Goodwill and Other Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2016

Goodwill And Intangible Assets Disclosure [Abstract]

Schedule of Changes in Carrying Amounts of Goodwill by Operating Segment

Goodwill

The changes in the carrying amounts of goodwill by operating segment for the six months ended June 30, 2016, are as follows:

	Corporate		Forensicand
	Finance &		Litigation			Economic						Strategic
	Restructuring		Consulting			Consulting			Technology			Communications			Total
Balance at December 31, 2015
Goodwill		441,548		235,211			269,341			117,888			328,449			1,392,437
Accumulated goodwill impairment		—		—			—			—			(194,139	)		(194,139	)
Goodwill, net at December 31, 2015	$	441,548	$	235,211		$	269,341		$	117,888		$	134,310		$	1,198,298
Foreign currency translation adjustment and    other		435		(2,255	)		(565	)		(159	)		(6,152	)		(8,696	)
Goodwill		441,983		232,956			268,776			117,729			322,297			1,383,741
Accumulated goodwill impairment		—		—			—			—			(194,139	)		(194,139	)
Goodwill, net at June 30, 2016	$	441,983	$	232,956		$	268,776		$	117,729		$	128,158		$	1,189,602