Income Taxes - Summary of Reconciles Provision for Income Taxes (Detail)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Reconciliation of federal statutory tax rate to effective rate
Statutory U.S. federal income tax rate	21.00%	21.00%	21.00%
Income passed through to Partners	(7.05%)	(7.10%)	(7.78%)
State and local income taxes	7.56%	9.32%	12.01%
Permanent items	(0.03%)	(0.13%)	(0.44%)
Other	0.24%	0.49%	0.36%
Effective income tax rate	21.72%	23.58%	25.15%