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ALLOWANCE FOR CREDIT LOSSES AND CREDIT QUALITY - Allowance for loan losses by portfolio segment (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2021 | Sep. 30, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Post adoption of ASC 326 |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | $ 61,408 |  |  |  | $ 50,652 | $ 61,408 | $ 50,652 | $ 48,453
Provision for credit losses | $ 0 | $ 1,300 | $ (1,700) | 1,477 | $ 920 | $ 1,750 | $ 5,500 | 6,600 | 1,077 | 14,770 | 3,235
Loans charged-off |  |  |  |  |  |  |  |  | (5,983) | (5,253) | (1,910)
Recoveries |  |  |  |  |  |  |  |  | 2,221 | 1,239 | 874
Net loans (charged-off) recovered |  |  |  |  |  |  |  |  | (3,762) | (4,014) | (1,036)
Ending balance | 67,773 |  |  |  | 61,408 |  |  |  | 67,773 | 61,408 | 50,652
Impact of ASC 326 Adoption |  |  |  |  |  |  |  |  |  |  |
Post adoption of ASC 326 |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 9,050 |  |  |  |  | 9,050 |  |
Ending balance |  |  |  |  | 9,050 |  |  |  |  | 9,050 |
Commercial and Industrial |  |  |  |  |  |  |  |  |  |  |
Post adoption of ASC 326 |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 28,333 |  |  |  |  | 28,333 |  |
Ending balance |  |  |  |  | 28,333 |  |  |  |  | 28,333 |
Commercial and Industrial | Total commercial loans |  |  |  |  |  |  |  |  |  |  |
Post adoption of ASC 326 |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 28,333 |  |  |  | 25,789 | 28,333 | 25,789 | 22,518
Provision for credit losses |  |  |  |  |  |  |  |  | 1,966 | 6,640 | 4,259
Loans charged-off |  |  |  |  |  |  |  |  | (5,575) | (4,524) | (1,447)
Recoveries |  |  |  |  |  |  |  |  | 1,559 | 428 | 459
Net loans (charged-off) recovered |  |  |  |  |  |  |  |  | (4,016) | (4,096) | (988)
Ending balance | 30,595 |  |  |  | 28,333 |  |  |  | 30,595 | 28,333 | 25,789
Commercial and Industrial | Total commercial loans | Impact of ASC 326 Adoption |  |  |  |  |  |  |  |  |  |  |
Post adoption of ASC 326 |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 4,312 |  |  |  |  | 4,312 |  |
Ending balance |  |  |  |  | 4,312 |  |  |  |  | 4,312 |
Commercial Real Estate and Multi-family Residential |  |  |  |  |  |  |  |  |  |  |
Post adoption of ASC 326 |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 22,907 |  |  |  |  | 22,907 |  |
Ending balance |  |  |  |  | 22,907 |  |  |  |  | 22,907 |
Commercial Real Estate and Multi-family Residential | Total commercial loans |  |  |  |  |  |  |  |  |  |  |
Post adoption of ASC 326 |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 22,907 |  |  |  | 15,796 | 22,907 | 15,796 | 15,393
Provision for credit losses |  |  |  |  |  |  |  |  | (632) | 6,868 | 259
Loans charged-off |  |  |  |  |  |  |  |  | (70) | (72) | (17)
Recoveries |  |  |  |  |  |  |  |  | 14 | 315 | 161
Net loans (charged-off) recovered |  |  |  |  |  |  |  |  | (56) | 243 | 144
Ending balance | 26,535 |  |  |  | 22,907 |  |  |  | 26,535 | 22,907 | 15,796
Commercial Real Estate and Multi-family Residential | Total commercial loans | Impact of ASC 326 Adoption |  |  |  |  |  |  |  |  |  |  |
Post adoption of ASC 326 |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 4,316 |  |  |  |  | 4,316 |  |
Ending balance |  |  |  |  | 4,316 |  |  |  |  | 4,316 |
Agri-business and Agricultural |  |  |  |  |  |  |  |  |  |  |
Post adoption of ASC 326 |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 3,043 |  |  |  |  | 3,043 |  |
Ending balance |  |  |  |  | 3,043 |  |  |  |  | 3,043 |
Agri-business and Agricultural | Total commercial loans |  |  |  |  |  |  |  |  |  |  |
Post adoption of ASC 326 |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 3,043 |  |  |  | 3,869 | 3,043 | 3,869 | 4,305
Provision for credit losses |  |  |  |  |  |  |  |  | 611 | (826) | (444)
Loans charged-off |  |  |  |  |  |  |  |  | 0 | 0 | 0
Recoveries |  |  |  |  |  |  |  |  | 320 | 0 | 8
Net loans (charged-off) recovered |  |  |  |  |  |  |  |  | 320 | 0 | 8
Ending balance | 5,034 |  |  |  | 3,043 |  |  |  | 5,034 | 3,043 | 3,869
Agri-business and Agricultural | Total commercial loans | Impact of ASC 326 Adoption |  |  |  |  |  |  |  |  |  |  |
Post adoption of ASC 326 |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 1,060 |  |  |  |  | 1,060 |  |
Ending balance |  |  |  |  | 1,060 |  |  |  |  | 1,060 |
Other Commercial |  |  |  |  |  |  |  |  |  |  |
Post adoption of ASC 326 |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 416 |  |  |  |  | 416 |  |
Ending balance |  |  |  |  | 416 |  |  |  |  | 416 |
Other Commercial | Total commercial loans |  |  |  |  |  |  |  |  |  |  |
Post adoption of ASC 326 |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 416 |  |  |  | 447 | 416 | 447 | 368
Provision for credit losses |  |  |  |  |  |  |  |  | (211) | (31) | 79
Loans charged-off |  |  |  |  |  |  |  |  | 0 | 0 | 0
Recoveries |  |  |  |  |  |  |  |  | 0 | 0 | 0
Net loans (charged-off) recovered |  |  |  |  |  |  |  |  | 0 | 0 | 0
Ending balance | 1,146 |  |  |  | 416 |  |  |  | 1,146 | 416 | 447
Other Commercial | Total commercial loans | Impact of ASC 326 Adoption |  |  |  |  |  |  |  |  |  |  |
Post adoption of ASC 326 |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 941 |  |  |  |  | 941 |  |
Ending balance |  |  |  |  | 941 |  |  |  |  | 941 |
Consumer 1-4 Family Mortgage |  |  |  |  |  |  |  |  |  |  |
Post adoption of ASC 326 |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 2,619 |  |  |  |  | 2,619 |  |
Ending balance |  |  |  |  | 2,619 |  |  |  |  | 2,619 |
Consumer 1-4 Family Mortgage | Other consumer loans |  |  |  |  |  |  |  |  |  |  |
Post adoption of ASC 326 |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 2,619 |  |  |  | 2,086 | 2,619 | 2,086 | 2,292
Provision for credit losses |  |  |  |  |  |  |  |  | (777) | 341 | (219)
Loans charged-off |  |  |  |  |  |  |  |  | (51) | (141) | (110)
Recoveries |  |  |  |  |  |  |  |  | 122 | 333 | 123
Net loans (charged-off) recovered |  |  |  |  |  |  |  |  | 71 | 192 | 13
Ending balance | 2,866 |  |  |  | 2,619 |  |  |  | 2,866 | 2,619 | 2,086
Consumer 1-4 Family Mortgage | Other consumer loans | Impact of ASC 326 Adoption |  |  |  |  |  |  |  |  |  |  |
Post adoption of ASC 326 |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 953 |  |  |  |  | 953 |  |
Ending balance |  |  |  |  | 953 |  |  |  |  | 953 |
Other Consumer |  |  |  |  |  |  |  |  |  |  |
Post adoption of ASC 326 |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 951 |  |  |  |  | 951 |  |
Ending balance |  |  |  |  | 951 |  |  |  |  | 951 |
Other Consumer | Other consumer loans |  |  |  |  |  |  |  |  |  |  |
Post adoption of ASC 326 |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 951 |  |  |  | 345 | 951 | 345 | 283
Provision for credit losses |  |  |  |  |  |  |  |  | (72) | 959 | 275
Loans charged-off |  |  |  |  |  |  |  |  | (287) | (516) | (336)
Recoveries |  |  |  |  |  |  |  |  | 206 | 163 | 123
Net loans (charged-off) recovered |  |  |  |  |  |  |  |  | (81) | (353) | (213)
Ending balance | 1,147 |  |  |  | 951 |  |  |  | 1,147 | 951 | 345
Other Consumer | Other consumer loans | Impact of ASC 326 Adoption |  |  |  |  |  |  |  |  |  |  |
Post adoption of ASC 326 |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 349 |  |  |  |  | 349 |  |
Ending balance |  |  |  |  | 349 |  |  |  |  | 349 |
Unallocated |  |  |  |  |  |  |  |  |  |  |
Post adoption of ASC 326 |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 3,139 |  |  |  | $ 2,320 | 3,139 | 2,320 | 3,294
Provision for credit losses |  |  |  |  |  |  |  |  | 192 | 819 | (974)
Loans charged-off |  |  |  |  |  |  |  |  | 0 | 0 | 0
Recoveries |  |  |  |  |  |  |  |  | 0 | 0 | 0
Net loans (charged-off) recovered |  |  |  |  |  |  |  |  | 0 | 0 | 0
Ending balance | $ 450 |  |  |  | 3,139 |  |  |  | 450 | 3,139 | $ 2,320
Unallocated | Impact of ASC 326 Adoption |  |  |  |  |  |  |  |  |  |  |
Post adoption of ASC 326 |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | $ (2,881) |  |  |  |  | $ (2,881) |  |
Ending balance |  |  |  |  | $ (2,881) |  |  |  |  | $ (2,881) |

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- Definition Amount excluding accrued interest, of allowance for credit loss on financing receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 + Details
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- Definition Amount, after recovery, of writeoff of financing receivable, charged against allowance for credit loss. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI http://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (4) + Details
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