Income Taxes (Details)	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Components of income tax rate reconciliation
Income tax expense computed at the statutory federal income tax rate	21.00%	21.00%	21.00%	21.00%
State taxes net of federal expense	1.00%	3.00%	1.00%	2.00%
Section 162(m)	0.00%	2.00%	0.00%	1.00%
Valuation allowance	0.00%	(21.00%)	0.00%	(21.00%)
Effective income tax rate, before discrete items	22.00%	5.00%	22.00%	3.00%
Discrete items (a)	2.00%	(1.00%)	2.00%	(1.00%)
Effective income tax rate, before discrete items	24.00%	4.00%	24.00%	2.00%

Effective Income Tax Rate Reconciliation, Before Discrete Items, Percent

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Effective Income Tax Rate Reconciliation, Discrete Items, Percent

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Effective Income Tax Rate Reconciliation, Section One Hundred Sixty Two(M)

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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 changes in the valuation allowance for deferred tax assets.

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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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