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Change in Accumulated Other Comprehensive Income (Narrative) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |  |  |
Reclassifications from other comprehensive (loss) income | $ 990 us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax | $ 465 us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax | $ 45 us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax

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- Definition Amount before tax of reclassification adjustments of other comprehensive income (loss). + References No definition available. + Details
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