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Mortgage-Banking Activities (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Summary of activity in valuation allowance for impairment of mortgage-servicing rights
Valuation allowance, beginning of period	$ 38	$ 41	$ 39	$ 39
Additions charged to (reduction credited from) operations	2	(3)	(1)	(1)
Valuation allowance, end of period	$ 40	$ 38	$ 40	$ 38

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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