Goodwill and Other Intangible Assets, Net (Tables)

12 Months Ended

Dec. 31, 2017

Goodwill And Intangible Assets Disclosure [Abstract]

Changes in Carrying Amount of Goodwill by Operating Segment

A summary of changes in the carrying amount of goodwill by operating segment for the years ended December 31, 2017 and 2016 were as follows (in thousands): 

	Financial Services		Benefits and Insurance Services		National Practices		Total Goodwill
December 31, 2015	$	267,485	$	178,534	$	1,666	$	447,685
Additions		3,845		35,954		—		39,799
December 31, 2016	$	271,330	$	214,488	$	1,666	$	487,484
Additions		35,531		5,409		—		40,940
December 31, 2017	$	306,861	$	219,897	$	1,666	$	528,424

Components of Goodwill and Other Intangible Assets, Net

The components of goodwill and other intangible assets, net at December 31, 2017 and 2016 were as follows (in thousands):

	2017			2016
Goodwill	$	528,424		$	487,484
Intangibles :
Client lists		177,221			172,343
Other intangibles		8,767			7,994
Total intangibles		185,988			180,337
Total goodwill and other intangibles assets		714,412			667,821
Accumulated amortization:
Client lists		(97,063	)		(80,560	)
Other intangibles		(4,143	)		(2,860	)
Total accumulated amortization		(101,206	)		(83,420	)
Goodwill and other intangible assets, net	$	613,206		$	584,401