Goodwill and Intangible Assets - Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Intangible assets subject to amortization:
Weighted Average Amortization Period	9 years	9 years
Gross Amount	$ 481,661	$ 478,790
Accumulated Amortization	(290,525)	(277,698)
Intangible Assets, net	191,136	201,092
Intangible assets not subject to amortization:
Goodwill	559,299	561,064
Total goodwill and intangible assets, net	$ 750,435	$ 762,156
Developed Technology [Member]
Intangible assets subject to amortization:
Weighted Average Amortization Period	8 years	8 years
Gross Amount	$ 271,748	$ 271,748
Accumulated Amortization	(171,415)	(163,459)
Intangible Assets, net	$ 100,333	$ 108,289
Manufacturing know-how and trade secrets [Member]
Intangible assets subject to amortization:
Weighted Average Amortization Period	13 years	13 years
Gross Amount	$ 30,783	$ 30,798
Accumulated Amortization	(20,899)	(20,333)
Intangible Assets, net	$ 9,884	$ 10,465
Trade name and trademarks [Member]
Intangible assets subject to amortization:
Weighted Average Amortization Period	9 years	9 years
Gross Amount	$ 25,500	$ 25,500
Accumulated Amortization	(17,696)	(16,947)
Intangible Assets, net	$ 7,804	$ 8,553
Customer relationships [Member]
Intangible assets subject to amortization:
Weighted Average Amortization Period	9 years	9 years
Gross Amount	$ 153,630	$ 150,744
Accumulated Amortization	(80,515)	(76,959)
Intangible Assets, net	$ 73,115	$ 73,785