Goodwill and Other Intangible Assets - Amortization of Intangibles (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jul. 01, 2012	Dec. 31, 2012
Finite-Lived Intangible Assets [Abstract]
Finite-Lived Intangible Assets, Amortization Expense	$ 4,098	$ 1,730
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
Expected amortization, remainder of 2013	3,862
Expected amortization, 2014	7,390
Expected amortization, 2015	7,273
Expected amortization, 2016	7,088
Expected amortization, 2017	5,918
Expected amortization thereafter	16,605
Total expected amortization expense	48,136		51,499
Patents, trademarks and other [Member]
Finite-Lived Intangible Assets [Abstract]
Finite-Lived Intangible Assets, Amortization Expense	1,777	894
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
Expected amortization, remainder of 2013	1,668
Expected amortization, 2014	3,001
Expected amortization, 2015	2,884
Expected amortization, 2016	2,699
Expected amortization, 2017	2,143
Expected amortization thereafter	3,443
Total expected amortization expense	15,838		16,304
Customer relationships [Member]
Finite-Lived Intangible Assets [Abstract]
Finite-Lived Intangible Assets, Amortization Expense	1,073	0
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
Expected amortization, remainder of 2013	1,083
Expected amortization, 2014	2,167
Expected amortization, 2015	2,167
Expected amortization, 2016	2,167
Expected amortization, 2017	1,819
Expected amortization thereafter	8,195
Total expected amortization expense	17,598		19,134
Developed technology [Member]
Finite-Lived Intangible Assets [Abstract]
Finite-Lived Intangible Assets, Amortization Expense	1,102	661
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
Expected amortization, remainder of 2013	1,111
Expected amortization, 2014	2,222
Expected amortization, 2015	2,222
Expected amortization, 2016	2,222
Expected amortization, 2017	1,956
Expected amortization thereafter	4,967
Total expected amortization expense	14,700		15,915
Note issuance costs [Member]
Finite-Lived Intangible Assets [Abstract]
Finite-lived intangible assets, useful life	7 years
Finite-Lived Intangible Assets, Amortization Expense	146	175
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
Total expected amortization expense	$ 0		$ 146
Maximum [Member] | Patents, trademarks and other [Member]
Finite-Lived Intangible Assets [Abstract]
Finite-lived intangible assets, useful life	15 years
Maximum [Member] | Customer relationships [Member]
Finite-Lived Intangible Assets [Abstract]
Finite-lived intangible assets, useful life	10 years
Maximum [Member] | Developed technology [Member]
Finite-Lived Intangible Assets [Abstract]
Finite-lived intangible assets, useful life	10 years
Minimum [Member] | Patents, trademarks and other [Member]
Finite-Lived Intangible Assets [Abstract]
Finite-lived intangible assets, useful life	2 years
Minimum [Member] | Customer relationships [Member]
Finite-Lived Intangible Assets [Abstract]
Finite-lived intangible assets, useful life	5 years
Minimum [Member] | Developed technology [Member]
Finite-Lived Intangible Assets [Abstract]
Finite-lived intangible assets, useful life	5 years 6 months