Effective Income Tax Rate Reconciliation, Compensation Limits. Amount

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Effective Income Tax Rate Reconciliation, Tax Cuts And Jobs Act Of 2017, Amount

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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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Amount of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to excess tax benefit for share-based compensation cost.

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

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Amount of the difference between reported income tax expense (benefit) and the 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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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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Amount 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 tax exempt income, equity in earnings (loss) of an unconsolidated subsidiary, minority noncontrolling interest income (loss), tax holiday, disposition of a business, disposition of an asset, repatriation of foreign earnings, repatriation of foreign earnings jobs creation act of 2004, increase (decrease) in enacted tax rate, prior year income taxes, increase (decrease) in deferred tax asset valuation allowance, and other adjustments.

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Income Taxes - A Reconciliation of the Provision for income taxes from continuing operations (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Expected provision at federal statutory rate									$ 10,286	$ 18,465	$ 15,651
State income taxes, net									2,029	1,612	1,672
Change in valuation allowance									1,304	(578)	(718)
Domestic production activity deduction									0	(957)	(1,247)
Share-based compensation									(1,201)	(4,254)	(1,408)
Compensation limits									0	931	0
Federal and state tax credits									(807)	(1,058)	(1,065)
Tax benefit from the Tax Act									0	(3,343)	0
Other									85	117	648
Total	$ 4,452	$ 2,673	$ 3,316	$ 1,255	$ (2,357)	$ 7,491	$ 2,947	$ 2,854	$ 11,696	$ 10,935	$ 13,533
Effective tax rate									23.90%	20.70%	30.30%