Assets - Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2018	Sep. 30, 2018	Dec. 31, 2017
Intangible assets
Impairment charges, Definite-lived intangible assets	$ 216,400
Net Amount, Definite-lived intangible assets		$ 84,358
Total Gross Intangible Assets		550,119	$ 550,119
Accumulated Amortization and Impairment		460,721	180,276
Total Net Intangible Assets		89,398	369,843
In-process research and development
Intangible assets
Impairment charges, Indefinite-lived intangible assets	$ 35,900
Gross Carrying Amount, Indefinite-lived intangible assets		30,040	43,340
Accumulated Amortization and Impairment, Indefinite-lived intangible assets		25,000
Net Amount, Indefinite-lived intangible assets		5,040	43,340
Technology
Intangible assets
Gross Carrying Amount, Definite-lived intangible assets		320,888	307,588
Accumulated Amortization and Impairment, Definite-lived intangible assets		273,821	133,121
Net Amount, Definite-lived intangible assets		47,067	174,467
Customer relationship
Intangible assets
Gross Carrying Amount, Definite-lived intangible assets		164,595	164,595
Accumulated Amortization and Impairment, Definite-lived intangible assets		134,760	39,336
Net Amount, Definite-lived intangible assets		29,835	125,259
Trademarks and tradenames
Intangible assets
Gross Carrying Amount, Definite-lived intangible assets		30,910	30,910
Accumulated Amortization and Impairment, Definite-lived intangible assets		23,560	4,321
Net Amount, Definite-lived intangible assets		7,350	26,589
Other Intangible Assets
Intangible assets
Gross Carrying Amount, Definite-lived intangible assets		3,686	3,686
Accumulated Amortization and Impairment, Definite-lived intangible assets		3,580	3,498
Net Amount, Definite-lived intangible assets		$ 106	$ 188