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Income Taxes (Schedule Of Uncertain Tax Position Liability And Liability For Interest And Penalties On Uncertain Tax Positions) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Income Taxes [Abstract] |  |  |
Beginning balance | $ 969 | $ 1,437 | $ 2,100
Increases related to current year tax positions | 86 | 103 | 92
Increases related to prior year tax positions | 2,668 | 403 |
Decreases related to prior year tax positions | (40) | (70) | (265)
Decreases related to settlements | (66) |  |
Decreases due to the lapsing of statutes of limitations | (227) | (904) | (490)
Ending balance | 3,390 | 969 | 1,437
Beginning Balance | 210 | 366 | 422
Accrual of interest and penalties | 92 | 50 | 91
Decreases related to prior year tax positions | (94) | (206) | (147)
Ending Balance | $ 208 | $ 210 | $ 366

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- Definition Unrecognized Tax Benefits, Income Tax Penalties and Interest Decreases Related to Prior Year Tax Positions + References No definition available. + Details
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- Definition Amount of unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=65882285&loc=SL6600010-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Unrecognized Tax Benefit -URI http://asc.fasb.org/extlink&oid=6527854 + Details
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- Definition Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=65882285&loc=SL6600010-109319 + Details
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- Definition Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=65882285&loc=SL6600010-109319 + Details
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