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LOANS AND ALLOWANCE FOR LOAN LOSSES (Summary of Aging of the Loan Portfolio by Class) (Details) - USD ($) $ in Thousands | Jun. 30, 2020 | Jan. 01, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Current | $ 14,228,554 |  | $ 12,419,378
Greater Than 90 Days and Still Accruing | 19,255 |  | 13,396
Nonaccrual | 39,624 | $ 45,204 | 28,232
Total Loans | 14,308,646 |  | 12,610,936
30-59 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due | 12,003 |  | 50,453
60-89 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due | 9,210 |  | 12,796
Purchased Impaired |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Current |  |  | 70,267
Total Loans | 73,200 |  | 86,681
Purchased Impaired | 30-89 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due |  |  | 3,221
Purchased Impaired | 90+ Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due |  |  | 13,193
Construction and Land Development |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Current | 1,241,512 |  | 1,231,043
Greater Than 90 Days and Still Accruing | 473 |  | 189
Nonaccrual | 3,977 | 4,060 | 3,703
Total Loans | 1,247,939 |  | 1,250,924
Construction and Land Development | 30-59 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due | 1,683 |  | 4,563
Construction and Land Development | 60-89 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due | 294 |  | 482
Construction and Land Development | Purchased Impaired |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Current |  |  | 10,465
Total Loans |  |  | 10,944
Construction and Land Development | Purchased Impaired | 30-89 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due |  |  | 136
Construction and Land Development | Purchased Impaired | 90+ Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due |  |  | 343
Commercial Real Estate - Owner Occupied |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Current | 2,048,203 |  | 2,001,074
Greater Than 90 Days and Still Accruing | 7,851 |  | 1,062
Nonaccrual | 8,924 | 13,889 | 6,003
Total Loans | 2,067,087 |  | 2,041,243
Commercial Real Estate - Owner Occupied | 30-59 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due | 1,679 |  | 3,482
Commercial Real Estate - Owner Occupied | 60-89 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due | 430 |  | 2,184
Commercial Real Estate - Owner Occupied | Purchased Impaired |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Current |  |  | 20,074
Total Loans |  |  | 27,438
Commercial Real Estate - Owner Occupied | Purchased Impaired | 30-89 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due |  |  | 480
Commercial Real Estate - Owner Occupied | Purchased Impaired | 90+ Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due |  |  | 6,884
Commercial Real Estate - Non-Owner Occupied |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Current | 3,451,071 |  | 3,269,244
Greater Than 90 Days and Still Accruing | 878 |  | 1,451
Nonaccrual | 1,877 | 1,368 | 381
Total Loans | 3,455,125 |  | 3,286,098
Commercial Real Estate - Non-Owner Occupied | 30-59 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due | 930 |  | 457
Commercial Real Estate - Non-Owner Occupied | 60-89 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due | 369 |  | 0
Commercial Real Estate - Non-Owner Occupied | Purchased Impaired |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Current |  |  | 12,730
Total Loans |  |  | 14,565
Commercial Real Estate - Non-Owner Occupied | Purchased Impaired | 30-89 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due |  |  | 848
Commercial Real Estate - Non-Owner Occupied | Purchased Impaired | 90+ Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due |  |  | 987
Multifamily Real Estate |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Current | 717,320 |  | 632,952
Greater Than 90 Days and Still Accruing | 366 |  | 474
Nonaccrual | 33 | 0 | 0
Total Loans | 717,719 |  | 633,743
Multifamily Real Estate | 30-59 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due |  |  | 223
Multifamily Real Estate | 60-89 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due |  |  | 0
Multifamily Real Estate | Purchased Impaired |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Current |  |  | 94
Total Loans |  |  | 94
Multifamily Real Estate | Purchased Impaired | 30-89 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due |  |  | 0
Multifamily Real Estate | Purchased Impaired | 90+ Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due |  |  | 0
Commercial and Industrial |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Current | 3,551,187 |  | 2,099,974
Greater Than 90 Days and Still Accruing | 178 |  | 449
Nonaccrual | 2,708 | 3,037 | 1,735
Total Loans | 3,555,971 |  | 2,114,033
Commercial and Industrial | 30-59 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due | 1,602 |  | 8,698
Commercial and Industrial | 60-89 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due | 296 |  | 1,598
Commercial and Industrial | Purchased Impaired |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Current |  |  | 590
Total Loans |  |  | 1,579
Commercial and Industrial | Purchased Impaired | 90+ Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due |  |  | 989
Residential 1-4 Family - Commercial |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Current | 706,437 |  | 703,471
Greater Than 90 Days and Still Accruing | 578 |  | 674
Nonaccrual | 5,784 | 6,492 | 4,301
Total Loans | 715,384 |  | 724,337
Residential 1-4 Family - Commercial | 30-59 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due | 480 |  | 1,479
Residential 1-4 Family - Commercial | 60-89 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due | 2,105 |  | 2,207
Residential 1-4 Family - Commercial | Purchased Impaired |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Current |  |  | 9,667
Total Loans |  |  | 12,205
Residential 1-4 Family - Commercial | Purchased Impaired | 30-89 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due |  |  | 543
Residential 1-4 Family - Commercial | Purchased Impaired | 90+ Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due |  |  | 1,995
Residential 1-4 Family - Consumer |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Current | 818,877 |  | 842,667
Greater Than 90 Days and Still Accruing | 5,099 |  | 4,515
Nonaccrual | 12,029 | 13,117 | 9,292
Total Loans | 841,051 |  | 890,503
Residential 1-4 Family - Consumer | 30-59 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due | 1,229 |  | 16,244
Total Loans | 1,229 |  |
Residential 1-4 Family - Consumer | 60-89 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due | 3,817 |  | 3,072
Total Loans | 3,817 |  |
Residential 1-4 Family - Consumer | 90+ Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Total Loans | 5,099 |  |
Residential 1-4 Family - Consumer | Purchased Impaired |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Current |  |  | 12,005
Total Loans |  |  | 14,713
Residential 1-4 Family - Consumer | Purchased Impaired | 30-89 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due |  |  | 927
Residential 1-4 Family - Consumer | Purchased Impaired | 90+ Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due |  |  | 1,781
Residential 1-4 Family - Revolving |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Current | 619,172 |  | 637,966
Greater Than 90 Days and Still Accruing | 1,995 |  | 3,357
Nonaccrual | 3,626 | 2,490 | 2,080
Total Loans | 627,765 |  | 659,504
Residential 1-4 Family - Revolving | 30-59 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due | 1,924 |  | 10,190
Total Loans | 1,924 |  |
Residential 1-4 Family - Revolving | 60-89 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due | 1,048 |  | 1,784
Total Loans | 1,048 |  |
Residential 1-4 Family - Revolving | 90+ Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Total Loans | 1,995 |  |
Residential 1-4 Family - Revolving | Purchased Impaired |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Current |  |  | 3,635
Total Loans |  |  | 4,127
Residential 1-4 Family - Revolving | Purchased Impaired | 30-89 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due |  |  | 287
Residential 1-4 Family - Revolving | Purchased Impaired | 90+ Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due |  |  | 205
Auto |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Current | 377,822 |  | 346,819
Greater Than 90 Days and Still Accruing | 181 |  | 272
Nonaccrual | 584 | 565 | 563
Total Loans | 380,053 |  | 350,419
Auto | 30-59 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due | 1,176 |  | 2,525
Total Loans | 1,176 |  |
Auto | 60-89 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due | 290 |  | 236
Total Loans | 290 |  |
Auto | 90+ Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Total Loans | 181 |  |
Auto | Purchased Impaired |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Current |  |  | 4
Total Loans |  |  | 4
Consumer |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Current | 308,719 |  | 367,794
Greater Than 90 Days and Still Accruing | 1,157 |  | 953
Nonaccrual | 81 | 88 | 77
Total Loans | 311,362 |  | 372,853
Consumer | 30-59 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due | 844 |  | 2,128
Total Loans | 844 |  |
Consumer | 60-89 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due | 561 |  | 1,233
Total Loans | 561 |  |
Consumer | 90+ Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Total Loans | 1,157 |  |
Consumer | Purchased Impaired |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Current |  |  | 659
Total Loans |  |  | 668
Consumer | Purchased Impaired | 90+ Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due |  |  | 9
Other Commercial |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Current | 388,234 |  | 286,374
Greater Than 90 Days and Still Accruing | 499 |  | 0
Nonaccrual | 1 | $ 98 | 97
Total Loans | 389,190 |  | 287,279
Other Commercial | 30-59 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due | $ 456 |  | 464
Other Commercial | 60-89 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due |  |  | 0
Other Commercial | Purchased Impaired |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Current |  |  | 344
Total Loans |  |  | 344
Other Commercial | Purchased Impaired | 30-89 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due |  |  | 0
Other Commercial | Purchased Impaired | 90+ Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due |  |  | $ 0

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