LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES - NON-PERFORMING LOANS (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Non-performing loans and non-performing assets disclosures
Loans on nonaccrual status	$ 15,361	$ 15,993
Loans past due 90 days or more and still on accrual	199	145
Total nonperforming loans	15,560	16,138
Other real estate owned	216	160
Total nonperforming assets	$ 15,776	$ 16,298
Credit Quality Ratios - Total Company:
Nonperforming loans to total loans (as percent)	0.36%	0.39%
Nonperforming assets to total loans (including OREO) (as percent)	0.37%	0.39%
Nonperforming assets to total assets (as percent)	0.29%	0.31%
Core Banking Activities
Non-performing loans and non-performing assets disclosures
Loans on nonaccrual status	$ 15,361	$ 15,993
Loans past due 90 days or more and still on accrual	$ 4	$ 13
Credit Quality Ratios - Total Company:
Nonperforming loans to total loans (as percent)	0.37%	0.40%
Nonperforming assets to total loans (including OREO) (as percent)	0.37%	0.40%
Nonperforming assets to total assets (as percent)	0.31%	0.32%