ALLOWANCE FOR LOAN AND LEASE LOSSES AND CREDIT QUALITY INFORMATION - Schedule of Loans Identified as Troubled Debt Restructurings During Periods Indicated (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Financing Receivable, Modifications [Line Items]
Total loans identified during the period	$ 1,001	$ 1,640
Commercial and Industrial
Financing Receivable, Modifications [Line Items]
Total loans identified during the period	0	0
Commercial mortgages
Financing Receivable, Modifications [Line Items]
Total loans identified during the period	31	458
Construction
Financing Receivable, Modifications [Line Items]
Total loans identified during the period	0	920
Residential
Financing Receivable, Modifications [Line Items]
Total loans identified during the period	102	0
Consumer
Financing Receivable, Modifications [Line Items]
Total loans identified during the period	868	262
Owner-occupied commercial
Financing Receivable, Modifications [Line Items]
Total loans identified during the period	$ 0	$ 0