Goodwill and Other Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2016

Goodwill And Intangible Assets Disclosure [Abstract]

Summary of Changes in Carrying Amount of Goodwill by Reportable Segment

The following table presents the changes in the carrying amount of goodwill by reportable segment for the year ended December 31, 2015 and the nine months ended September 30, 2016:

(Amounts in thousands)	Unified Communications Services			Safety Services		Interactive Services			Specialized Agent Services			Total
Balance at January 1, 2015	$	864,568		$	507,588	$	223,014		$	289,750		$	1,884,920
Acquisitions		24,579			—		23,221			—			47,800
Acquisition accounting adjustments		—			1,091		(44	)		(1,400	)		(353	)
Foreign currency translation adjustments		(15,365	)		—		(1,312	)		—			(16,677	)
Balance at December 31, 2015		873,782			508,679		244,879			288,350			1,915,690
Acquisitions		—			—		4,907			—			4,907
Acquisition accounting adjustments		257			—		(13	)		—			244
Foreign currency translation adjustments		(711	)		—		612			—			(99	)
Balance at September 30, 2016	$	873,328		$	508,679	$	250,385		$	288,350		$	1,920,742

Summary of Major Intangible Assets

Below is a summary of the major intangible assets for each identifiable intangible asset:

	As of  September 30, 2016
(Amounts in Thousands)	Acquired Cost		Accumulated Amortization			Net Intangible Assets
Client Relationships	$	654,892	$	(472,926	)	$	181,966
Technology & Patents		178,951		(107,634	)		71,317
Trade names and trademarks		103,437		(36,071	)		67,366
Other intangible assets		23,274		(18,661	)		4,613
Total	$	960,554	$	(635,292	)	$	325,262

	As of  December 31, 2015
	Acquired Cost		Accumulated Amortization			Net Intangible Assets
Client Relationships	$	649,494	$	(440,163	)	$	209,331
Technology & Patents		178,027		(96,774	)		81,253
Trade names and trademarks (finite-lived)		103,398		(30,470	)		72,928
Other intangible assets		22,725		(16,216	)		6,509
Total	$	953,644	$	(583,623	)	$	370,021

Summary of Estimated Future Annual Amortization Expense for Intangible Assets

Estimated amortization expense for the intangible assets noted above for 2016 and the next five years is as follows:

2016	$ 65.9 million
2017	$ 55.5 million
2018	$ 48.7 million
2019	$ 42.7 million
2020	$ 36.0 million
2021	$ 28.2 million