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Income Taxes and Related Payments - Reconciliation of effective tax rate (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
U.S. federal statutory rate	21.00%	21.00%	21.00%
State and local taxes, net of federal tax effect	3.50%	3.10%	2.80%
Excess tax benefits on share-based compensation	(1.40%)	(1.10%)	(0.70%)
Rate benefit from the flow through entity	(4.10%)	(5.50%)	(6.70%)
Change in state tax rate	0.00%	(1.10%)	(6.80%)
Unrecognized tax benefits	0.00%	0.20%	0.60%
Other	0.40%	(0.10%)	0.10%
Effective tax rate	19.40%	16.50%	10.30%

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments.

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