Mortgage Servicing Rights (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Mortgage Servicing Rights [Abstract]
Cost of mortgage servicing rights: Beginning balance	$ 458	$ 730
Cost of mortgage servicing rights: Originations
Cost of mortgage servicing rights: Amortization	(72)	(100)
Cost of mortgage servicing rights: Permanent writedowns	(55)
Cost of mortgage servicing rights: Ending balance	331	630
Valuation allowance: Beginning balance	(223)	(362)
Valuation allowance: Valuation charges		(17)
Valuation allowance: Valuation reversals	94	61
Valuation allowance: Ending balance	(129)	(318)
Mortgage servicing rights cost	331	630
Valuation allowance	(129)	(318)
Carrying value	202	312
Fair value	$ 202	$ 312	$ 235

Servicing Asset At Carrying Amount

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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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Adjustment made to the carrying value of servicing assets measured using the amortization method related to an other-than-temporary impairment, for example, due to a decrease in future servicing income or an increase in servicing costs.

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Fair value 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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Reflects the estimated amount of impairment as of the balance sheet date of recognized servicing assets that are being amortized in proportion to and over the period of estimated net servicing income or loss.

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This item represents the contra-account activity for provisions recognized for impairments of servicing assets which is offset against the value of servicing assets to arrive at a net carrying value as of the date of the statement of financial position.

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This item represents the contra-account activity for recoveries recognized for impairments of servicing assets which is offset against the value of servicing assets to arrive at a net carrying value as of the date of the statement of financial position.

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