Segment Information (Tables)

12 Months Ended

Dec. 31, 2017

Segment Reporting [Abstract]

Segment's Contribution with Respect to Net Revenue, Operating Expenses, Operating Income (Loss) and Total Assets

Management evaluates segment results based on net revenue and operating income (loss) and believes that the following information provides a reasonable representation of each segment’s contribution with respect to net revenue, operating income (loss) and total assets:

		As Of Or For The Year Ended December 31,
		2017			2016			2015
Financial Advisory	Net Revenue	$	1,387,682		$	1,301,044		$	1,279,628
	Operating Expenses (a)		1,143,586			1,017,055			1,005,837
	Operating Income	$	244,096		$	283,989		$	273,791
	Total Assets	$	843,142		$	907,035		$	763,374
Asset Management	Net Revenue	$	1,255,820		$	1,051,316		$	1,111,105
	Operating Expenses (a)		810,870			769,737			736,798
	Operating Income	$	444,950		$	281,579		$	374,307
	Total Assets	$	756,398		$	645,653		$	640,034
Corporate	Net Revenue	$	809		$	(18,989	)	$	(37,125	)
	Operating Expenses (a)/(b)		(135,591	)		29,118			627,593
	Operating Income (Loss)	$	136,400		$	(48,107	)	$	(664,718	)
	Total Assets	$	3,329,137		$	3,003,820		$	3,074,366
Total	Net Revenue	$	2,644,311		$	2,333,371		$	2,353,608
	Operating Expenses (a)		1,818,865			1,815,910			2,370,228
	Operating Income (Loss)	$	825,446		$	517,461		$	(16,620	)
	Total Assets	$	4,928,677		$	4,556,508		$	4,477,774

(a) Operating expenses include depreciation and amortization of property as set forth in table below.

	Year Ended December 31,
	2017		2016		2015
Financial Advisory	$	6,596	$	5,661	$	4,412
Asset Management		2,830		3,666		2,957
Corporate		22,072		23,937		25,416
Total	$	31,498	$	33,264	$	32,785

(b) Operating expenses include a benefit of $202,546 for the year ended December 31, 2017, and a provision of $547,691 for the year ended December 31, 2015, recorded for the provision (benefit) pursuant to the tax receivable agreement. See Note 18 for information regarding the tax receivable agreement obligation.

Schedule of Operating Income, Revenue and Identifiable Assets by Geographical Areas

The following table sets forth the net revenue from, and identifiable assets for, the Company and its consolidated subsidiaries by geographic region allocated on the basis described above.

	As Of Or For The Year Ended December 31,
	2017		2016		2015
Net Revenue:
Americas	$	1,558,070	$	1,399,285	$	1,322,898
EMEA		903,525		795,932		813,136
Asia Pacific		182,716		138,154		217,574
Total	$	2,644,311	$	2,333,371	$	2,353,608
Operating Income (Loss):
Americas (a)	$	596,044	$	335,887	$	(259,538	)
EMEA		193,781		168,745		163,612
Asia Pacific		35,621		12,829		79,306
Total	$	825,446	$	517,461	$	(16,620	)
Identifiable Assets:
Americas	$	2,600,412	$	3,015,267	$	2,811,850
EMEA		2,039,385		1,286,149		1,405,555
Asia Pacific		288,880		255,092		260,369
Total	$	4,928,677	$	4,556,508	$	4,477,774

(a) Operating income (loss) includes a benefit of $202,546 for the year ended December 31, 2017, and a provision of $547,691 for the year ended December 31, 2015, recorded for the provision (benefit) pursuant to the tax receivable agreement. See Note 18 for information regarding the tax receivable agreement obligation.