| LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES (Summary of Aging of the Loan Portfolio by Class) (Details) - USD ($)$ in Thousands
 | Sep. 30, 2022 | Dec. 31, 2021 | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Greater Than 90 Days and Still Accruing | $ 7,351 | $ 9,132 | 
| Greater than 90 Days and still Accruing, % of total loans | 0.05% | 0.07% | 
| Nonaccrual | $ 26,500 | $ 31,100 | 
| Nonaccrual, % of total loans | 0.19% | 0.24% | 
| Total Loans | $ 13,918,720 | $ 13,195,843 | 
| Total loans, % of total loans | 100.00% | 100.00% | 
| Current |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Loans receivable, current and past due | $ 13,863,243 | $ 13,134,805 | 
| Current, % of total loans | 99.61% | 99.54% | 
| 30 to 59 Days Past Due |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Loans receivable, current and past due | $ 14,186 | $ 15,094 | 
| Past Due, % of total loans | 0.10% | 0.11% | 
| 60 to 89 Days Past Due |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Loans receivable, current and past due | $ 7,440 | $ 5,712 | 
| Past Due, % of total loans | 0.05% | 0.04% | 
| Construction and Land Development |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Greater Than 90 Days and Still Accruing | $ 115 | $ 299 | 
| Nonaccrual | 421 | 2,697 | 
| Total Loans | 1,068,201 | 862,236 | 
| Construction and Land Development | Current |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Loans receivable, current and past due | 1,067,438 | 857,883 | 
| Construction and Land Development | 30 to 59 Days Past Due |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Loans receivable, current and past due | 120 | 1,357 | 
| Construction and Land Development | 60 to 89 Days Past Due |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Loans receivable, current and past due | 107 | 0 | 
| Commercial Real Estate - Owner Occupied |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Greater Than 90 Days and Still Accruing | 3,517 | 1,257 | 
| Nonaccrual | 4,883 | 5,637 | 
| Total Loans | 1,953,872 | 1,995,409 | 
| Commercial Real Estate - Owner Occupied | Current |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Loans receivable, current and past due | 1,937,372 | 1,987,133 | 
| Commercial Real Estate - Owner Occupied | 30 to 59 Days Past Due |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Loans receivable, current and past due | 7,337 | 1,230 | 
| Commercial Real Estate - Owner Occupied | 60 to 89 Days Past Due |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Loans receivable, current and past due | 763 | 152 | 
| Commercial Real Estate - Non-Owner Occupied |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Greater Than 90 Days and Still Accruing | 621 | 433 | 
| Nonaccrual | 1,923 | 3,641 | 
| Total Loans | 3,900,325 | 3,789,377 | 
| Commercial Real Estate - Non-Owner Occupied | Current |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Loans receivable, current and past due | 3,897,324 | 3,783,211 | 
| Commercial Real Estate - Non-Owner Occupied | 30 to 59 Days Past Due |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Loans receivable, current and past due | 0 | 1,965 | 
| Commercial Real Estate - Non-Owner Occupied | 60 to 89 Days Past Due |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Loans receivable, current and past due | 457 | 127 | 
| Multifamily Real Estate |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Greater Than 90 Days and Still Accruing | 0 | 0 | 
| Nonaccrual | 0 | 113 | 
| Total Loans | 774,970 | 778,626 | 
| Multifamily Real Estate | Current |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Loans receivable, current and past due | 774,970 | 778,429 | 
| Multifamily Real Estate | 30 to 59 Days Past Due |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Loans receivable, current and past due | 0 | 84 | 
| Multifamily Real Estate | 60 to 89 Days Past Due |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Loans receivable, current and past due | 0 | 0 | 
| Commercial and Industrial |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Greater Than 90 Days and Still Accruing | 526 | 1,897 | 
| Nonaccrual | 2,289 | 1,647 | 
| Total Loans | 2,709,047 | 2,542,243 | 
| Commercial and Industrial | Current |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Loans receivable, current and past due | 2,702,308 | 2,536,100 | 
| Commercial and Industrial | 30 to 59 Days Past Due |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Loans receivable, current and past due | 796 | 1,161 | 
| Commercial and Industrial | 60 to 89 Days Past Due |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Loans receivable, current and past due | 3,128 | 1,438 | 
| Residential 1-4 Family - Commercial |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Greater Than 90 Days and Still Accruing | 308 | 990 | 
| Nonaccrual | 1,962 | 2,285 | 
| Total Loans | 542,612 | 607,337 | 
| Residential 1-4 Family - Commercial | Current |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Loans receivable, current and past due | 538,835 | 601,946 | 
| Residential 1-4 Family - Commercial | 30 to 59 Days Past Due |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Loans receivable, current and past due | 1,410 | 1,844 | 
| Residential 1-4 Family - Commercial | 60 to 89 Days Past Due |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Loans receivable, current and past due | 97 | 272 | 
| Residential 1-4 Family - Mortgage |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Greater Than 90 Days and Still Accruing | 680 | 3,013 | 
| Nonaccrual | 11,121 | 11,397 | 
| Total Loans | 891,353 | 816,524 | 
| Residential 1-4 Family - Mortgage | Current |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Loans receivable, current and past due | 876,980 | 795,821 | 
| Total Loans | 876,980 | 795,821 | 
| Residential 1-4 Family - Mortgage | 30 to 59 Days Past Due |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Loans receivable, current and past due | 1,123 | 3,368 | 
| Total Loans | 1,123 | 3,368 | 
| Residential 1-4 Family - Mortgage | 60 to 89 Days Past Due |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Loans receivable, current and past due | 1,449 | 2,925 | 
| Total Loans | 1,449 | 2,925 | 
| Residential 1-4 Family - Mortgage | Greater Than 90 Days and still Accruing |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Total Loans | 680 | 3,013 | 
| Residential 1-4 Family - Mortgage | Nonaccrual |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Total Loans | 11,121 | 11,397 | 
| Residential 1-4 Family - Revolving |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Greater Than 90 Days and Still Accruing | 1,255 | 882 | 
| Nonaccrual | 3,583 | 3,406 | 
| Total Loans | 588,452 | 560,796 | 
| Residential 1-4 Family - Revolving | Current |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Loans receivable, current and past due | 581,418 | 554,652 | 
| Total Loans | 581,418 | 554,652 | 
| Residential 1-4 Family - Revolving | 30 to 59 Days Past Due |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Loans receivable, current and past due | 1,115 | 1,493 | 
| Total Loans | 1,115 | 1,493 | 
| Residential 1-4 Family - Revolving | 60 to 89 Days Past Due |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Loans receivable, current and past due | 1,081 | 363 | 
| Total Loans | 1,081 | 363 | 
| Residential 1-4 Family - Revolving | Greater Than 90 Days and still Accruing |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Total Loans | 1,255 | 882 | 
| Residential 1-4 Family - Revolving | Nonaccrual |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Total Loans | 3,583 | 3,406 | 
| Auto |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Greater Than 90 Days and Still Accruing | 148 | 241 | 
| Nonaccrual | 318 | 223 | 
| Total Loans | 561,277 | 461,052 | 
| Auto | Current |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Loans receivable, current and past due | 558,678 | 458,473 | 
| Total Loans | 558,678 | 458,473 | 
| Auto | 30 to 59 Days Past Due |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Loans receivable, current and past due | 1,876 | 1,866 | 
| Total Loans | 1,876 | 1,866 | 
| Auto | 60 to 89 Days Past Due |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Loans receivable, current and past due | 257 | 249 | 
| Total Loans | 257 | 249 | 
| Auto | Greater Than 90 Days and still Accruing |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Total Loans | 148 | 241 | 
| Auto | Nonaccrual |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Total Loans | 318 | 223 | 
| Consumer |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Greater Than 90 Days and Still Accruing | 86 | 120 | 
| Nonaccrual | 0 | 54 | 
| Total Loans | 172,776 | 176,992 | 
| Consumer | Current |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Loans receivable, current and past due | 172,180 | 175,943 | 
| Total Loans | 172,180 | 175,943 | 
| Consumer | 30 to 59 Days Past Due |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Loans receivable, current and past due | 409 | 689 | 
| Total Loans | 409 | 689 | 
| Consumer | 60 to 89 Days Past Due |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Loans receivable, current and past due | 101 | 186 | 
| Total Loans | 101 | 186 | 
| Consumer | Greater Than 90 Days and still Accruing |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Total Loans | 86 | 120 | 
| Consumer | Nonaccrual |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Total Loans |  | 54 | 
| Other Commercial |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Greater Than 90 Days and Still Accruing | 95 | 0 | 
| Nonaccrual | 0 | 0 | 
| Total Loans | 755,835 | 605,251 | 
| Other Commercial | Current |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Loans receivable, current and past due | 755,740 | 605,214 | 
| Other Commercial | 30 to 59 Days Past Due |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Loans receivable, current and past due | 0 | 37 | 
| Other Commercial | 60 to 89 Days Past Due |  |  | 
| Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  | 
| Loans receivable, current and past due | $ 0 | $ 0 |