Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Revenues	$ 272,179	$ 233,506	$ 639,870	$ 778,114
Expenses
Compensation and benefits	242,231	160,437	536,264	477,166
Occupancy	7,181	6,022	19,887	18,099
Professional fees	13,525	6,048	25,378	15,933
Communication, technology and information services	11,709	9,971	33,758	28,858
Travel and related expenses	8,394	7,389	28,575	24,398
Depreciation and amortization	2,014	1,918	6,023	5,798
Other expenses	7,151	6,672	20,988	21,187
Total expenses	292,205	198,457	670,873	591,439
Operating income (loss)	(20,026)	35,049	(31,003)	186,675
Other income and (expenses)	9,943	2,625	6,060	(2,656)
Income (loss) before income taxes	(10,083)	37,674	(24,943)	184,019
Provision (benefit) for income taxes	1,286	9,115	(3,891)	38,009
Net income (loss)	(11,369)	28,559	(21,052)	146,010
Net income (loss) attributable to noncontrolling interests	(637)	2,947	(2,012)	15,720
Net income (loss) attributable to Moelis & Company	(10,732)	25,612	(19,040)	130,290
Class A Common Stock
Expenses
Net income (loss) attributable to Moelis & Company	$ (10,732)	$ 25,612	$ (19,040)	$ 130,290
Weighted-average shares of Class A common stock outstanding
Basic (in shares)	68,752,061	65,873,976	68,260,558	65,684,485
Diluted (in shares)	68,752,061	69,829,338	68,260,558	70,183,414
Net income (loss) per share attributable to holders of shares of Class A common stock
Basic (in dollars per share)	$ (0.16)	$ 0.39	$ (0.28)	$ 1.98
Diluted (in dollars per share)	$ (0.16)	$ 0.37	$ (0.28)	$ 1.86