LOANS AND LEASES - Financial Difficulty Modifications, Payment Status (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Financing Receivable, Past Due [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	$ 200	$ 0
Financial Receivables, Financial Difficulty Modifications	12,112		$ 904
Financial Receivables, Financial Difficulty Modifications	12,112		904
Financial Asset, 1 to 29 Days Past Due
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	9,118		904
Financial Receivables, Financial Difficulty Modifications	9,118		904
Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	230		0
Financial Receivables, Financial Difficulty Modifications	230		0
Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	173		0
Financial Receivables, Financial Difficulty Modifications	173		0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	2,591		0
Financial Receivables, Financial Difficulty Modifications	2,591		0
Residential Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	1,731		889
Financial Receivables, Financial Difficulty Modifications	1,731		889
Residential Portfolio Segment [Member] | Financial Asset, 1 to 29 Days Past Due
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	1,091		889
Financial Receivables, Financial Difficulty Modifications	1,091		889
Residential Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	163		0
Financial Receivables, Financial Difficulty Modifications	163		0
Residential Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	173		0
Financial Receivables, Financial Difficulty Modifications	173		0
Residential Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	304		0
Financial Receivables, Financial Difficulty Modifications	304		0
Home equity
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	218		15
Financial Receivables, Financial Difficulty Modifications	218		15
Home equity | Financial Asset, 1 to 29 Days Past Due
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	130		15
Financial Receivables, Financial Difficulty Modifications	130		15
Home equity | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	67		0
Financial Receivables, Financial Difficulty Modifications	67		0
Home equity | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	0		0
Financial Receivables, Financial Difficulty Modifications	0		0
Home equity | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	21		0
Financial Receivables, Financial Difficulty Modifications	21		$ 0
Commercial
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	10,163
Financial Receivables, Financial Difficulty Modifications	10,163
Commercial | Financial Asset, 1 to 29 Days Past Due
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	7,897
Financial Receivables, Financial Difficulty Modifications	7,897
Commercial | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	0
Financial Receivables, Financial Difficulty Modifications	0
Commercial | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	0
Financial Receivables, Financial Difficulty Modifications	0
Commercial | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	2,266
Financial Receivables, Financial Difficulty Modifications	$ 2,266