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LOANS AND ALLOWANCE FOR LOAN LOSSES (Loans Stated at Face Amount, Net of Unearned Income) (Details) - USD ($) $ in Thousands | Sep. 30, 2020 | Jan. 01, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Loans held for investment, net of deferred fees and costs | $ 14,383,215 |  | $ 12,610,936
Total Allowance for credit losses | (174,122) | $ (94,838) | (42,294)
Total loans held for investment, net | 14,209,093 |  | 12,568,642
Construction and Land Development |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Loans held for investment, net of deferred fees and costs | 1,207,190 |  | 1,250,924
Commercial Real Estate - Owner Occupied |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Loans held for investment, net of deferred fees and costs | 2,107,333 |  | 2,041,243
Commercial Real Estate - Non-Owner Occupied |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Loans held for investment, net of deferred fees and costs | 3,497,929 |  | 3,286,098
Multifamily Real Estate |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Loans held for investment, net of deferred fees and costs | 731,582 |  | 633,743
Commercial and Industrial |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Loans held for investment, net of deferred fees and costs | 3,536,249 |  | 2,114,033
Residential 1-4 Family - Commercial |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Loans held for investment, net of deferred fees and costs | 696,944 |  | 724,337
Residential 1-4 Family - Consumer |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Loans held for investment, net of deferred fees and costs | 830,144 |  | 890,503
Residential 1-4 Family - Revolving |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Loans held for investment, net of deferred fees and costs | 618,320 |  | 659,504
Auto |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Loans held for investment, net of deferred fees and costs | 387,417 |  | 350,419
Consumer |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Loans held for investment, net of deferred fees and costs | 276,023 |  | 372,853
Other Commercial |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Loans held for investment, net of deferred fees and costs | 494,084 |  | $ 287,279
Paycheck Protection Program (PPP) |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Total loans held for investment, net | 769,600 |  |
Paycheck Protection Program (PPP) | Commercial and Industrial |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Total loans held for investment, net | 1,600,000 |  |
Paycheck Protection Program (PPP) | Other Commercial |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Total loans held for investment, net | $ 21,300 |  |

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- Definition Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(1)(ii) -URI http://asc.fasb.org/extlink&oid=121614798&loc=d3e15032-111544 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L.1) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74567-122707 + Details
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