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v2.4.1.9

Derivative Instruments and Hedging Activities (Details 3) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2015 | Dec. 31, 2014
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Derivative Assets |  |
Gross amounts of recognized assets | $ 134,041 us-gaap_DerivativeFairValueOfDerivativeAsset | $ 137,603 us-gaap_DerivativeFairValueOfDerivativeAsset
Gross amounts offset in the statement of financial position | 0 us-gaap_DerivativeAssetFairValueGrossLiability | 0 us-gaap_DerivativeAssetFairValueGrossLiability
Net amounts of assets presented in the statement of financial position | 134,041 us-gaap_DerivativeAssets | 137,603 us-gaap_DerivativeAssets
Gross amounts of financial instruments not offset in the statement of financial position | 0 us-gaap_DerivativeCollateralObligationToReturnCash | 2,338 us-gaap_DerivativeCollateralObligationToReturnCash
Net amount | $ 134,041 us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral | $ 139,941 us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral

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