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Mortgage Servicing Rights, Net (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Servicing Asset at Amortized Value, Balance [Roll Forward]
Servicing Asset at Amortized Cost, Beginning	$ 1,245	$ 1,189	$ 834
Servicing Asset at Amortized Value, Additions	966	415	524
Servicing Asset at Amortized Value, Amortization	(416)	(242)	(169)
Servicing Asset at Amortized Value, Valuation Allowance	(269)	(117)	0
Servicing Asset at Amortized Cost, Ending	1,526	1,245	1,189
Valuation Allowance for Impairment of Recognized Servicing Assets, Balance [Abstract]
Valuation Allowance for Impairment of Recognized Servicing Assets, Beginning Balance	117	0	0
Valuation Allowance for Impairment of Recognized Servicing Assets, Ending Balance	386	117	0
Servicing Asset at Amortized Value, Fair Value [Abstract]
Servicing Asset at Amortized Value, Fair Value, Beginning	1,245	1,335	978
Servicing Asset at Amortized Value, Fair Value, Ending	$ 1,526	$ 1,245	$ 1,335

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Amortized carrying amount (balance) as of the balance sheet date of an asset representing net future revenues from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

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The value of new servicing assets, subsequently measured at amortized value, acquired or created during the current period through purchases or from transfers of financial assets.

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Amount of expense charged against earnings for the periodic recognition of servicing assets relative to estimated net servicing income.

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Fair value of the servicing asset that has been amortized as of the balance sheet date.

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The amount of valuation allowance applied to adjust the carrying value of servicing assets.

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