Income Taxes (Reconciliation of Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefit as of January 1	$ 6,204	$ 4,750	$ 4,957
Unrecognized tax benefit as of January 1	6,204	4,750	4,957
Additions in tax positions in prior period	250	683	646
Reductions in tax positions in prior period	(690)	0	(634)
Additions in tax positions in current period	461	966	245
Settlements	(621)	(123)	(238)
Lapse of statute of limitations	(1,045)	(414)	(196)
Cumulative foreign currency translation adjustment	(48)		(30)
Cumulative foreign currency translation adjustment		342
Unrecognized tax benefit as of December 31	$ 4,511	$ 6,204	$ 4,750

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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