Goodwill and Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in the carrying amount of goodwill

Changes in the carrying amount of goodwill are as follows:

Balance at January 1, 2013	$	56,493
Goodwill acquired during the period	—
Impairment charges	—
Adjustments to goodwill during the period	482
Balance at December 31, 2013	56,975
Goodwill acquired during the period	—
Impairment charges	—
Adjustments to goodwill during the period	—
Balance at September 30, 2014	$	56,975
Gross goodwill	$	231,219
Accumulated impairment charges	(174,244		)
Balance at September 30, 2014	$	56,975

Summary of intangible assets

Intangible assets consisted of the following:

	December 31, 2013							September 30, 2014
	Gross Carrying Amount		Accumulated Amortization			Intangible Assets, net		Gross Carrying Amount		Accumulated Amortization			Intangible Assets, net
Amortizing intangible assets:
Customer contracts	$	152,629	$	(86,584	)	$	66,045	$	152,889	$	(91,820	)	$	61,069
Other	26,197		(20,868		)	5,329		26,246		(21,545		)	4,701
Total amortizing intangible assets	$	178,826	$	(107,452	)	$	71,374	$	179,135	$	(113,365	)	$	65,770
Intangible assets not subject to amortization						30,427							30,427
Total other intangible assets						$	101,801						$	96,197

Estimated annual amortization expense

Estimated annual amortization expense for the fourth quarter of 2014, and each of the fiscal years ending December 31, is presented below:

2014	$	1,914
2015	7,061
2016	6,059
2017	5,621
2018	5,260
Thereafter	39,855