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ALLOWANCE FOR LOAN LOSSES - Allowance Activity (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Activity in the allowance for loan losses |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period |  |  |  | $ 15,353 |  |  |  |  | $ 15,353 |  |  |  |  |
Provision (release) for loan losses | $ 1,360 | $ 1,800 | $ 1,354 | 1,111 | $ 538 | $ 893 | $ 562 | $ 324 | 5,625 | $ 2,317 | $ 2,780 |  |  |
Balance at end of period | 19,082 |  |  |  | 15,353 |  |  |  | 19,082 | 15,353 |  |  |  |
Allowance For Loan Losses |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total | 19,082 |  |  | 15,353 | 15,353 |  |  |  | 15,353 | 15,353 |  | $ 19,082 | $ 15,353 |
Business Activities Loans |  |  |  |  |  |  |  |  |  |  |  |  |  |
Activity in the allowance for loan losses |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period |  |  |  | 15,057 |  |  |  | 13,581 | 15,057 | 13,581 | 12,153 |  |  |
Charged-off loans |  |  |  |  |  |  |  |  | (1,925) | (885) | (1,382) |  |  |
Recoveries on charged-off loans |  |  |  |  |  |  |  |  | 220 | 320 | 535 |  |  |
Provision (release) for loan losses |  |  |  |  |  |  |  |  | 5,434 | 2,041 | 2,275 |  |  |
Balance at end of period | 18,786 |  |  |  | 15,057 |  |  |  | 18,786 | 15,057 | 13,581 |  |  |
Allowance For Loan Losses |  |  |  |  |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  |  |  |  |  |  |  | 434 | 1,452 | $ 611
Collectively evaluated |  |  |  |  |  |  |  |  |  |  |  | 18,352 | 13,605 | 12,970
Total | 18,786 |  |  | 15,057 | 15,057 |  |  | 13,581 | 15,057 | 15,057 | 12,153 | 18,786 | 15,057 | 13,581
Business Activities Loans | Total commercial real estate |  |  |  |  |  |  |  |  |  |  |  |  |  |
Activity in the allowance for loan losses |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period |  |  |  | 7,668 |  |  |  | 6,811 | 7,668 | 6,811 | 6,037 |  |  |
Charged-off loans |  |  |  |  |  |  |  |  | (1,036) | (212) | (417) |  |  |
Recoveries on charged-off loans |  |  |  |  |  |  |  |  | 154 | 194 | 275 |  |  |
Provision (release) for loan losses |  |  |  |  |  |  |  |  | 4,167 | 875 | 916 |  |  |
Balance at end of period | 10,953 |  |  |  | 7,668 |  |  |  | 10,953 | 7,668 | 6,811 |  |  |
Allowance For Loan Losses |  |  |  |  |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  |  |  |  |  |  |  | 366 | 1,231 | 422
Collectively evaluated |  |  |  |  |  |  |  |  |  |  |  | 10,587 | 6,437 | 6,389
Total | 10,953 |  |  | 7,668 | 7,668 |  |  | 6,811 | 10,953 | 6,811 | 6,037 | 10,953 | 7,668 | 6,811
Business Activities Loans | Total commercial and industrial |  |  |  |  |  |  |  |  |  |  |  |  |  |
Activity in the allowance for loan losses |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period |  |  |  | 3,608 |  |  |  | 2,380 | 3,608 | 2,380 | 2,373 |  |  |
Charged-off loans |  |  |  |  |  |  |  |  | (540) | (336) | (111) |  |  |
Recoveries on charged-off loans |  |  |  |  |  |  |  |  | 21 | 65 | 76 |  |  |
Provision (release) for loan losses |  |  |  |  |  |  |  |  | 288 | 1,499 | 42 |  |  |
Balance at end of period | 3,377 |  |  |  | 3,608 |  |  |  | 3,377 | 3,608 | 2,380 |  |  |
Allowance For Loan Losses |  |  |  |  |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  |  |  |  |  |  |  |  | 164 | 78
Collectively evaluated |  |  |  |  |  |  |  |  |  |  |  | 3,377 | 3,444 | 2,302
Total | 3,377 |  |  | 3,608 | 3,608 |  |  | 2,380 | 3,377 | 2,380 | 2,373 | 3,377 | 3,608 | 2,380
Business Activities Loans | Total residential real estate |  |  |  |  |  |  |  |  |  |  |  |  |  |
Activity in the allowance for loan losses |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period |  |  |  | 3,402 |  |  |  | 3,982 | 3,402 | 3,982 | 3,357 |  |  |
Charged-off loans |  |  |  |  |  |  |  |  | (43) | (109) | (225) |  |  |
Recoveries on charged-off loans |  |  |  |  |  |  |  |  |  | 55 | 166 |  |  |
Provision (release) for loan losses |  |  |  |  |  |  |  |  | 718 | (526) | 684 |  |  |
Balance at end of period | 4,077 |  |  |  | 3,402 |  |  |  | 4,077 | 3,402 | 3,982 |  |  |
Allowance For Loan Losses |  |  |  |  |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  |  |  |  |  |  |  | 67 | 57 | 111
Collectively evaluated |  |  |  |  |  |  |  |  |  |  |  | 4,010 | 3,345 | 3,871
Total | 4,077 |  |  | 3,402 | 3,402 |  |  | 3,982 | 4,077 | 3,982 | 3,357 | 4,077 | 3,402 | 3,982
Business Activities Loans | Total consumer |  |  |  |  |  |  |  |  |  |  |  |  |  |
Activity in the allowance for loan losses |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period |  |  |  | 379 |  |  |  | 408 | 379 | 408 | 386 |  |  |
Charged-off loans |  |  |  |  |  |  |  |  | (306) | (228) | (629) |  |  |
Recoveries on charged-off loans |  |  |  |  |  |  |  |  | 45 | 6 | 18 |  |  |
Provision (release) for loan losses |  |  |  |  |  |  |  |  | 261 | 193 | 633 |  |  |
Balance at end of period | 379 |  |  |  | 379 |  |  |  | 379 | 379 | 408 |  |  |
Allowance For Loan Losses |  |  |  |  |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  |  |  |  |  |  |  | 1 |  |
Collectively evaluated |  |  |  |  |  |  |  |  |  |  |  | 378 | 379 | 408
Total | 379 |  |  | 379 | 379 |  |  | 408 | 379 | 408 | 386 | 379 | 379 | 408
Acquired Loans |  |  |  |  |  |  |  |  |  |  |  |  |  |
Activity in the allowance for loan losses |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period |  |  |  | 296 |  |  |  | 285 | 296 | 285 | 172 |  |  |
Charged-off loans |  |  |  |  |  |  |  |  | (243) | (268) | (525) |  |  |
Recoveries on charged-off loans |  |  |  |  |  |  |  |  | 52 | 3 | 133 |  |  |
Provision (release) for loan losses |  |  |  |  |  |  |  |  | 191 | 276 | 505 |  |  |
Balance at end of period | 296 |  |  |  | 296 |  |  |  | 296 | 296 | 285 |  |  |
Allowance For Loan Losses |  |  |  |  |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  |  |  |  |  |  |  | 296 | 61 | 41
Collectively evaluated |  |  |  |  |  |  |  |  |  |  |  |  | 235 | 244
Total | 296 |  |  | 296 | 296 |  |  | 285 | 296 | 285 | 172 | 296 | 296 | 285
Acquired Loans | Total commercial real estate |  |  |  |  |  |  |  |  |  |  |  |  |  |
Activity in the allowance for loan losses |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period |  |  |  | 147 |  |  |  | 173 | 147 | 173 | 97 |  |  |
Charged-off loans |  |  |  |  |  |  |  |  | (101) |  | (136) |  |  |
Recoveries on charged-off loans |  |  |  |  |  |  |  |  | 19 |  | 43 |  |  |
Provision (release) for loan losses |  |  |  |  |  |  |  |  | 225 | (26) | 169 |  |  |
Balance at end of period | 290 |  |  |  | 147 |  |  |  | 290 | 147 | 173 |  |  |
Allowance For Loan Losses |  |  |  |  |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  |  |  |  |  |  |  | 290 | 12 |
Collectively evaluated |  |  |  |  |  |  |  |  |  |  |  |  | 135 | 173
Total | 290 |  |  | 147 | 147 |  |  | 173 | 147 | 147 | 97 | 290 | 147 | 173
Acquired Loans | Total commercial and industrial |  |  |  |  |  |  |  |  |  |  |  |  |  |
Activity in the allowance for loan losses |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period |  |  |  | 6 |  |  |  | 35 | 6 | 35 | 16 |  |  |
Charged-off loans |  |  |  |  |  |  |  |  | (53) | (23) | (166) |  |  |
Recoveries on charged-off loans |  |  |  |  |  |  |  |  | 9 |  | 7 |  |  |
Provision (release) for loan losses |  |  |  |  |  |  |  |  | 43 | (6) | 178 |  |  |
Balance at end of period | 5 |  |  |  | 6 |  |  |  | 5 | 6 | 35 |  |  |
Allowance For Loan Losses |  |  |  |  |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  |  |  |  |  |  |  | 5 |  |
Collectively evaluated |  |  |  |  |  |  |  |  |  |  |  |  | 6 | 35
Total | 5 |  |  | 6 | 6 |  |  | 35 | 6 | 6 | 16 | 5 | 6 | 35
Acquired Loans | Total residential real estate |  |  |  |  |  |  |  |  |  |  |  |  |  |
Activity in the allowance for loan losses |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period |  |  |  | 143 |  |  |  | 77 | 143 | 77 | 59 |  |  |
Charged-off loans |  |  |  |  |  |  |  |  | (11) | (240) | (158) |  |  |
Recoveries on charged-off loans |  |  |  |  |  |  |  |  | 13 |  |  |  |  |
Provision (release) for loan losses |  |  |  |  |  |  |  |  | (144) | 306 | 176 |  |  |
Balance at end of period | 1 |  |  |  | 143 |  |  |  | 1 | 143 | 77 |  |  |
Allowance For Loan Losses |  |  |  |  |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  |  |  |  |  |  |  | 1 | 49 | 41
Collectively evaluated |  |  |  |  |  |  |  |  |  |  |  |  | 94 | 36
Total | $ 1 |  |  | $ 143 | $ 143 |  |  | $ 77 | 143 | 143 | 59 | $ 1 | $ 143 | $ 77
Acquired Loans | Total consumer |  |  |  |  |  |  |  |  |  |  |  |  |  |
Activity in the allowance for loan losses |  |  |  |  |  |  |  |  |  |  |  |  |  |
Charged-off loans |  |  |  |  |  |  |  |  | (78) | (5) | (65) |  |  |
Recoveries on charged-off loans |  |  |  |  |  |  |  |  | 11 | 3 | 83 |  |  |
Provision (release) for loan losses |  |  |  |  |  |  |  |  | $ 67 | $ 2 | $ (18) |  |  |

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