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Derivative Instruments and Hedging Activity (Details) - Interest Rate Swap [Member]
$ in Thousands
Sep. 30, 2016
USD ($)
Number
Dec. 31, 2015
USD ($)
Number
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Number of Interest Rate Derivatives Held | Number 5 4
Derivative Liability, Notional Amount | $ $ 185,283 $ 145,741