Goodwill and Other Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2017

Goodwill And Intangible Assets Disclosure [Abstract]

Summary of Changes in Carrying Amounts of Goodwill by Operating Segment

The table below summarizes the changes in the carrying amount of goodwill by reportable segment:  

	Corporate		Forensicand
	Finance &		Litigation		Economic				Strategic
	Restructuring		Consulting		Consulting		Technology		Communications			Total
Balance at December 31, 2016
Goodwill	$	440,666	$	230,544	$	268,209	$	117,607	$	317,114		$	1,374,140
Accumulated goodwill impairment		—		—		—		—		(194,139	)		(194,139	)
Goodwill, net at December 31, 2016		440,666		230,544		268,209		117,607		122,975			1,180,001
Foreign currency translation adjustment and    other		1,500		1,817		454		74		3,818			7,663
Balance at June 30, 2017
Goodwill		442,166		232,361		268,663		117,681		320,932			1,381,803
Accumulated goodwill impairment		—		—		—		—		(194,139	)		(194,139	)
Goodwill, net at June 30, 2017	$	442,166	$	232,361	$	268,663	$	117,681	$	126,793		$	1,187,664

Schedule of Estimated Future Amortization Expense

We estimate our future amortization expense for our intangible assets with finite lives to be as follows:

Year	As of June 30, 2017(1)
2017 (remaining)	$	4,724
2018		8,087
2019		7,434
2020		7,272
2021		6,686
Thereafter		8,409
	$	42,612

(1) Actual amortization expense to be reported in future periods could differ from these estimates as a result of new intangible asset acquisitions, changes in useful lives or other relevant factors or changes.