Compensation and Benefits - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Compensation Arrangements [Line Items]
Options Exercised (in shares)	0	0	0	0
Deferred Compensation Liability	$ 4,894		$ 4,894		$ 6,840
Options canceled (in shares)			0	0
Unrecorded compensation expense	$ 34,700		$ 34,700		$ 42,100
Phantom Shares of Class A Common Stock | Director Plan
Compensation Arrangements [Line Items]
Deferred compensation percentage of compensation directors elected			100.00%
Shares outstanding (in shares)	650,760		650,760		597,412
Distributions made under Director Plan (in shares)	0	0	28,640	11,070
Restricted Shares of Class A Common Stock | Director Plan
Compensation Arrangements [Line Items]
Number of shares issued under plan	5,015	5,074	5,015	5,074
Common Class B
Compensation Arrangements [Line Items]
Delayed Exchange Class B units issued (in shares)	0	4,897	381,201	38,876
Delayed Exchange Class B units issued			$ 1,700	$ 100
Common Class B | Maximum
Compensation Arrangements [Line Items]
Delayed Exchange Class B units issued		$ 100
Equity Incentive Plan 2006
Compensation Arrangements [Line Items]
Cash compensation paid in the form of equity					$ 6,800
2007 Equity Incentive Plan | Class B-1 Units
Compensation Arrangements [Line Items]
Vesting period for units (in years)			4 years	4 years
2007 Equity Incentive Plan | Contingent Options to Purchase Shares of Class A Common Stock
Compensation Arrangements [Line Items]
Number of shares vested during period	0	0	0	250,000
Number of shares expired during period	1,000,000		1,000,000
Bonus plan
Compensation Arrangements [Line Items]
Vesting period for units (in years)			4 years