Income Taxes (Details)	3 Months Ended	9 Months Ended
Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Reconciliation between the statutory United States Federal income tax rate and the Company's effective income tax rate
Statutory rate	35.00%	35.00%	35.00%	35.00%
State taxes	1.30%	1.20%	1.20%	1.20%
Domestic production activities deduction	(0.00%)	(1.70%)	(0.00%)	(1.80%)
Noncontrolling interest in partially-owned subsidiaries	(0.80%)	(0.90%)	(1.00%)	(0.90%)
State adjustments	0.00%	0.00%	0.00%	0.10%
Other, net	0.30%	0.00%	0.40%	0.10%
Effective rate	35.80%	33.60%	35.60%	33.70%

Effective Income Tax Rate Reconciliation, State Adjustments, Percent

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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 deduction for qualified production activity.

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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 applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).

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