Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenues	$ 153,523	$ 220,405	$ 291,306	$ 439,823
Expenses
Compensation and benefits	84,485	128,109	174,646	255,286
Occupancy	4,765	4,550	9,584	9,133
Professional fees	5,342	6,574	10,521	12,258
Communication, technology and information services	7,877	7,317	15,839	14,450
Travel and related expenses	9,293	10,851	20,790	22,411
Depreciation and amortization	1,290	1,100	2,445	2,155
Other expenses	6,592	6,259	13,973	13,416
Total expenses	119,644	164,760	247,798	329,109
Operating income (loss)	33,879	55,645	43,508	110,714
Other income and (expenses)	4,303	1,286	5,680	1,873
Income (loss) from equity method investments	719	2,226	1,432	3,114
Income (loss) before income taxes	38,901	59,157	50,620	115,701
Provision (benefit) for income taxes	1,234	6,027	(3,224)	8,590
Net income (loss)	37,667	53,130	53,844	107,111
Net income (loss) attributable to noncontrolling interests	8,208	17,440	10,815	38,096
Net income (loss) attributable to Moelis & Company	29,459	35,690	43,029	69,015
Class A Common Stock
Expenses
Net income (loss) attributable to Moelis & Company	$ 29,459	$ 35,690	$ 43,029	$ 69,015
Weighted-average shares of Class A common stock outstanding
Basic (in shares)	50,107,269	41,750,396	48,919,127	38,938,952
Diluted (in shares)	54,668,087	49,280,107	54,770,852	46,991,421
Net income (loss) per share attributable to holders of shares of Class A common stock
Basic (in dollars per share)	$ 0.59	$ 0.85	$ 0.88	$ 1.77
Diluted (in dollars per share)	$ 0.54	$ 0.72	$ 0.79	$ 1.47