Income Taxes (Schedule of Changes in Unrecognized Tax Benefits) (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]
Total amounts of unrecognized tax benefits, beginning of period	$ 24,247	$ 21,417	$ 18,463
Gross (decreases) increases in unrecognized tax positions as a result of tax positions taken during a prior period	(276)
Gross (decreases) increases in unrecognized tax positions as a result of tax positions taken during a prior period		2,991	74
Gross increases in unrecognized tax positions as a result of tax positions taken in the current period	4,083	461	4,681
Decreases in unrecognized tax positions relating to settlements with taxing authorities	0	0	(713)
Decreases in unrecognized tax positions as a result of a lapse of the applicable statutes of limitations	(1,213)	(622)	(1,088)
Total amounts of unrecognized tax benefits, end of period	$ 26,841	$ 24,247	$ 21,417

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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