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ALLOWANCE FOR LOAN LOSSES AND CREDIT QUALITY - Balance In The Allowance For Loan Losses And The Recorded Investment In Loans By Portfolio Management (Details) - USD ($) $ in Thousands | Sep. 30, 2020 | Jun. 30, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Dec. 31, 2018
--- | --- | --- | --- | --- | --- | ---
Ending allowance balance attributable to loans: |  |  |  |  |  |
Individually evaluated for impairment | $ 8,050 |  | $ 10,384 |  |  |
Collectively evaluated for impairment | 52,697 |  | 40,268 |  |  |
Total ending allowance balance | 60,747 | $ 59,019 | 50,652 | $ 50,628 | $ 50,564 | $ 48,453
Loans: |  |  |  |  |  |
Loans individually evaluated for impairment | 22,486 |  | 27,829 |  |  |
Loans collectively evaluated for impairment | 4,567,438 |  | 4,037,999 |  |  |
Total ending loans balance | 4,589,924 |  | 4,065,828 |  |  |
Commercial and Industrial Loans [Member] |  |  |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |  |  |
Individually evaluated for impairment | 6,345 |  | 9,324 |  |  |
Collectively evaluated for impairment | 22,018 |  | 16,465 |  |  |
Total ending allowance balance | 28,363 | 26,744 | 25,789 | 24,977 | 25,024 | 22,518
Loans: |  |  |  |  |  |
Loans individually evaluated for impairment | 13,591 |  | 19,580 |  |  |
Loans collectively evaluated for impairment | 1,824,156 |  | 1,407,246 |  |  |
Total ending loans balance | 1,837,747 |  | 1,426,826 |  |  |
Commercial Real Estate and Multi-family Residential Loans [Member] |  |  |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |  |  |
Individually evaluated for impairment | 1,313 |  | 538 |  |  |
Collectively evaluated for impairment | 20,102 |  | 15,258 |  |  |
Total ending allowance balance | 21,415 | 21,063 | 15,796 | 16,010 | 15,492 | 15,393
Loans: |  |  |  |  |  |
Loans individually evaluated for impairment | 6,030 |  | 4,998 |  |  |
Loans collectively evaluated for impairment | 1,851,790 |  | 1,665,842 |  |  |
Total ending loans balance | 1,857,820 |  | 1,670,840 |  |  |
Agri-business and Agricultural Loans [Member] |  |  |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |  |  |
Individually evaluated for impairment | 64 |  | 90 |  |  |
Collectively evaluated for impairment | 3,033 |  | 3,779 |  |  |
Total ending allowance balance | 3,097 | 3,408 | 3,869 | 3,904 | 3,906 | 4,305
Loans: |  |  |  |  |  |
Loans individually evaluated for impairment | 428 |  | 445 |  |  |
Loans collectively evaluated for impairment | 337,736 |  | 379,186 |  |  |
Total ending loans balance | 338,164 |  | 379,631 |  |  |
Other Commercial |  |  |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |  |  |
Individually evaluated for impairment | 0 |  | 0 |  |  |
Collectively evaluated for impairment | 572 |  | 447 |  |  |
Total ending allowance balance | 572 | 542 | 447 | 383 | 355 | 368
Loans: |  |  |  |  |  |
Loans individually evaluated for impairment | 0 |  | 0 |  |  |
Loans collectively evaluated for impairment | 97,428 |  | 112,166 |  |  |
Total ending loans balance | 97,428 |  | 112,166 |  |  |
Consumer 1-4 Family Mortgage Loans [Member] |  |  |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |  |  |
Individually evaluated for impairment | 328 |  | 426 |  |  |
Collectively evaluated for impairment | 2,990 |  | 1,660 |  |  |
Total ending allowance balance | 3,318 | 3,434 | 2,086 | 2,120 | 2,153 | 2,292
Loans: |  |  |  |  |  |
Loans individually evaluated for impairment | 2,437 |  | 2,789 |  |  |
Loans collectively evaluated for impairment | 351,287 |  | 375,210 |  |  |
Total ending loans balance | 353,724 |  | 377,999 |  |  |
Other Consumer |  |  |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |  |  |
Individually evaluated for impairment | 0 |  | 6 |  |  |
Collectively evaluated for impairment | 830 |  | 339 |  |  |
Total ending allowance balance | 830 | 774 | 345 | 304 | 289 | 283
Loans: |  |  |  |  |  |
Loans individually evaluated for impairment | 0 |  | 17 |  |  |
Loans collectively evaluated for impairment | 105,041 |  | 98,349 |  |  |
Total ending loans balance | 105,041 |  | 98,366 |  |  |
Unallocated |  |  |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |  |  |
Individually evaluated for impairment | 0 |  | 0 |  |  |
Collectively evaluated for impairment | 3,152 |  | 2,320 |  |  |
Total ending allowance balance | 3,152 | $ 3,054 | 2,320 | $ 2,930 | $ 3,345 | $ 3,294
Loans: |  |  |  |  |  |
Loans individually evaluated for impairment | 0 |  | 0 |  |  |
Loans collectively evaluated for impairment | 0 |  | 0 |  |  |
Total ending loans balance | $ 0 |  | $ 0 |  |  |

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