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FAIR VALUES - Nonreccurring (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans individually analyzed	$ 6,471	$ 8,035
Commercial Mortgages
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans individually analyzed	4,959	5,968
Residential Mortgages
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans individually analyzed	0	0
Consumer Loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans individually analyzed	0	0
Non-recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans individually analyzed	884
Non-recurring | Commercial and industrial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans individually analyzed	11	62
Non-recurring | Commercial mortgages, other | Commercial Mortgages | Commercial mortgages, other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans individually analyzed	873
Non-recurring | Other real estate owned:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total other real estate owned, net	411	326
Non-recurring | Other real estate owned: | Residential Mortgages
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total other real estate owned, net	126	116
Non-recurring | Other real estate owned: | Consumer Loans | Home equity lines and loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total other real estate owned, net	285	210
Non-recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans individually analyzed	0
Non-recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Commercial and industrial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans individually analyzed	0	0
Non-recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Commercial mortgages, other | Commercial Mortgages | Commercial mortgages, other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans individually analyzed	0
Non-recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other real estate owned:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total other real estate owned, net	0	0
Non-recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other real estate owned: | Residential Mortgages
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total other real estate owned, net	0	0
Non-recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other real estate owned: | Consumer Loans | Home equity lines and loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total other real estate owned, net	0	0
Non-recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans individually analyzed	0
Non-recurring | Significant Other Observable Inputs (Level 2) | Commercial and industrial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans individually analyzed	0	0
Non-recurring | Significant Other Observable Inputs (Level 2) | Commercial mortgages, other | Commercial Mortgages | Commercial mortgages, other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans individually analyzed	0
Non-recurring | Significant Other Observable Inputs (Level 2) | Other real estate owned:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total other real estate owned, net	0	0
Non-recurring | Significant Other Observable Inputs (Level 2) | Other real estate owned: | Residential Mortgages
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total other real estate owned, net	0	0
Non-recurring | Significant Other Observable Inputs (Level 2) | Other real estate owned: | Consumer Loans | Home equity lines and loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total other real estate owned, net	0	0
Non-recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans individually analyzed	884
Non-recurring | Significant Unobservable Inputs (Level 3) | Commercial and industrial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans individually analyzed	11	62
Non-recurring | Significant Unobservable Inputs (Level 3) | Commercial mortgages, other | Commercial Mortgages | Commercial mortgages, other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans individually analyzed	873
Non-recurring | Significant Unobservable Inputs (Level 3) | Other real estate owned:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total other real estate owned, net	411	326
Non-recurring | Significant Unobservable Inputs (Level 3) | Other real estate owned: | Residential Mortgages
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total other real estate owned, net	126	116
Non-recurring | Significant Unobservable Inputs (Level 3) | Other real estate owned: | Consumer Loans | Home equity lines and loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total other real estate owned, net	$ 285	$ 210

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Amount of financing receivable individually evaluated for credit loss. Excludes financing receivable collectively evaluated for credit loss.

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