LOANS AND LEASES - Collateral (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]
Total impaired loans		$ 59,600
Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total impaired loans		27,480
Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total impaired loans		15,162
Impaired Financing Receivables With Related Allowance [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Total impaired loans	$ 24,178
Impaired Financing Receivables With Related Allowance [Member] | Commercial real estate-investor
Financing Receivable, Allowance for Credit Loss [Line Items]
Total impaired loans	0
Impaired Financing Receivables With Related Allowance [Member] | Equipment
Financing Receivable, Allowance for Credit Loss [Line Items]
Total impaired loans	11,541
Impaired Financing Receivables With Related Allowance [Member] | Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total impaired loans	2,546
Impaired Financing Receivables With Related Allowance [Member] | Asset Pledged as Collateral
Financing Receivable, Allowance for Credit Loss [Line Items]
Total impaired loans	10,091
Impaired Financing Receivables With Related Allowance [Member] | Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total impaired loans	21,632	10,754
Impaired Financing Receivables With Related Allowance [Member] | Commercial | Commercial real estate-investor
Financing Receivable, Allowance for Credit Loss [Line Items]
Total impaired loans	0
Impaired Financing Receivables With Related Allowance [Member] | Commercial | Equipment
Financing Receivable, Allowance for Credit Loss [Line Items]
Total impaired loans	11,541
Impaired Financing Receivables With Related Allowance [Member] | Commercial | Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total impaired loans	0
Impaired Financing Receivables With Related Allowance [Member] | Commercial | Asset Pledged as Collateral
Financing Receivable, Allowance for Credit Loss [Line Items]
Total impaired loans	10,091
Impaired Financing Receivables With Related Allowance [Member] | Commercial real estate - investor
Financing Receivable, Allowance for Credit Loss [Line Items]
Total impaired loans	649
Impaired Financing Receivables With Related Allowance [Member] | Commercial real estate - investor | Commercial real estate-investor
Financing Receivable, Allowance for Credit Loss [Line Items]
Total impaired loans	0
Impaired Financing Receivables With Related Allowance [Member] | Commercial real estate - investor | Equipment
Financing Receivable, Allowance for Credit Loss [Line Items]
Total impaired loans	0
Impaired Financing Receivables With Related Allowance [Member] | Commercial real estate - investor | Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total impaired loans	649
Impaired Financing Receivables With Related Allowance [Member] | Commercial real estate - investor | Asset Pledged as Collateral
Financing Receivable, Allowance for Credit Loss [Line Items]
Total impaired loans	0
Impaired Financing Receivables With Related Allowance [Member] | Commercial Real Estate-Owner
Financing Receivable, Allowance for Credit Loss [Line Items]
Total impaired loans	662
Impaired Financing Receivables With Related Allowance [Member] | Commercial Real Estate-Owner | Commercial real estate-investor
Financing Receivable, Allowance for Credit Loss [Line Items]
Total impaired loans	0
Impaired Financing Receivables With Related Allowance [Member] | Commercial Real Estate-Owner | Equipment
Financing Receivable, Allowance for Credit Loss [Line Items]
Total impaired loans	0
Impaired Financing Receivables With Related Allowance [Member] | Commercial Real Estate-Owner | Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total impaired loans	662
Impaired Financing Receivables With Related Allowance [Member] | Commercial Real Estate-Owner | Asset Pledged as Collateral
Financing Receivable, Allowance for Credit Loss [Line Items]
Total impaired loans	0
Impaired Financing Receivables With Related Allowance [Member] | Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total impaired loans	1,235	$ 294
Impaired Financing Receivables With Related Allowance [Member] | Residential real estate | Commercial real estate-investor
Financing Receivable, Allowance for Credit Loss [Line Items]
Total impaired loans	0
Impaired Financing Receivables With Related Allowance [Member] | Residential real estate | Equipment
Financing Receivable, Allowance for Credit Loss [Line Items]
Total impaired loans	0
Impaired Financing Receivables With Related Allowance [Member] | Residential real estate | Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total impaired loans	1,235
Impaired Financing Receivables With Related Allowance [Member] | Residential real estate | Asset Pledged as Collateral
Financing Receivable, Allowance for Credit Loss [Line Items]
Total impaired loans	$ 0