Segment Reporting (Tables)

12 Months Ended

Dec. 31, 2018

Segment Reporting [Abstract]

Schedule of Revenues and Adjusted Segment Earnings before Interest, Taxes, Depreciation and Amortization for Reportable Segments

The table below presents revenues and Adjusted Segment EBITDA for our reportable segments for the years ended December 31, 2018, 2017 and 2016.

	Year Ended December 31,
	2018		2017		2016
Revenues
Corporate Finance	$	564,479	$	482,041	$	483,269
FLC	520,333		462,324		457,734
Economic Consulting	533,979		496,029		500,487
Technology	185,755		174,850		177,720
Strategic Communications	223,331		192,488		191,184
Total revenues	$	2,027,877	$	1,807,732	$	1,810,394
Adjusted Segment EBITDA
Corporate Finance	$	121,660	$	82,863	$	97,688
FLC	96,821		72,705		57,882
Economic Consulting	69,955		61,964		74,102
Technology	27,387		22,171		25,814
Strategic Communications	42,918		27,732		30,458
Total Adjusted Segment EBITDA	$	358,741	$	267,435	$	285,944

Schedule of Reconciliation of Net Income to Adjusted Segment Earnings before Interest, Taxes, Depreciation and Amortization

The table below reconciles net income to Total Adjusted Segment EBITDA. Unallocated corporate expenses primarily include indirect costs related to centrally managed administrative functions that have not been allocated to the segments. These administrative costs include costs related to executive management, legal, corporate office support costs, information technology, accounting, marketing, human resources and company-wide business development and strategy functions.

	Year Ended December 31,
	2018			2017			2016
Net income	$	150,611		$	107,962		$	85,520
Add back:
Income tax provision (benefit)	57,181			(20,857		)	42,283
Interest income and other	(4,977		)	(3,752		)	(10,466		)
Interest expense	27,149			25,358			24,819
Gain on sale of business	(13,031		)	—			—
Loss on early extinguishment of debt	9,072			—			—
Unallocated corporate expenses	96,595			83,140			88,182
Segment depreciation expense	27,979			27,112			34,064
Amortization of other intangible assets	8,162			10,563			10,306
Segment special charges	—			37,207			9,833
Remeasurement of acquisition-related contingent consideration	—			702			1,403
Total Adjusted Segment EBITDA	$	358,741		$	267,435		$	285,944

Schedule of Assets by Segments

The table below presents assets by segment. Segment assets primarily include accounts and notes receivable, fixed assets purchased specifically for the segment, goodwill and other intangible assets.

	December 31,
	2018		2017
Corporate Finance	$	707,924	$	726,176
FLC	412,667		401,905
Economic Consulting	516,123		501,471
Technology	171,002		195,399
Strategic Communications	212,147		215,083
Total segment assets	2,019,863		2,040,034
Unallocated corporate assets	359,258		217,207
Total assets	$	2,379,121	$	2,257,241

Schedule of Revenues Based on Location of Legal Entity and Information on Long-Lived Assets and Net Assets

The table below details information on our revenues for the years ended December 31, 2018, 2017 and 2016. Revenues have been attributed to locations based on the location of the legal entity generating the revenues.

	Year Ended December 31,
	2018		2017		2016
United States	$	1,372,116	$	1,262,682	$	1,298,492
United Kingdom	302,576		251,843		246,236
All other foreign countries	353,185		293,207		265,666
Total revenues	$	2,027,877	$	1,807,732	$	1,810,394

We do not have a single customer that represents 10% or more of our consolidated revenues.

The table below details information on our long-lived assets and net assets by geographic location, which is based on the location of the legal entity holding the assets. We define net assets as total assets less total liabilities.

	December 31, 2018						December 31, 2017
	United States		United Kingdom		All Other Foreign Countries		United States		United Kingdom		All Other Foreign Countries
Property and equipment, net	$	59,611	$	14,023	$	10,943	$	52,709	$	14,761	$	7,605
Net assets	$	867,321	$	160,894	$	320,610	$	654,010	$	207,885	$	330,076