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LOANS - Troubled Debt Restructurings (TDRs) (Details) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2021 USD ($) loan borrower | Sep. 30, 2020 USD ($) loan | Dec. 31, 2020 USD ($) loan borrower
Financing Receivable, Modifications [Line Items] |  |  |
TDRs, number | loan | 233 |  | 247
TDRs, amount | $ 7,078 |  | $ 6,984
Loans modified in TDR during the year, number | loan | 20 | 25 |
Loans modified in TDR during the year, amount | $ 2,733 | $ 835 |
Number of Borrowers Representing $75.6 Million in Outstanding Loan Balances | borrower | 4 |  |
Outstanding Loan Balances of 47 Number of Borrowers | $ 3,900 |  |
Percentage of total loan outstanding | 0.10% |  | 0.90%
Number of Business Borrowers Representing $75.1 Million in Outstanding Loan Balances | borrower | 3 |  |
Outstanding loan balances of 42 number of business borrowers | $ 3,800 |  |
Number of Consumer Borrowers Representing $0.5 Million in Outstanding Loan Balances | borrower | 1 |  |
Outstanding Loan Balances of 5 Number of Consumer Borrowers | $ 100 |  |
Number of Borrowers Representing $66.5 Million in Outstanding Loan Balances | borrower |  |  | 74
Outstanding Loan Balances of 74 Number of Borrowers |  |  | $ 66,500
Number of Borrowers Representing $65.7 Million in Outstanding Loan Balances | borrower |  |  | 63
Outstanding Loan Balances of 63 Number of Borrowers |  |  | $ 65,700
Number of Borrowers Representing $0.8 Million in Outstanding Loan Balances | borrower |  |  | 11
Outstanding Loan Balances of 11 Number of Borrowers |  |  | $ 800
Minimum [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Threshold balance of loan individually evaluated for impairment | 500 |  |
Maximum [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Threshold balance of TDR loans collectively included in general loan loss allocation and qualitative review | $ 500 |  |
Nonaccrual [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
TDRs, number | loan | 82 |  | 73
TDRs, amount | $ 3,530 |  | $ 3,227
Accruing [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
TDRs, number | loan | 151 |  | 174
TDRs, amount | $ 3,548 |  | $ 3,757
Commercial Portfolio Segment [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Loans modified in TDR during the year, number | loan | 43 | 46 |
Loans modified in TDR during the year, amount | $ 3,348 | $ 1,707 |
Commercial Portfolio Segment [Member] | Business Lending [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
TDRs, number | loan | 15 |  | 10
TDRs, amount | $ 633 |  | $ 720
Loans modified in TDR during the year, number | loan | 5 | 0 |
Loans modified in TDR during the year, amount | $ 1,925 | $ 0 |
Commercial Portfolio Segment [Member] | Business Lending [Member] | Nonaccrual [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
TDRs, number | loan | 10 |  | 6
TDRs, amount | $ 458 |  | $ 529
Commercial Portfolio Segment [Member] | Business Lending [Member] | Accruing [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
TDRs, number | loan | 5 |  | 4
TDRs, amount | $ 175 |  | $ 191
Commercial Portfolio Segment [Member] | Consumer Mortgage [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Loans modified in TDR during the year, number | loan | 19 | 17 |
Loans modified in TDR during the year, amount | $ 1,193 | $ 1,378 |
Commercial Portfolio Segment [Member] | Consumer Indirect [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Loans modified in TDR during the year, number | loan | 17 | 25 |
Loans modified in TDR during the year, amount | $ 222 | $ 261 |
Commercial Portfolio Segment [Member] | Consumer Direct [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Loans modified in TDR during the year, number | loan | 2 | 2 |
Loans modified in TDR during the year, amount | $ 8 | $ 12 |
Commercial Portfolio Segment [Member] | Home Equity [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Loans modified in TDR during the year, number | loan | 0 | 2 |
Loans modified in TDR during the year, amount | $ 0 | $ 56 |
Residential Portfolio Segment [Member] | Consumer Mortgage [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
TDRs, number | loan | 106 |  | 104
TDRs, amount | $ 5,135 |  | $ 4,679
Loans modified in TDR during the year, number | loan | 9 | 8 |
Loans modified in TDR during the year, amount | $ 728 | $ 646 |
Residential Portfolio Segment [Member] | Consumer Mortgage [Member] | Nonaccrual [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
TDRs, number | loan | 62 |  | 56
TDRs, amount | $ 2,828 |  | $ 2,413
Residential Portfolio Segment [Member] | Consumer Mortgage [Member] | Accruing [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
TDRs, number | loan | 44 |  | 48
TDRs, amount | $ 2,307 |  | $ 2,266
Consumer Portfolio Segment [Member] | Consumer Indirect [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
TDRs, number | loan | 73 |  | 86
TDRs, amount | $ 816 |  | $ 951
Loans modified in TDR during the year, number | loan | 5 | 14 |
Loans modified in TDR during the year, amount | $ 78 | $ 131 |
Consumer Portfolio Segment [Member] | Consumer Indirect [Member] | Nonaccrual [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
TDRs, number | loan | 0 |  | 0
TDRs, amount | $ 0 |  | $ 0
Consumer Portfolio Segment [Member] | Consumer Indirect [Member] | Accruing [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
TDRs, number | loan | 73 |  | 86
TDRs, amount | $ 816 |  | $ 951
Consumer Portfolio Segment [Member] | Consumer Direct [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
TDRs, number | loan | 17 |  | 23
TDRs, amount | $ 10 |  | $ 85
Loans modified in TDR during the year, number | loan | 1 | 1 |
Loans modified in TDR during the year, amount | $ 2 | $ 2 |
Consumer Portfolio Segment [Member] | Consumer Direct [Member] | Nonaccrual [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
TDRs, number | loan | 0 |  | 0
TDRs, amount | $ 0 |  | $ 0
Consumer Portfolio Segment [Member] | Consumer Direct [Member] | Accruing [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
TDRs, number | loan | 17 |  | 23
TDRs, amount | $ 10 |  | $ 85
Consumer Portfolio Segment [Member] | Home Equity [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
TDRs, number | loan | 22 |  | 24
TDRs, amount | $ 484 |  | $ 549
Loans modified in TDR during the year, number | loan | 0 | 2 |
Loans modified in TDR during the year, amount | $ 0 | $ 56 |
Consumer Portfolio Segment [Member] | Home Equity [Member] | Nonaccrual [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
TDRs, number | loan | 10 |  | 11
TDRs, amount | $ 244 |  | $ 285
Consumer Portfolio Segment [Member] | Home Equity [Member] | Accruing [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
TDRs, number | loan | 12 |  | 13
TDRs, amount | $ 240 |  | $ 264

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