Income Taxes (Summary of Positions for which Significant Change in Unrecognized Tax Benefits is Reasonably Possible) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning balance	$ 2,856	$ 3,595	$ 3,847
Additions as a result of tax positions taken during the current year	1,106	249	584
Additions as a result of tax positions taken during prior years	1,744	71	7
Reductions as a result of tax positions taken during prior years	(238)	(474)	(61)
Reductions relating to settlements with taxing authorities	(18)	(97)	(392)
Reductions as a result of lapse of statute of limitation periods	(637)	(488)	(390)
Ending balance	$ 4,813	$ 2,856	$ 3,595

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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Amount of unrecognized tax benefits.

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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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