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Mortgage Servicing Rights - Estimated Amortization Expense (Details 2) (Mortgage servicing rights [Member], USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Mortgage servicing rights [Member]
 
Estimated amortization expense of mortgage servicing rights for the remainder of 2012 and the succeeding fiscal years  
Remainder of 2012 $ 225
2013 777
2014 588
2015 427
2016 302
Thereafter $ 863