Business Combinations (Tables)

3 Months Ended

Mar. 31, 2016

Business Acquisition [Line Items]

Schedule of Goodwill

Changes in the carrying amount of goodwill for the three months ended March 31, 2016 are as follows (in thousands):

	Amount
Balance as of December 31, 2015	$	750,288
Goodwill acquired	223,896
Balance as of March 31, 2016	$	974,184

Schedule of Purchased Intangible Assets

Purchased intangible assets consisted of the following as of the dates below (in thousands):

	As of March 31, 2016			As of December 31, 2015
Developed technology	$	99,793		$	78,193
Content	157,500			128,600
Customer relationships	108,700			75,300
Contract backlog	12,500			12,500
Trade names	15,500			12,400
Non-competition agreements	1,400			—
Total intangible assets subject to amortization	395,393			306,993
Less: accumulated amortization	(107,598		)	(92,433		)
Net intangible assets subject to amortization	287,795			214,560
In-process research and development	2,800			—
Total net intangible assets	$	290,595		$	214,560

Schedule of Expected Annual Amortization Expense of Intangible Assets

The expected annual amortization expense of intangible assets as of March 31, 2016 is presented below (in thousands):

Years Ending December 31,	Amount
2016 (remaining nine months)	$	47,401
2017	57,378
2018	45,694
2019	43,808
2020	30,186
2021 and thereafter	63,328
Total intangible assets subject to amortization	287,795
Total intangible assets with indefinite lives	2,800
Total	$	290,595

iSIGHT Security

Business Acquisition [Line Items]

Schedule of Acquired Finite-Lived Intangible Assets by Major Class [Table Text Block]

The estimated useful life and fair values of the identifiable intangible assets are as follows (in thousands):

	Preliminary Estimated Useful Life (in years)	Amount
Customer relationships	8	$	32,600
Content	4	28,900
Developed technology	4-6	17,100
Trade name	5	3,100
Non-competition agreements	2	1,100
Total identifiable intangible assets		$	82,800

Schedule of Purchase Price Allocation

Allocation of the preliminary purchase price is as follows (in thousands):

	Amount
Net tangible liabilities assumed	$	(18,366	)
Intangible assets	82,800
Deferred tax liability	(10,328		)
Goodwill	202,532
Total preliminary purchase price allocation	$	256,638

Invotas International Corporation

Business Acquisition [Line Items]

Schedule of Purchase Price Allocation

Allocation of the preliminary purchase price is as follows (in thousands):

	Amount
Net tangible liabilities assumed	$	(306	)
Intangible assets	8,400
Deferred tax liability	(703		)
Goodwill	21,364
Total preliminary purchase price allocation	$	28,755

Schedule of Estimated Useful Life and Fair Values of the Identifiable Intangible Assets

The estimated useful life and fair values of the identifiable intangible assets are as follows (in thousands):

	Preliminary Estimated Useful Life (in years)	Amount
Developed technology	4	$	4,500
In-process research and development	N/A	2,800
Customer relationships	10	800
Non-competition agreements	3	300
Total identifiable intangible assets		$	8,400