Goodwill and Other Intangible Assets, Net (Tables)

12 Months Ended

Dec. 31, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Components of Goodwill and Other Intangible Assets, Net

The components of goodwill and other intangible assets, net at December 31, 2014 and 2013 were as follows (in thousands):


	2014			2013
Goodwill	$	435,231		$	384,697
Intangibles:
Client lists		140,187			132,637
Other intangibles		6,482			2,355

Total intangibles		146,669			134,992

Total goodwill and other intangibles assets		581,900			519,689
Accumulated amortization:
Client lists		(54,213	)		(51,016	)
Other intangibles		(1,225	)		(1,025	)

Total accumulated amortization		(55,438	)		(52,041	)

Goodwill and other intangible assets, net	$	526,462		$	467,648

Changes in Carrying Amount of Goodwill by Operating Segment

Changes in the carrying amount of goodwill by operating segment for the years ended December 31, 2014 and 2013 were as follows (in thousands):


	Financial Services			Employee Services		National Practices		Total Goodwill
December 31, 2012	$	259,038		$	114,418	$	1,666	$	375,122
Additions		1,677			7,898		—		9,575

December 31, 2013	$	260,715		$	122,316	$	1,666	$	384,697
Additions		9,452			42,619		—		52,071
Divestitures		(1,537	)		—		—		(1,537	)

December 31, 2014	$	268,630		$	164,935	$	1,666	$	435,231

Amortization Expense Related to Client Lists and Other Intangible Assets

Amortization expense related to client lists and other intangible assets for the years ended December 31, 2014, 2013 and 2012 was as follows (in thousands):


	2014		2013		2012
Operating expenses	$	14,462	$	13,520	$	11,443
Corporate general and administrative expenses		16		15		16

Total amortization expense	$	14,478	$	13,535	$	11,459

Amortization Expense for Existing Client Lists and Other Intangible Assets

Amortization expense for existing client lists and other intangible assets for each of the next five years ending December 31 is estimated to be (in thousands):


2015	$	14,009
2016	$	13,346
2017	$	12,885
2018	$	12,033
2019	$	8,162