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MORTGAGE OPERATIONS (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Key assumptions used in measuring the fair value of mortgage servicing rights [Abstract]          
Constant prepayment rate     10.84%   12.67%
Discount rate     10.02%   10.02%
Weighted average life     6 years 11 days   5 years 6 months 4 days
Mortgages held-for-sale $ 808   $ 808   $ 3,326
Real estate mortgage loans serviced 228,261   228,261   231,310
Mortgage servicing rights assets [Roll Forward]          
Beginning balance     1,815    
Additions     122    
Reductions     (168)    
Ending balance 1,769   1,769   1,815
Valuation allowance [Roll Forward]          
Beginning balance     (21)    
Additions     0    
Reductions     21    
Ending balance 0   0   (21)
Mortgage servicing rights, net of valuation allowance [Roll Forward]          
Beginning balance     1,794    
Additions     122    
Reductions     (147)    
Ending balance 1,769   1,769    
Fair value of mortgage servicing rights asset 1,897   1,897   $ 1,794
Contractually specified servicing fee $ 145 $ 149 $ 291 $ 298