Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Derivative Assets And Liabilities (Narrative) (Details)

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Derivative Assets And Liabilities (Narrative) (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Derivative [Line Items]    
Derivative liabilities, Fair Value $ 21 $ 2,208
Derivative Asset, Fair Value, Amount Not Offset Against Collateral 18,965 24,549
Derivative Liability, Fair Value, Amount Not Offset Against Collateral 21 2,208
Cash collateral $ 4,500 $ 8,100