Goodwill and Identifiable Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The following table summarizes the activity in the Company’s goodwill balance, as follows (in thousands):

	Total
Balance, December 31, 2016	$	785,032
Goodwill acquired	79,372
Effect of foreign currency translation	64,589
Balance, December 31, 2017	$	928,993

Summary of Acquired Intangible Assets

The Company’s acquired intangible assets are summarized as follows (in thousands):

	As of December 31, 2017							As of December 31, 2016
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Customer relationships	$	73,875	$	(6,800	)	$	67,075	$	21,200	$	(3,220	)	$	17,980
Developed technologies	6,683		(5,411		)	1,272		6,497		(3,891		)	2,606
Trade name and other	14,413		(7,024		)	7,389		12,566		(4,909		)	7,657
Total intangible assets	$	94,971	$	(19,235	)	$	75,736	$	40,263	$	(12,020	)	$	28,243

Weighted-Average Useful Lives of Intangible Assets

The weighted-average useful lives of intangible assets at the time of acquisition were as follows:

	Weighted-Average Useful Lives
Customer relationships	10
Developed technologies	5
Trade name and other	8

Estimated Future Amortization Expense

Estimated future amortization expense related to finite-lived intangible assets at December 31, 2017 is as follows (in thousands):

2018	$	10,096
2019	8,599
2020	8,413
2021	8,311
2022	7,761
Thereafter	32,556
Total	$	75,736