Goodwill and Acquired Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of the Changes in the Carrying Amount of Goodwill

The changes in the carrying amount of goodwill for the years ended December 31, 2016 and 2015 were as follows (in thousands):

	2016			2015
Beginning balance	$	1,150,244		$	1,051,294
Acquisition of Xerocole, Inc.	—			12,859
Acquisition of Codemate A/S	—			69,445
Acquisition of Bloxx Limited	—			17,694
Acquisition of Concord Systems, Inc.	1,079			—
Acquisition of Soha Systems, Inc.	43,515			—
Acquisition of Cyberfend, Inc.	38,754			—
Foreign currency translation	(5,089		)	(1,048		)
Ending balance	$	1,228,503		$	1,150,244

Schedule of Acquired Intangible Assets

Acquired intangible assets that are subject to amortization consisted of the following as of December 31, 2016 and 2015 (in thousands):

	December 31, 2016							December 31, 2015
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Completed technologies	$	119,091	$	(50,823	)	$	68,268	$	120,791	$	(58,633	)	$	62,158
Customer-related intangible assets	192,810		(114,209		)	78,601		191,710		(102,872		)	88,838
Non-compete agreements	5,030		(3,775		)	1,255		6,540		(3,374		)	3,166
Trademarks and trade names	3,700		(2,361		)	1,339		3,700		(1,767		)	1,933
Acquired license rights	490		(490		)	—		490		(490		)	—
Total	$	321,121	$	(171,658	)	$	149,463	$	323,231	$	(167,136	)	$	156,095

The following were the identified intangible assets acquired and their respective weighted average useful lives (in thousands, except for years):

	Gross Carrying Amount		Weighted Average Useful Life (in years)
Completed technologies	$	26,800	6.9
Customer-related intangible assets	58,500		10.4
Non-compete agreements	940		3.0
Trademark	800		4.9
Total	$	87,040

The following were the identified intangible assets acquired and their respective weighted average useful lives (in thousands, except years):

	Gross Carrying Amount		Weighted Average Useful Life (in years)
Completed technologies	$	25,310	9.8
Customer-related intangible assets	16,560		11.8
Non-compete agreements	80		2.0
Total	$	41,950