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Derivative Instruments and Hedging Activities (Narrative) (Details) $ in Thousands | 3 Months Ended
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Mar. 31, 2018 USD ($)
Derivative Instruments and Hedging Activities [Abstract] |
Estimated to be reclassified as an increase to interest expense | $ 84

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration

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- Definition The estimated value of gains (losses), net anticipated to be transferred in the future from accumulated other comprehensive income into earnings. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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