LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES - NON-PERFORMING LOANS (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES
Loans on nonaccrual status	$ 21,712	$ 23,337
Loans past due 90 days or more and still on accrual	224	322
Total nonperforming loans	21,936	23,659
Other real estate owned	1,220	11,243	$ 17,102
Total nonperforming assets	$ 23,156	$ 34,902
Credit Quality Ratios - Total Company:
Nonperforming loans to total loans (as percent)	0.66%	0.78%
Nonperforming assets to total loans (including OREO) (as percent)	0.70%	1.14%
Nonperforming assets to total assets (as percent)	0.55%	0.93%