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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Troubled Debt Restructurings (TDRs) (Details) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2022 USD ($) loan | Jun. 30, 2021 USD ($) loan | Jun. 30, 2022 USD ($) loan | Jun. 30, 2021 USD ($) loan | Dec. 31, 2021 USD ($) loan
Financing Receivable, Modifications [Line Items] |  |  |  |  |
TDRs, number | loan | 209 |  | 209 |  | 232
TDRs, amount | $ 6,031 |  | $ 6,031 |  | $ 8,239
Loans modified in TDR during the year, number | loan | 5 | 16 | 13 | 26 |
Loans modified in TDR during the year, amount | $ 122 | $ 482 | $ 347 | $ 657 |
Minimum |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Threshold balance of loan individually evaluated for impairment | $ 500 |  | $ 500 |  |
Nonaccrual [Member] |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
TDRs, number | loan | 68 |  | 68 |  | 81
TDRs, amount | $ 2,669 |  | $ 2,669 |  | $ 3,940
Accruing [Member] |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
TDRs, number | loan | 141 |  | 141 |  | 151
TDRs, amount | $ 3,362 |  | $ 3,362 |  | $ 4,299
Commercial Portfolio Segment | Business Lending |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
TDRs, number | loan | 4 |  | 4 |  | 14
TDRs, amount | $ 426 |  | $ 426 |  | $ 1,822
Loans modified in TDR during the year, number | loan | 0 | 0 | 0 | 0 |
Loans modified in TDR during the year, amount | $ 0 | $ 0 | $ 0 | $ 0 |
Commercial Portfolio Segment | Business Lending | Nonaccrual [Member] |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
TDRs, number | loan | 1 |  | 1 |  | 10
TDRs, amount | $ 135 |  | $ 135 |  | $ 1,011
Commercial Portfolio Segment | Business Lending | Accruing [Member] |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
TDRs, number | loan | 3 |  | 3 |  | 4
TDRs, amount | $ 291 |  | $ 291 |  | $ 811
Residential Portfolio Segment | Consumer Mortgage |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
TDRs, number | loan | 104 |  | 104 |  | 108
TDRs, amount | $ 4,549 |  | $ 4,549 |  | $ 5,114
Loans modified in TDR during the year, number | loan | 1 | 7 | 5 | 10 |
Loans modified in TDR during the year, amount | $ 89 | $ 366 | $ 280 | $ 474 |
Residential Portfolio Segment | Consumer Mortgage | Nonaccrual [Member] |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
TDRs, number | loan | 58 |  | 58 |  | 61
TDRs, amount | $ 2,412 |  | $ 2,412 |  | $ 2,694
Residential Portfolio Segment | Consumer Mortgage | Accruing [Member] |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
TDRs, number | loan | 46 |  | 46 |  | 47
TDRs, amount | $ 2,137 |  | $ 2,137 |  | $ 2,420
Consumer Portfolio Segment | Consumer Indirect |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
TDRs, number | loan | 65 |  | 65 |  | 72
TDRs, amount | $ 708 |  | $ 708 |  | $ 829
Loans modified in TDR during the year, number | loan | 3 | 9 | 7 | 15 |
Loans modified in TDR during the year, amount | $ 26 | $ 116 | $ 60 | $ 177 |
Consumer Portfolio Segment | Consumer Indirect | Nonaccrual [Member] |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
TDRs, number | loan | 0 |  | 0 |  | 0
TDRs, amount | $ 0 |  | $ 0 |  | $ 0
Consumer Portfolio Segment | Consumer Indirect | Accruing [Member] |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
TDRs, number | loan | 65 |  | 65 |  | 72
TDRs, amount | $ 708 |  | $ 708 |  | $ 829
Consumer Portfolio Segment | Consumer Direct |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
TDRs, number | loan | 15 |  | 15 |  | 16
TDRs, amount | $ 1 |  | $ 1 |  | $ 7
Loans modified in TDR during the year, number | loan | 0 | 0 | 0 | 1 |
Loans modified in TDR during the year, amount | $ 0 | $ 0 | $ 0 | $ 6 |
Consumer Portfolio Segment | Consumer Direct | Nonaccrual [Member] |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
TDRs, number | loan | 0 |  | 0 |  | 0
TDRs, amount | $ 0 |  | $ 0 |  | $ 0
Consumer Portfolio Segment | Consumer Direct | Accruing [Member] |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
TDRs, number | loan | 15 |  | 15 |  | 16
TDRs, amount | $ 1 |  | $ 1 |  | $ 7
Consumer Portfolio Segment | Home Equity |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
TDRs, number | loan | 21 |  | 21 |  | 22
TDRs, amount | $ 347 |  | $ 347 |  | $ 467
Loans modified in TDR during the year, number | loan | 1 | 0 | 1 | 0 |
Loans modified in TDR during the year, amount | $ 7 | $ 0 | $ 7 | $ 0 |
Consumer Portfolio Segment | Home Equity | Nonaccrual [Member] |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
TDRs, number | loan | 9 |  | 9 |  | 10
TDRs, amount | $ 122 |  | $ 122 |  | $ 235
Consumer Portfolio Segment | Home Equity | Accruing [Member] |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
TDRs, number | loan | 12 |  | 12 |  | 12
TDRs, amount | $ 225 |  | $ 225 |  | $ 232

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