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Goodwill and Other Intangible Assets - Mortgage Servicing Rights - Estimated Amortization Expense (Details 5) (Mortgage servicing rights [Member], USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Mortgage servicing rights [Member]
 
Amortization expense of mortgage servicing rights  
2013 $ 896
2014 716
2015 555
2016 440
2017 340
Thereafter $ 1,205