Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenues	$ 179,871	$ 242,520	$ 367,691	$ 544,608
Expenses
Compensation and benefits	145,794	140,092	294,033	316,729
Occupancy	6,872	6,267	12,706	12,077
Professional fees	6,907	5,570	11,853	9,885
Communication, technology and information services	11,215	10,108	22,049	18,887
Travel and related expenses	9,213	9,366	20,181	17,009
Depreciation and amortization	1,936	1,841	4,009	3,880
Other expenses	7,520	7,077	13,837	14,515
Total expenses	189,457	180,321	378,668	392,982
Operating income (loss)	(9,586)	62,199	(10,977)	151,626
Other income and (expenses)	(5,629)	(3,046)	(3,883)	(5,281)
Income (loss) before income taxes	(15,215)	59,153	(14,860)	146,345
Provision (benefit) for income taxes	(1,969)	15,296	(5,177)	28,894
Net income (loss)	(13,246)	43,857	(9,683)	117,451
Net income (loss) attributable to noncontrolling interests	(1,272)	4,894	(1,375)	12,773
Net income (loss) attributable to Moelis & Company	(11,974)	38,963	(8,308)	104,678
Class A Common Stock
Expenses
Net income (loss) attributable to Moelis & Company	$ (11,974)	$ 38,963	$ (8,308)	$ 104,678
Weighted-average shares of Class A common stock outstanding
Basic (in shares)	68,504,772	66,290,442	67,852,077	65,572,013
Diluted (in shares)	68,504,772	69,811,979	67,852,077	70,171,256
Net income (loss) per share attributable to holders of shares of Class A common stock
Basic (in dollars per share)	$ (0.17)	$ 0.59	$ (0.12)	$ 1.6
Diluted (in dollars per share)	$ (0.17)	$ 0.56	$ (0.12)	$ 1.49