Summary of Significant Accounting Policies (Details) $ in Thousands			3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018 USD ($)	Dec. 31, 2017 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2018 USD ($) Segment	Sep. 30, 2017 USD ($)	Dec. 31, 2017 USD ($)	Jan. 01, 2018 USD ($)
Summary of Significant Accounting Policies [Line Items]
Provision for inventory obsolescence					$ 1,500	$ 5,000
Goodwill, in-process research and development and other intangible assets acquired	$ 2,000,000	$ 2,000,000	$ 2,000,000		2,000,000		$ 2,000,000
Amortization expense			16,899	$ 18,023	51,397	53,904
Depreciation expense					22,000	22,700
Allowance for doubtful accounts receivable	1,745	1,446	1,745		1,745		1,446
Provision related to current period sales					600	700
Equity-based compensation expense					$ 16,600	22,300
Number of reportable segments | Segment					2
Increase (decrease) in revenue from transfer of intellectual property and other			249,815	246,040	$ 768,412	805,022
Accumulated deficit	$ 1,109,049	$ 1,036,959	1,109,049		1,109,049		1,036,959
Increase in contract liabilities					$ (50,531)	(49,771)
Minimum
Summary of Significant Accounting Policies [Line Items]
Intangible assets, estimated useful lives					3 years
Maximum
Summary of Significant Accounting Policies [Line Items]
Intangible assets, estimated useful lives					20 years
Government Contracts Concentration Risk | Accounts Receivable
Summary of Significant Accounting Policies [Line Items]
Concentration percentage	15.20%	15.80%
Customer Concentration Risk | Accounts Receivable
Summary of Significant Accounting Policies [Line Items]
Concentration percentage	3.20%	3.20%
Software
Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives					3 years
Machinery, Medical and Other Equipment | Minimum
Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives					5 years
Machinery, Medical and Other Equipment | Maximum
Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives					8 years
Furniture and Fixtures | Minimum
Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives					5 years
Furniture and Fixtures | Maximum
Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives					12 years
Buildings and Improvements | Minimum
Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives					10 years
Buildings and Improvements | Maximum
Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives					40 years
Automobiles and Aircraft | Minimum
Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives					3 years
Automobiles and Aircraft | Maximum
Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives					5 years
Accumulated Deficit | Accounting Standards Update 2016-01
Summary of Significant Accounting Policies [Line Items]
Cumulative effect of new accounting update								$ 4,900
Effect of change | Accounting Standards Update 2014-09
Summary of Significant Accounting Policies [Line Items]
Increase (decrease) in revenue from transfer of intellectual property and other							(29,800)
Accumulated deficit		$ 29,800					29,800
Increase in contract liabilities						(7,629)	$ 29,800
Transfer of intellectual property and other
Summary of Significant Accounting Policies [Line Items]
Increase (decrease) in revenue from transfer of intellectual property and other			$ 21,609	22,369	$ 56,463	67,697
Transfer of intellectual property and other | Effect of change | Accounting Standards Update 2014-09
Summary of Significant Accounting Policies [Line Items]
Increase (decrease) in revenue from transfer of intellectual property and other				$ 10,704		8,878
Transferred over Time | Transfer of intellectual property and other | Effect of change | Accounting Standards Update 2014-09
Summary of Significant Accounting Policies [Line Items]
Increase (decrease) in revenue from transfer of intellectual property and other						$ 7,600