Fair Value Measurements (Details 3) (USD $) In Thousands, unless otherwise specified	9 Months Ended
Sep. 30, 2012
Impaired Loans [Member]
Changes in Level 3 assets measured at estimated fair value on a nonrecurring basis
Balance, December 31, 2011	$ 1,107
Increase in carrying value	139
Decrease in carrying value	(126)
Additions	6,250
Transfers to OREO	(209)
Transfers out of Level 3	(171)
Transfers into Level 3	1,523
Balance, September 30, 2012	8,513
Other Real Estate Owned [Member]
Changes in Level 3 assets measured at estimated fair value on a nonrecurring basis
Balance, December 31, 2011
Increase in carrying value
Decrease in carrying value
Additions
Transfers to OREO	2,428
Transfers out of Level 3
Transfers into Level 3	2,895
Balance, September 30, 2012	$ 5,323

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Fair value, measurement with unobservable inputs reconciliation, non recurring basis, asset, period increase decrease.

No definition available.

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Fair value measurement with unobservable inputs reconciliation non recurring basis asset transfers into level3.

No definition available.

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Fair value measurement with unobservable inputs reconciliation nonrecurring basis asset transfers out of level three.

No definition available.

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Fair value measurement with unobservable inputs reconciliation non recurring basis asset transfers to Oreo.

No definition available.

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Fair value measurement with unobservable inputs reconciliation non recurring basis asset value.

No definition available.

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Fair value measurement with unobservable inputs reconciliation non recurring basis decrease in asset value.

No definition available.

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Fair value measurement with unobservable inputs reconciliation non recurring basis increase in asset value.

No definition available.

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