Goodwill (Tables)

9 Months Ended

Sep. 30, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in Carrying Amount of Goodwill

Changes in the carrying amount of goodwill were as follows (in thousands):

	Nine Months Ended September 30, 2015									Year Ended December 31, 2014
	CEB			SHL Talent Measurement			Total			CEB			SHL Talent Measurement			Total
Gross goodwill, beginning of period	$	134,723		$	347,984		$	482,707		$	93,719		$	371,656		$	465,375
Goodwill acquired		9,125			—			9,125			43,584			—			43,584
Purchase accounting adjustments		(1,415	)		—			(1,415	)		(2,479	)		—			(2,479	)
Impact of foreign currency		(681	)		(9,929	)		(10,610	)		(101	)		(23,672	)		(23,773	)
Gross goodwill, end of period		141,752			338,055			479,807			134,723			347,984			482,707
Accumulated impairment loss, beginning of period		(41,500	)		—			(41,500	)		(22,600	)		—			(22,600	)
Impairment loss		—			—			—			(18,900	)		—			(18,900	)
Accumulated impairment loss, end of period		(41,500	)		—			(41,500	)		(41,500	)		—			(41,500	)
Net goodwill, end of period	$	100,252		$	338,055		$	438,307		$	93,223		$	347,984		$	441,207