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Derivatives and Hedging Activity (Details 3) - Fair Value, Measurement Frequency [Domain] - Portion at Fair Value Measurement [Member] - Fair Value by Asset Class [Domain] - USD ($)
$ in Thousands
Jun. 30, 2015
Dec. 31, 2014
Offsetting Derivative Assets [Abstract]    
Gross Amounts Offset in the Consolidated Balance Sheets $ 0 $ 0
Net Amounts of Assets Presented in the Consolidated Balance Sheets (a) 12 88
Gross Amounts Not Offset in the Consolidated Balance Sheets, Financial Instruments 0 (27)
Gross Amounts Not Offset in the Consolidated Balance Sheets, Cash Collateral Received 0 0
Net Amount 12 61
Offsetting Derivative Liabilities [Abstract]    
Gross Amounts Offset in the Consolidated Balance Sheets 0 0
Net Amounts of Liabilities Presented in the Consolidated Balance Sheets (b) 9,109 10,368
Gross Amounts Not Offset in the Consolidated Balance Sheets, Financial Instruments 0 (27)
Gross Amounts Not Offset in the Consolidated Balance Sheets, Cash Collateral Received 0 0
Net Amount $ 9,109 $ 10,341