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ALLOWANCE FOR CREDIT LOSSES AND CREDIT QUALITY - Balance In The Allowance For Loan Losses And The Recorded Investment In Loans By Portfolio Management (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | --- | --- | ---
Ending allowance balance attributable to loans: |  |  |  |  |
Individually evaluated for impairment | $ 8,041 |  |  |  |
Collectively evaluated for impairment | 53,367 |  |  |  |
Total ending allowance balance | 61,408 | [1] | $ 59,019 | $ 53,609 | $ 50,652
Loans: |  |  |  |  |
Loans individually evaluated for impairment | 20,179 |  |  |  |
Loans collectively evaluated for impairment | 4,628,977 |  |  |  |
Total | 4,649,156 |  |  |  |
Commercial and industrial loans |  |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |  |
Individually evaluated for impairment | 6,310 |  |  |  |
Collectively evaluated for impairment | 22,023 |  |  |  |
Total ending allowance balance | 28,333 |  | 26,744 | 24,739 | 25,789
Loans: |  |  |  |  |
Loans individually evaluated for impairment | 12,533 |  |  |  |
Loans collectively evaluated for impairment | 1,772,393 |  |  |  |
Total | 1,784,926 |  |  |  |
Commercial real estate and multi-family residential loans |  |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |  |
Individually evaluated for impairment | 1,377 |  |  |  |
Collectively evaluated for impairment | 21,530 |  |  |  |
Total ending allowance balance | 22,907 |  | 21,063 | 18,658 | 15,796
Loans: |  |  |  |  |
Loans individually evaluated for impairment | 5,518 |  |  |  |
Loans collectively evaluated for impairment | 1,887,054 |  |  |  |
Total | 1,892,572 |  |  |  |
Agri-business and agricultural loans |  |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |  |
Individually evaluated for impairment | 84 |  |  |  |
Collectively evaluated for impairment | 2,959 |  |  |  |
Total ending allowance balance | 3,043 |  | 3,408 | 3,704 | 3,869
Loans: |  |  |  |  |
Loans individually evaluated for impairment | 428 |  |  |  |
Loans collectively evaluated for impairment | 429,234 |  |  |  |
Total | 429,662 |  |  |  |
Other Commercial |  |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |  |
Individually evaluated for impairment | 0 |  |  |  |
Collectively evaluated for impairment | 416 |  |  |  |
Total ending allowance balance | 416 |  | 542 | 521 | 447
Loans: |  |  |  |  |
Loans individually evaluated for impairment | 0 |  |  |  |
Loans collectively evaluated for impairment | 93,912 |  |  |  |
Total | 93,912 |  |  |  |
Consumer 1-4 family loans |  |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |  |
Individually evaluated for impairment | 270 |  |  |  |
Collectively evaluated for impairment | 2,349 |  |  |  |
Total ending allowance balance | 2,619 |  | 3,434 | 2,475 | 2,086
Loans: |  |  |  |  |
Loans individually evaluated for impairment | 1,700 |  |  |  |
Loans collectively evaluated for impairment | 342,999 |  |  |  |
Total | 344,699 |  |  |  |
Other Consumer |  |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |  |
Individually evaluated for impairment | 0 |  |  |  |
Collectively evaluated for impairment | 951 |  |  |  |
Total ending allowance balance | 951 |  | 774 | 447 | 345
Loans: |  |  |  |  |
Loans individually evaluated for impairment | 0 |  |  |  |
Loans collectively evaluated for impairment | 103,385 |  |  |  |
Total | 103,385 |  |  |  |
Unallocated |  |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |  |
Individually evaluated for impairment | 0 |  |  |  |
Collectively evaluated for impairment | 3,139 |  |  |  |
Total ending allowance balance | 3,139 |  | $ 3,054 | $ 3,065 | $ 2,320
Loans: |  |  |  |  |
Loans individually evaluated for impairment | 0 |  |  |  |
Loans collectively evaluated for impairment | 0 |  |  |  |
Total | $ 0 |  |  |  |
[1] | Beginning January 1, 2021 calculation is based on the current expected credit loss methodology. Prior to January 1, 2021 calculation was based on the incurred loss methodology.

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