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Mortgage Servicing Rights ("MSRs") (Details Textual) (USD $)
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Transfers and Servicing [Abstract]            
MSRs $ 1,786,000 $ 1,546,000 $ 1,308,000 $ 774,000 $ 300,000 $ 0
Mortgage Service Rights Valuation Allowance $ 200,000   $ 200,000