Condensed Consolidated and Combined Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Revenues	$ 128,651	$ 98,728	$ 374,855	$ 257,091
Expenses
Compensation and benefits	68,148	64,966	300,793	166,952
Occupancy	3,560	3,504	10,195	10,542
Professional fees	5,995	2,999	14,588	8,887
Communication, technology and information services	3,945	3,443	11,589	9,885
Travel and related expenses	8,083	3,358	19,433	12,110
Depreciation and amortization	542	571	1,636	1,743
Other expenses	2,605	5,370	14,220	10,513
Total expenses	92,878	84,211	372,454	220,632
Operating income (loss)	35,773	14,517	2,401	36,459
Other income and expenses	617	(1,101)	622	(968)
Income (loss) from equity method investments	1,105	1,739	(2,966)	2,588
Income (loss) before income taxes	37,495	15,155	57	38,079
Provision for income taxes	4,710	705	5,790	1,782
Net income (loss)	32,785	14,450	(5,733)	36,297
Net income (loss) attributable to noncontrolling interests	26,285		6,777
Net income (loss) attributable to Moelis & Company	6,500		(12,510)
Net income (loss) per share attributable to holders of shares of Class A common stock
Dividends Declared per Share of Class A common stock (in dollars per share)	$ 0.20		$ 0.20
Class A common stock
Expenses
Net income (loss) attributable to Moelis & Company	$ 6,500		$ (12,510)
Weighted-average shares of Class A common stock outstanding
Basic (in shares)	15,262,343		15,262,940
Diluted (in shares)	16,205,254		15,262,940
Net income (loss) per share attributable to holders of shares of Class A common stock
Basic (in dollars per share)	$ 0.43		$ (0.82)
Diluted (in dollars per share)	$ 0.40		$ (0.82)