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ALLOWANCE FOR LOAN LOSSES AND CREDIT QUALITY - Aging Of The Recorded Investment In Past Due Loans (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Loans Not Past Due | $ 4,635,787 | $ 4,045,634
Past Due | 1,267 | 1,474
Financing Receivable, 90 Days or More Past Due, Still Accruing | 116 | 45
Nonaccrual | 11,986 | 18,675
Total Past Due and Nonaccrual | 13,369 | 20,194
Total ending loans balance | 4,649,156 | 4,065,828
Other Commercial Loans |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Loans Not Past Due | 93,912 | 112,166
Past Due | 0 | 0
Nonaccrual | 0 | 0
Total Past Due and Nonaccrual | 0 | 0
Total ending loans balance | 93,912 | 112,166
Other Commercial Loans | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Commercial and Industrial Loans [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total ending loans balance | 1,784,926 | 1,426,826
Commercial and Industrial Loans [Member] | Working Capital Lines of Credit Loans [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Loans Not Past Due | 625,493 | 703,737
Past Due | 0 | 10
Nonaccrual | 606 | 6,236
Total Past Due and Nonaccrual | 606 | 6,246
Total ending loans balance | 626,099 | 709,983
Commercial and Industrial Loans [Member] | Working Capital Lines of Credit Loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Commercial and Industrial Loans [Member] | Non-working Capital Loans [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Loans Not Past Due | 1,153,540 | 710,557
Past Due | 0 | 4
Nonaccrual | 5,287 | 6,282
Total Past Due and Nonaccrual | 5,287 | 6,286
Total ending loans balance | 1,158,827 | 716,843
Commercial and Industrial Loans [Member] | Non-working Capital Loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Commercial Real Estate and Multi-family Residential Loans |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total ending loans balance | 1,892,572 | 1,670,840
Commercial Real Estate and Multi-family Residential Loans | Construction and Land Development Loans [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Loans Not Past Due | 361,664 | 286,534
Past Due | 0 | 0
Nonaccrual | 0 | 0
Total Past Due and Nonaccrual | 0 | 0
Total ending loans balance | 361,664 | 286,534
Commercial Real Estate and Multi-family Residential Loans | Construction and Land Development Loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Commercial Real Estate and Multi-family Residential Loans | Owner Occupied Loans [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Loans Not Past Due | 642,527 | 569,303
Past Due | 0 | 0
Nonaccrual | 5,047 | 4,056
Total Past Due and Nonaccrual | 5,047 | 4,056
Total ending loans balance | 647,574 | 573,359
Commercial Real Estate and Multi-family Residential Loans | Owner Occupied Loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Commercial Real Estate and Multi-family Residential Loans | Nonowner Occupied Loans |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Loans Not Past Due | 579,050 | 570,687
Past Due | 0 | 0
Nonaccrual | 0 | 0
Total Past Due and Nonaccrual | 0 | 0
Total ending loans balance | 579,050 | 570,687
Commercial Real Estate and Multi-family Residential Loans | Nonowner Occupied Loans | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Commercial Real Estate and Multi-family Residential Loans | Multifamily Loans |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Loans Not Past Due | 304,284 | 240,260
Past Due | 0 | 0
Nonaccrual | 0 | 0
Total Past Due and Nonaccrual | 0 | 0
Total ending loans balance | 304,284 | 240,260
Commercial Real Estate and Multi-family Residential Loans | Multifamily Loans | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Agri-business and Agricultural Loans [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total ending loans balance | 429,662 | 379,631
Agri-business and Agricultural Loans [Member] | Loans Secured By Farmland |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Loans Not Past Due | 194,935 | 173,959
Past Due | 0 | 0
Nonaccrual | 428 | 430
Total Past Due and Nonaccrual | 428 | 430
Total ending loans balance | 195,363 | 174,389
Agri-business and Agricultural Loans [Member] | Loans Secured By Farmland | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Agri-business and Agricultural Loans [Member] | Loans For Agricultural Production |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Loans Not Past Due | 234,191 | 205,228
Past Due | 108 | 0
Nonaccrual | 0 | 14
Total Past Due and Nonaccrual | 108 | 14
Total ending loans balance | 234,299 | 205,242
Agri-business and Agricultural Loans [Member] | Loans For Agricultural Production | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Consumer 1-4 Family Mortgage Loans [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total ending loans balance | 344,699 | 377,999
Consumer 1-4 Family Mortgage Loans [Member] | Closed End First Mortgage Loans [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Loans Not Past Due | 165,895 | 174,902
Past Due | 877 | 1,099
Financing Receivable, 90 Days or More Past Due, Still Accruing | 116 | 45
Nonaccrual | 613 | 827
Total Past Due and Nonaccrual | 1,606 | 1,971
Total ending loans balance | 167,501 | 176,873
Consumer 1-4 Family Mortgage Loans [Member] | Home equity mortgage open-ended revolving lines |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Loans Not Past Due |  | 12,870
Past Due |  | 0
Nonaccrual |  | 52
Total Past Due and Nonaccrual |  | 52
Total ending loans balance | 11,962 | 12,922
Consumer 1-4 Family Mortgage Loans [Member] | Home equity mortgage open-ended revolving lines | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing |  | 0
Consumer 1-4 Family Mortgage Loans [Member] | Open End and Junior Lien Loans |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Loans Not Past Due | 165,094 | 187,255
Past Due | 137 | 188
Nonaccrual | 5 | 761
Total Past Due and Nonaccrual | 142 | 949
Total ending loans balance | 165,236 | 188,204
Consumer 1-4 Family Mortgage Loans [Member] | Open End and Junior Lien Loans | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Consumer 1-4 Family Mortgage Loans [Member] | Residential Construction and Land Development Loans [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Loans Not Past Due | 11,962 |
Past Due | 0 |
Nonaccrual | 0 |
Total Past Due and Nonaccrual | 0 |
Total ending loans balance | 11,962 | 12,922
Consumer 1-4 Family Mortgage Loans [Member] | Residential Construction and Land Development Loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 |
Consumer 1-4 Family Mortgage Loans [Member] | Other consumer loans |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Loans Not Past Due | 103,240 | 98,176
Past Due | 145 | 173
Nonaccrual | 0 | 17
Total Past Due and Nonaccrual | 145 | 190
Total ending loans balance | 103,385 | 98,366
Consumer 1-4 Family Mortgage Loans [Member] | Other consumer loans | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | $ 0 | $ 0

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