Derivative Instruments Derivative Instruments (Derivative Liabilities Offset in the Consolidated Balance Sheet) (Details) - Not Designated as Hedging Instrument - Interest Rate Swap $ in Thousands	Dec. 31, 2017 USD ($)
Customer Counterparties Loan Interest Rate Swap Liabilities
Offsetting Liabilities [Line Items]
Gross Amounts of Recognized Liabilities	$ 9,513
Derivative Liability	9,513
Derivative Liability, Fair Value of Collateral	9,513
Derivative Liability, Fair Value, Amount Not Offset Against Collateral	9,513
Derivative Liability, Fair Value, Amount Offset Against Collateral	0
Financial Institution Counterparties Loan Interest Rate Swap Liabilities
Offsetting Liabilities [Line Items]
Gross Amounts of Recognized Liabilities	4,877
Derivative Liability	4,877
Derivative Liability, Fair Value of Collateral	15,661
Derivative Liability, Fair Value, Amount Not Offset Against Collateral	15,661
Derivative Liability, Fair Value, Amount Offset Against Collateral	$ 0

Fair value, after offset of derivative asset, of financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, elected not to be and before offset against a right to receive collateral under a master netting arrangement. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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Fair value, after effects of master netting arrangements, of financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset offset against the right to receive collateral. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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Fair value of asset associated with financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.

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- Definition

Fair value of securities pledged as collateral against derivative liabilities.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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