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Derivative Instruments and Hedging Activities (Summary of Fair Value of Derivative Instruments) (Details) - Interest Rate Swap [Member] - Other Liabilities [Member] - USD ($)
$ in Thousands
Dec. 31, 2015
Jul. 29, 2015
Dec. 31, 2014
Derivative [Line Items]      
Derivatives designated as hedging instruments under GAAP, Fair Value $ 0 $ 237 $ 289
Derivatives not designated as hedging instruments under GAAP, Fair Value $ 149   $ 0