Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenues	$ 854,748	$ 985,297	$ 1,540,611
Expenses
Compensation and benefits	714,749	618,195	913,909
Occupancy	28,608	24,243	26,533
Professional fees	32,796	20,971	21,826
Communication, technology and information services	45,978	39,310	35,373
Travel and related expenses	37,005	32,416	15,399
Depreciation and amortization	8,317	7,975	7,242
Other expenses	27,647	26,087	24,412
Total expenses	895,100	769,197	1,044,694
Operating income (loss)	(40,352)	216,100	495,917
Other income and (expenses)	11,205	220	40,396
Income (loss) before income taxes	(29,147)	216,320	536,313
Provision (benefit) for income taxes	(1,631)	47,638	113,335
Net income (loss)	(27,516)	168,682	422,978
Net income (loss) attributable to noncontrolling interests	(2,816)	18,337	57,765
Net income (loss) attributable to Moelis & Company	(24,700)	150,345	365,213
Class A Common Stock
Expenses
Net income (loss) attributable to Moelis & Company	$ (24,700)	$ 150,345	$ 365,213
Weighted-average shares of Class A common stock outstanding
Basic (in shares)	68,501,018	65,766,439	63,125,497
Diluted (in shares)	68,501,018	70,320,182	68,435,579
Net income (loss) per share attributable to holders of shares of Class A common stock
Basic (in dollars per share)	$ (0.36)	$ 2.29	$ 5.79
Diluted (in dollars per share)	$ (0.36)	$ 2.14	$ 5.34