Balance Sheet Offsetting (Details) (Interest Rate Contract [Member], USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Interest Rate Contract [Member]
Offsetting of Derivative Assets [Abstract]
Gross amounts recognized	$ 2,069	$ 3,084
Gross amounts offset in the balance sheet	0	0
Net amounts presented in the balance sheet	2,069	3,084
Financial instruments	(2,068)	(3,082)
Collateral	0	0
Net amount	1	2
Offsetting of Derivative Liabilities [Abstract]
Gross amounts recognized	39,884	41,786
Gross amounts offset in the balance sheet	0	0
Net amounts presented in the balance sheet	39,884	41,786
Financial instruments	(2,068)	(3,082)
Collateral	(32,136)	(33,405)
Net amount	$ 5,680	$ 5,299

Derivative liabilities subject to master netting agreement

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Net Amounts of Assets Presented In Statement of Financial Position

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Fair value of liability associated with financial asset or other 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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-Publisher FASB

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Fair value of securities received as collateral against derivative assets.

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Amount of obligation to return securities collateral under master netting arrangements that have not been offset against derivative assets.

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Amount of right to receive securities collateral under master netting arrangements that have not been offset against derivative liabilities.

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Fair value before effects of master netting arrangements, of a financial asset or other 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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Fair value before 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.

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Fair value 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 of securities pledged as collateral against derivative liabilities.

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