Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2017

Goodwill And Intangible Assets Disclosure [Abstract]

Summary of Acquired Intangible Assets

Information regarding our acquired intangible assets was as follows (in thousands):

	December 31, 2017									December 31, 2016
	GrossCarrying Amount		Accumulated Amortization			Other		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Finite-lived intangible assets:
Developed technology	$	125,889	$	(19,317	)	$	1,847	$	108,419	$	113,361	$	(1,740	)	$	111,621
Trade name		45,275		(10,924	)		261		34,612		43,500		(967	)		42,533
Favorable contracts and leases, net		112,817		(8,639	)		—		104,178		112,817		(864	)		111,953
Other		34,099		(7,775	)		1,137		27,461		26,679		(3,473	)		23,206
Total finite-lived intangible assets		318,080		(46,655	)		3,245		274,670		296,357		(7,044	)		289,313
Indefinite-lived intangible assets:
IPR&D		86,832		—			—		86,832		86,832		—			86,832
Total indefinite-lived    intangible assets		86,832		—			—		86,832		86,832		—			86,832
Total intangible assets	$	404,912	$	(46,655	)	$	3,245	$	361,502	$	383,189	$	(7,044	)	$	376,145

Total Future Amortization Expense for Intangible Assets

Total future amortization expense for intangible assets was estimated as follows (in thousands):

	December 31, 2017
2018	$	46,897
2019		44,706
2020		27,284
2021		27,284
2022		27,282
Thereafter		101,217
Total	$	274,670