Quarterly report pursuant to Section 13 or 15(d)

LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES (Loans Stated at Face Amount, Net of Unearned Income) (Details)

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LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES (Loans Stated at Face Amount, Net of Unearned Income) (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Loans and Leases Receivable Disclosure [Line Items]    
Loans held for investment, net of deferred fees and costs $ 13,459,349 $ 13,195,843
Total Allowance for credit losses (102,591) (99,787)
Total loans held for investment, net 13,356,758 13,096,056
Loans receivable, deferred fees and costs 44,000 49,300
Construction and Land Development    
Loans and Leases Receivable Disclosure [Line Items]    
Loans held for investment, net of deferred fees and costs 969,059 862,236
Commercial Real Estate - Owner Occupied    
Loans and Leases Receivable Disclosure [Line Items]    
Loans held for investment, net of deferred fees and costs 2,007,671 1,995,409
Commercial Real Estate - Non-Owner Occupied    
Loans and Leases Receivable Disclosure [Line Items]    
Loans held for investment, net of deferred fees and costs 3,875,681 3,789,377
Multifamily Real Estate    
Loans and Leases Receivable Disclosure [Line Items]    
Loans held for investment, net of deferred fees and costs 723,940 778,626
Commercial and Industrial    
Loans and Leases Receivable Disclosure [Line Items]    
Loans held for investment, net of deferred fees and costs 2,540,680 2,542,243
Residential 1-4 Family - Commercial    
Loans and Leases Receivable Disclosure [Line Items]    
Loans held for investment, net of deferred fees and costs 569,801 607,337
Residential 1-4 Family - Mortgage    
Loans and Leases Receivable Disclosure [Line Items]    
Loans held for investment, net of deferred fees and costs 824,163 816,524
Residential 1-4 Family - Revolving    
Loans and Leases Receivable Disclosure [Line Items]    
Loans held for investment, net of deferred fees and costs 568,403 560,796
Auto    
Loans and Leases Receivable Disclosure [Line Items]    
Loans held for investment, net of deferred fees and costs 499,855 461,052
Consumer    
Loans and Leases Receivable Disclosure [Line Items]    
Loans held for investment, net of deferred fees and costs 171,875 176,992
Other Commercial    
Loans and Leases Receivable Disclosure [Line Items]    
Loans held for investment, net of deferred fees and costs 708,221 605,251
Paycheck Protection Program (PPP) | Commercial and Industrial    
Loans and Leases Receivable Disclosure [Line Items]    
Total loans held for investment, net 66,300 145,300,000
Paycheck Protection Program (PPP) | Other Commercial    
Loans and Leases Receivable Disclosure [Line Items]    
Total loans held for investment, net $ 1,100 $ 5,100