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Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	$ 45,895	$ 42,617	$ 91,747	$ 79,771
Provision for income taxes (Note J)	$ 9,784	$ 10,172	$ 20,371	$ 18,128
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent	21.30%	23.90%	22.20%	22.70%

X

- Definition

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

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Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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