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ALLOWANCE FOR CREDIT LOSSES - Credit risk profile of loans (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current period gross charge offs, Total | $ 15,496 | $ 15,706 | $ 8,216
Performing |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current year | 348,183 | 424,209 |
Prior year | 317,948 | 217,824 |
Two years before current year | 151,284 | 145,349 |
Three years before current year | 91,864 | 54,134 |
Four years before current year | 33,181 | 35,258 |
Prior | 131,427 | 129,134 |
Revolving Loans | 72,484 | 69,873 |
Total loans | 1,146,371 | 1,075,781 |
Nonperforming Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current year | 232 | 937 |
Prior year | 1,189 | 990 |
Two years before current year | 756 | 681 |
Three years before current year | 757 | 932 |
Four years before current year | 598 | 366 |
Prior | 1,735 | 2,040 |
Revolving Loans | 1 | 178 |
Total loans | 5,268 | 6,124 |
Total other loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current year | 348,415 | 425,146 |
Prior year | 319,137 | 218,814 |
Two years before current year | 152,040 | 146,030 |
Three years before current year | 92,621 | 55,066 |
Four years before current year | 33,779 | 35,624 |
Prior | 133,162 | 131,174 |
Revolving Loans | 72,485 | 70,051 |
Total loans | 1,151,639 | 1,081,905 |
Residential | First Liens [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current year | 49,146 | 71,713 |
Prior year | 71,073 | 70,197 |
Two years before current year | 65,232 | 45,080 |
Three years before current year | 36,816 | 17,109 |
Four years before current year | 15,242 | 20,358 |
Prior | 119,591 | 119,270 |
Revolving Loans | 1,066 | 3,245 |
Total loans | 358,166 | 346,972 |
Current period gross charge offs, Prior | 167 |  |
Current period gross charge offs, Total | 167 |  |
Residential | First Liens [Member] | Performing |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current year | 49,146 | 71,607 |
Prior year | 70,952 | 70,197 |
Two years before current year | 65,232 | 45,080 |
Three years before current year | 36,751 | 16,968 |
Four years before current year | 15,185 | 20,258 |
Prior | 118,087 | 117,488 |
Revolving Loans | 1,066 | 3,245 |
Total loans | 356,419 | 344,843 |
Residential | First Liens [Member] | Nonperforming Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current year |  | 106 |
Prior year | 121 |  |
Three years before current year | 65 | 141 |
Four years before current year | 57 | 100 |
Prior | 1,504 | 1,782 |
Total loans | 1,747 | 2,129 |
Residential | Home Equity |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current year | 61 | 1,995 |
Prior year | 90 | 943 |
Two years before current year |  | 86 |
Three years before current year | 24 | 115 |
Four years before current year | 378 | 69 |
Prior | 926 | 860 |
Revolving Loans | 64,102 | 60,051 |
Total loans | 65,581 | 64,119 |
Residential | Home Equity | Performing |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current year | 61 | 1,995 |
Prior year | 68 | 943 |
Two years before current year |  | 8 |
Three years before current year | 7 | 115 |
Four years before current year | 378 | 55 |
Prior | 866 | 820 |
Revolving Loans | 64,102 | 59,875 |
Total loans | 65,482 | 63,811 |
Residential | Home Equity | Nonperforming Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Prior year | 22 |  |
Two years before current year |  | 78 |
Three years before current year | 17 |  |
Four years before current year |  | 14 |
Prior | 60 | 40 |
Revolving Loans |  | 176 |
Total loans | 99 | 308 |
Residential | Junior Liens [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current year | 15,050 | 19,074 |
Prior year | 15,484 | 10,489 |
Two years before current year | 8,293 | 7,584 |
Three years before current year | 5,661 | 5,920 |
Four years before current year | 4,280 | 5,505 |
Prior | 8,197 | 6,336 |
Revolving Loans | 1,698 | 1,928 |
Total loans | 58,663 | 56,836 |
Current period gross charge offs, 2019 | 24 |  |
Current period gross charge offs, Prior | 24 |  |
Current period gross charge offs, Total | 48 |  |
Residential | Junior Liens [Member] | Performing |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current year | 15,050 | 19,074 |
Prior year | 15,431 | 10,485 |
Two years before current year | 8,248 | 7,507 |
Three years before current year | 5,557 | 5,830 |
Four years before current year | 4,280 | 5,366 |
Prior | 8,094 | 6,195 |
Revolving Loans | 1,698 | 1,928 |
Total loans | 58,358 | 56,385 |
Residential | Junior Liens [Member] | Nonperforming Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Prior year | 53 | 4 |
Two years before current year | 45 | 77 |
Three years before current year | 104 | 90 |
Four years before current year |  | 139 |
Prior | 103 | 141 |
Total loans | 305 | 451 |
Residential | All Other Residential |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current year | 6,432 | 11,542 |
Prior year | 9,477 | 9,923 |
Two years before current year | 3,146 | 501 |
Three years before current year | 421 | 1,340 |
Four years before current year | 1,031 | 533 |
Prior | 1,549 | 1,600 |
Revolving Loans | 415 |  |
Total loans | 22,471 | 25,439 |
Current period gross charge offs, Prior | 1 |  |
Current period gross charge offs, Total | 1 |  |
Residential | All Other Residential | Performing |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current year | 6,432 | 11,542 |
Prior year | 9,477 | 9,923 |
Two years before current year | 3,100 | 501 |
Three years before current year | 421 | 915 |
Four years before current year | 641 | 498 |
Prior | 1,511 | 1,582 |
Revolving Loans | 415 |  |
Total loans | 21,997 | 24,961 |
Residential | All Other Residential | Nonperforming Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Two years before current year | 46 |  |
Three years before current year |  | 425 |
Four years before current year | 390 | 35 |
Prior | 38 | 18 |
Total loans | 474 | 478 |
Residential | Motor Vehicle |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current period gross charge offs, 2023 | 841 |  |
Current period gross charge offs, 2022 | 7,722 |  |
Current period gross charge offs, 2021 | 3,101 |  |
Current period gross charge offs, 2020 | 1,448 |  |
Current period gross charge offs, 2019 | 499 |  |
Current period gross charge offs, Prior | 174 |  |
Current period gross charge offs, Total | 13,785 |  |
Residential | All Other Consumer |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current period gross charge offs, 2023 | 61 |  |
Current period gross charge offs, 2022 | 213 |  |
Current period gross charge offs, 2021 | 61 |  |
Current period gross charge offs, 2020 | 37 |  |
Current period gross charge offs, 2019 | 3 |  |
Current period gross charge offs, Prior | 5 |  |
Current period gross charge offs, Revolving Loans | 149 |  |
Current period gross charge offs, Total | 529 |  |
Consumer | Motor Vehicle |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current year | 265,165 | 307,378 |
Prior year | 216,098 | 119,101 |
Two years before current year | 71,446 | 88,581 |
Three years before current year | 47,471 | 29,241 |
Four years before current year | 12,172 | 8,718 |
Prior | 2,207 | 2,277 |
Revolving Loans |  | 6 |
Total loans | 614,559 | 555,302 |
Consumer | Motor Vehicle | Performing |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current year | 264,933 | 306,565 |
Prior year | 215,125 | 118,362 |
Two years before current year | 70,926 | 88,144 |
Three years before current year | 46,939 | 29,004 |
Four years before current year | 12,038 | 8,652 |
Prior | 2,177 | 2,230 |
Revolving Loans |  | 6 |
Total loans | 612,138 | 552,963 |
Consumer | Motor Vehicle | Nonperforming Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current year | 232 | 813 |
Prior year | 973 | 739 |
Two years before current year | 520 | 437 |
Three years before current year | 532 | 237 |
Four years before current year | 134 | 66 |
Prior | 30 | 47 |
Total loans | 2,421 | 2,339 |
Consumer | All Other Consumer |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current year | 12,561 | 13,444 |
Prior year | 6,915 | 8,161 |
Two years before current year | 3,923 | 4,198 |
Three years before current year | 2,228 | 1,341 |
Four years before current year | 676 | 441 |
Prior | 692 | 831 |
Revolving Loans | 5,204 | 4,821 |
Total loans | 32,199 | 33,237 |
Consumer | All Other Consumer | Performing |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current year | 12,561 | 13,426 |
Prior year | 6,895 | 7,914 |
Two years before current year | 3,778 | 4,109 |
Three years before current year | 2,189 | 1,302 |
Four years before current year | 659 | 429 |
Prior | 692 | 819 |
Revolving Loans | 5,203 | 4,819 |
Total loans | 31,977 | 32,818 |
Consumer | All Other Consumer | Nonperforming Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current year |  | 18 |
Prior year | 20 | 247 |
Two years before current year | 145 | 89 |
Three years before current year | 39 | 39 |
Four years before current year | 17 | 12 |
Prior |  | 12 |
Revolving Loans | 1 | 2 |
Total loans | $ 222 | $ 419 |

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