Goodwill and Intangible Assets (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Intangible Assets Subject to Amortization:
Weighted Average Amortization Period	10 years	10 years
Gross Amount	$ 137,696	$ 137,696
Accumulated Amortization	(58,743)	(54,350)
Intangible Assets, net	78,953	83,346
Intangible Assets Not Subject to Amortization:
In-process research and development	10,640	10,640
Goodwill	154,650	154,944
Total intangible assets, net	244,243	248,930
Developed technology [Member]
Intangible Assets Subject to Amortization:
Weighted Average Amortization Period	10 years	10 years
Gross Amount	62,328	62,328
Accumulated Amortization	(23,142)	(21,359)
Intangible Assets, net	39,186	40,969
Manufacturing know-how and trade secrets [Member]
Intangible Assets Subject to Amortization:
Weighted Average Amortization Period	12 years	12 years
Gross Amount	21,997	21,997
Accumulated Amortization	(10,352)	(9,890)
Intangible Assets, net	11,645	12,107
Trade name and trademarks [Member]
Intangible Assets Subject to Amortization:
Weighted Average Amortization Period	11 years	11 years
Gross Amount	9,500	9,500
Accumulated Amortization	(3,564)	(3,317)
Intangible Assets, net	5,936	6,183
Customer relationships [Member]
Intangible Assets Subject to Amortization:
Weighted Average Amortization Period	8 years	8 years
Gross Amount	43,871	43,871
Accumulated Amortization	(21,685)	(19,784)
Intangible Assets, net	$ 22,186	$ 24,087