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Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Effective tax rate	16.40%	26.20%	21.00%	24.80%
Discrete tax expense (benefit)	$ (727)	$ (5,443)	$ (6,658)	$ (8,357)
Equity based compensation, provisional income tax expense (benefit)	1,896	229	6,590	4,271
Provisional income tax expense (benefit)	1,586	$ 5,326	3,867	$ 5,293
Provision adjustment, tax effect of losses in subsidiaries	$ 2,641		$ 3,282

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Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Equity Based Compensation, Provisional Income Tax Expense (Benefit)

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Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Provision Adjustment, Provisional Income Tax Expense (Benefit)

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Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Provision Adjustment, Tax Effect Of Losses In Subsidiaries

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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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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
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Amount of income tax expense (benefit) from effect of Tax Cuts and Jobs Act.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
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