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MORTGAGE SERVICING RIGHTS (Details) (USD $)
6 Months Ended 12 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Dec. 31, 2012
MORTGAGE SERVICING RIGHTS      
Residential first mortgage loans the Corporation has obligations to service $ 120,000,000    
Annual constant prepayment speed (as a percent) 15.90%    
Discount rate (as a percent) 7.50%    
Changes in mortgage servicing rights capitalized and amortized, along with the aggregate activity in related valuation allowances      
Balance at beginning of period 638,000 400,000 400,000
Additions from loans sold with servicing retained 225,000 170,000 344,000
Amortization (80,000) (45,000) (106,000)
Fair value of MSRs at end of period $ 783,000 $ 525,000 $ 638,000