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LOANS (Loans by credit quality indicator narrative) (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2019
Dec. 31, 2018
Financing Receivable, Recorded Investment [Line Items]    
Loans delinquent 30 to 89 days, percentage 0.47% 0.21%
Loans secured by residential real estate property in process of foreclosure $ 2.8  
Threshold period past due, nonperforming status of loans and leases 90 days  
Special Mention    
Financing Receivable, Recorded Investment [Line Items]    
Percent of loans 48.00% 52.00%
Substandard    
Financing Receivable, Recorded Investment [Line Items]    
Percent of loans 52.00% 48.00%
Nonpass    
Financing Receivable, Recorded Investment [Line Items]    
Percent of nonaccrual loans 16.00% 16.00%