Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenues	$ 159,938	$ 153,523	$ 313,644	$ 291,306
Expenses
Compensation and benefits	149,616	84,485	244,736	174,646
Occupancy	7,673	4,765	14,904	9,584
Professional fees	5,195	5,342	9,431	10,521
Communication, technology and information services	7,563	7,877	15,955	15,839
Travel and related expenses	1,548	9,293	9,492	20,790
Depreciation and amortization	1,076	1,290	2,275	2,445
Other expenses	4,419	6,592	9,561	13,973
Total expenses	177,090	119,644	306,354	247,798
Operating income (loss)	(17,152)	33,879	7,290	43,508
Other income and (expenses)	(3,277)	5,022	(4,937)	7,112
Income (loss) before income taxes	(20,429)	38,901	2,353	50,620
Provision (benefit) for income taxes	(11,385)	1,234	(18,729)	(3,224)
Net income (loss)	(9,044)	37,667	21,082	53,844
Net income (loss) attributable to noncontrolling interests	(3,312)	8,208	1,684	10,815
Net income (loss) attributable to Moelis & Company	(5,732)	29,459	19,398	43,029
Class A Common Stock
Expenses
Net income (loss) attributable to Moelis & Company	$ (5,732)	$ 29,459	$ 19,398	$ 43,029
Weighted-average shares of Class A common stock outstanding
Basic (in shares)	56,130,614	50,107,269	54,449,690	48,919,127
Diluted (in shares)	56,130,614	54,668,087	58,362,500	54,770,852
Net income (loss) per share attributable to holders of shares of Class A common stock
Basic (in dollars per share)	$ (0.10)	$ 0.59	$ 0.36	$ 0.88
Diluted (in dollars per share)	$ (0.10)	$ 0.54	$ 0.33	$ 0.79