Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenues	$ 985,297	$ 1,540,611	$ 943,276
Expenses
Compensation and benefits	618,195	913,909	560,803
Occupancy	24,243	26,533	30,033
Professional fees	20,971	21,826	18,378
Communication, technology and information services	39,310	35,373	32,181
Travel and related expenses	32,416	15,399	12,845
Depreciation and amortization	7,975	7,242	4,708
Other expenses	26,087	24,412	18,619
Total expenses	769,197	1,044,694	677,567
Operating income (loss)	216,100	495,917	265,709
Other income and (expenses)	220	40,396	4,404
Income (loss) before income taxes	216,320	536,313	270,113
Provision (benefit) for income taxes	47,638	113,335	51,675
Net income (loss)	168,682	422,978	218,438
Net income (loss) attributable to noncontrolling interests	18,337	57,765	39,607
Net income (loss) attributable to Moelis & Company	150,345	365,213	178,831
Class A Common Stock
Expenses
Net income (loss) attributable to Moelis & Company	$ 150,345	$ 365,213	$ 178,831
Weighted-average shares of Class A common stock outstanding
Basic (in shares)	65,766,439	63,125,497	56,566,645
Diluted (in shares)	70,320,182	68,435,579	60,723,365
Net income (loss) per share attributable to holders of shares of Class A common stock
Basic (in dollars per share)	$ 2.29	$ 5.79	$ 3.16
Diluted (in dollars per share)	$ 2.14	$ 5.34	$ 2.95