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		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans identified during the period	$ 1,717	$ 4,126	$ 2,936	$ 5,127
Residential
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans identified during the period	905	321	1,126	423
Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans identified during the period	245	540	459	1,408
Commercial and industrial | Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans identified during the period	0	1,347	31	1,347
Owner-occupied commercial | Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans identified during the period	567	1,435	1,216	1,435
Commercial mortgages | Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans identified during the period	0	483	104	514
Construction | Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans identified during the period	$ 0	$ 0	$ 0	$ 0