Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenues	$ 220,405	$ 172,149	$ 439,823	$ 345,407
Expenses
Compensation and benefits	128,109	100,808	255,286	202,534
Occupancy	4,550	4,097	9,133	8,277
Professional fees	6,574	3,939	12,258	9,180
Communication, technology and information services	7,317	6,738	14,450	12,209
Travel and related expenses	10,851	8,105	22,411	14,696
Depreciation and amortization	1,100	822	2,155	1,679
Other expenses	6,259	4,932	13,416	11,090
Total expenses	164,760	129,441	329,109	259,665
Operating income (loss)	55,645	42,708	110,714	85,742
Other income and (expenses)	1,286	17,695	1,873	17,933
Income (loss) from equity method investments	2,226	(1,330)	3,114	1,774
Income (loss) before income taxes	59,157	59,073	115,701	105,449
Provision for income taxes	6,027	9,549	8,590	16,546
Net income (loss)	53,130	49,524	107,111	88,903
Net income (loss) attributable to noncontrolling interests	17,440	29,794	38,096	53,895
Net income (loss) attributable to Moelis & Company	35,690	19,730	69,015	35,008
Class A Common Stock
Expenses
Net income (loss) attributable to Moelis & Company	$ 35,690	$ 19,730	$ 69,015	$ 35,008
Weighted-average shares of Class A common stock outstanding
Basic (in shares)	41,750,396	28,165,552	38,938,952	27,325,145
Diluted (in shares)	49,280,107	34,374,882	46,991,421	33,752,139
Net income (loss) per share attributable to holders of shares of Class A common stock
Basic (in dollars per share)	$ 0.85	$ 0.70	$ 1.77	$ 1.28
Diluted (in dollars per share)	0.72	0.57	1.47	1.04
Dividends declared per share of Class A common stock	$ 0.47	$ 1.37	$ 2.44	$ 1.74