Expected Completion for In-process Technology	12 months