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Income Tax (Reconciliation of unrecognized tax benefits) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Reconciliation Of Unrecognized Tax Benefits Excluding Amounts Pertaining To Examined Tax Returns [Roll Forward] |  |  |
Balance at beginning of year | $ 1,260 | $ 2,040 | $ 2,175
Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions | 81 | 97 | 229
Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities | 0 | 0 | 999
Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations | (466) | (877) | (1,363)
Balance at end of year | $ 875 | $ 1,260 | $ 2,040

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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount of unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 10B -URI http://asc.fasb.org/extlink&oid=84176650&loc=SL37586934-109318 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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