LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES - NON-PERFORMING LOANS (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Non-performing loans and non-performing assets disclosures
Loans on nonaccrual status	$ 23,332	$ 15,993
Loans past due 90 days or more and still on accrual	157	145
Total nonperforming loans	23,489	16,138
Other real estate owned	113	160
Total nonperforming assets	$ 23,602	$ 16,298
Credit Quality Ratios - Total Company:
Nonperforming loans to total loans (as percent)	0.53%	0.39%
Nonperforming assets to total loans (including OREO) (as percent)	0.53%	0.39%
Nonperforming assets to total assets (as percent)	0.42%	0.31%
Core Banking Activities
Non-performing loans and non-performing assets disclosures
Loans on nonaccrual status	$ 23,332	$ 15,993
Loans past due 90 days or more and still on accrual		$ 13
Credit Quality Ratios - Total Company:
Nonperforming loans to total loans (as percent)	0.54%	0.40%
Nonperforming assets to total loans (including OREO) (as percent)	0.54%	0.40%
Nonperforming assets to total assets (as percent)	0.43%	0.32%