LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES - NON-PERFORMING LOANS (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Non-performing loans and non-performing assets disclosures
Loans on nonaccrual status	$ 15,892	$ 21,712
Loans past due 90 days or more and still on accrual	167	224
Total nonperforming loans	16,059	21,936
Other real estate owned	1,391	1,220
Total nonperforming assets	$ 17,450	$ 23,156
Credit Quality Ratios - Total Company:
Nonperforming loans to total loans (as percent)	0.42%	0.66%
Nonperforming assets to total loans (including OREO) (as percent)	0.46%	0.70%
Nonperforming assets to total assets (as percent)	0.36%	0.55%
Core Banking Activities
Credit Quality Ratios - Total Company:
Nonperforming loans to total loans (as percent)	0.42%	0.66%
Nonperforming assets to total loans (including OREO) (as percent)	0.46%	0.70%
Nonperforming assets to total assets (as percent)	0.36%	0.55%