Fair Value (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Level III assets measured at fair value on recurring or non-recurring basis
Valuation Technique	Appraisal of collateral
Impaired Loans [Member]
Level III assets measured at fair value on recurring or non-recurring basis
Fair Value of Assets	$ 14,578	$ 14,740
Valuation Technique	Discounted Cash Flow
Significant Unobservable Inputs	Remaining term
Range	.5 yrs to 21.5 yrs
Real estate acquired through foreclosure [Member]
Level III assets measured at fair value on recurring or non-recurring basis
Fair Value of Assets	2,426	2,441
Valuation Technique	Appraisal of collateral (1)
Servicing assets [Member]
Level III assets measured at fair value on recurring or non-recurring basis
Fair Value of Assets	12	14
Valuation Technique	Discounted Cash Flow
Significant Unobservable Inputs	Remaining term
Range	.2 yrs to 18.8 yrs
Trust preferred securities [Member]
Level III assets measured at fair value on recurring or non-recurring basis
Fair Value of Assets	$ 36,353	$ 36,179
Valuation Technique	Discounted Cash Flow
Trust Preferred Securities Credit Spreads [Member]
Level III assets measured at fair value on recurring or non-recurring basis
Significant Unobservable Inputs	Credit Spreads
Range	45-80 basis points
Trust Preferred Securities Liquidity Risk Adjustments [Member]
Level III assets measured at fair value on recurring or non-recurring basis
Significant Unobservable Inputs	Liquidity Risk Adjustments
Range	20-55 basis points
Trust Preferred Securities Default Rates [Member]
Level III assets measured at fair value on recurring or non-recurring basis
Significant Unobservable Inputs	Default Rates
Range	.6% -1%
Servicing Assets Discount Rate [Member]
Level III assets measured at fair value on recurring or non-recurring basis
Significant Unobservable Inputs	Discount Rate
Range	11.25% - 12.25%
Impaired Loans Discount Rate [Member]
Level III assets measured at fair value on recurring or non-recurring basis
Significant Unobservable Inputs	Discount Rate
Range	3.8% - 7.0%
Impaired Loans Interest Rate [Member]
Level III assets measured at fair value on recurring or non-recurring basis
Significant Unobservable Inputs	Interest Rate
Range	3.3% - 8.5%