v3.25.2
Loans - Aging of Past Due and Nonaccrual Loans (Details) - USD ($)
$ in Thousands
Jun. 30, 2025
Dec. 31, 2024
Jun. 30, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans $ 18,568,438 $ 12,889,500  
Unearned income (4,991) (4,480)  
Loans held for investment, net of unearned income 18,563,447 12,885,020 $ 12,604,755
Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Unearned income (4,991) (4,480)  
Loans held for investment, net of unearned income 18,425,448 12,774,209  
Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Unearned income 0 0  
Loans held for investment, net of unearned income 137,999 110,811  
30-89 Days Past Due | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Unearned income 0 0  
Loans held for investment, net of unearned income 46,560 39,842  
30-89 Days Past Due | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Unearned income 0 0  
Loans held for investment, net of unearned income 13,771 15,445  
90 Days or More Past Due | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Unearned income 0 0  
Loans held for investment, net of unearned income 3,860 2,464  
90 Days or More Past Due | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Unearned income 0 0  
Loans held for investment, net of unearned income 38,825 30,098  
Current Loans | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Unearned income (4,991) (4,480)  
Loans held for investment, net of unearned income 18,375,028 12,731,903  
Current Loans | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Unearned income 0 0  
Loans held for investment, net of unearned income 85,403 65,268  
Commercial, financial, agricultural      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 2,666,923 1,885,817  
Loans held for investment, net of unearned income 2,666,923   1,847,762
Commercial, financial, agricultural | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 2,657,279 1,883,942  
Commercial, financial, agricultural | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 9,644 1,875  
Commercial, financial, agricultural | 30-89 Days Past Due | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 4,912 807  
Commercial, financial, agricultural | 30-89 Days Past Due | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 4,282 245  
Commercial, financial, agricultural | 90 Days or More Past Due | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 981 125  
Commercial, financial, agricultural | 90 Days or More Past Due | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 3,801 734  
Commercial, financial, agricultural | Current Loans | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 2,651,386 1,883,010  
Commercial, financial, agricultural | Current Loans | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 1,561 896  
Lease financing      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 94,559 95,071  
Loans held for investment, net of unearned income 89,568   102,996
Lease financing | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 92,884 90,988  
Lease financing | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 1,675 4,083  
Lease financing | 30-89 Days Past Due | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 0 27  
Lease financing | 30-89 Days Past Due | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 1,102 78  
Lease financing | 90 Days or More Past Due | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 0 0  
Lease financing | 90 Days or More Past Due | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 492 614  
Lease financing | Current Loans | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 92,884 90,961  
Lease financing | Current Loans | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 81 3,391  
Real estate – construction:      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 1,339,967 1,093,653  
Loans held for investment, net of unearned income 1,339,967   1,355,425
Real estate – construction: | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 1,335,232 1,092,430  
Real estate – construction: | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 4,735 1,223  
Real estate – construction: | 30-89 Days Past Due | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 1,216 2,194  
Real estate – construction: | 30-89 Days Past Due | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 0 0  
Real estate – construction: | 90 Days or More Past Due | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 0 16  
Real estate – construction: | 90 Days or More Past Due | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 241 1,023  
Real estate – construction: | Current Loans | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 1,334,016 1,090,220  
Real estate – construction: | Current Loans | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 4,494 200  
Real estate – construction: | Residential      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 380,040 256,655  
Real estate – construction: | Residential | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 377,473 255,432  
Real estate – construction: | Residential | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 2,567 1,223  
Real estate – construction: | Residential | 30-89 Days Past Due | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 1,216 2,194  
Real estate – construction: | Residential | 30-89 Days Past Due | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 0 0  
Real estate – construction: | Residential | 90 Days or More Past Due | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 0 0  
Real estate – construction: | Residential | 90 Days or More Past Due | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 241 1,023  
Real estate – construction: | Residential | Current Loans | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 376,257 253,238  
Real estate – construction: | Residential | Current Loans | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 2,326 200  
Real estate – construction: | Commercial      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 959,927 836,998  
Real estate – construction: | Commercial | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 957,759 836,998  
Real estate – construction: | Commercial | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 2,168 0  
Real estate – construction: | Commercial | 30-89 Days Past Due | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 0 0  
Real estate – construction: | Commercial | 30-89 Days Past Due | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 0 0  
Real estate – construction: | Commercial | 90 Days or More Past Due | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 0 16  
Real estate – construction: | Commercial | 90 Days or More Past Due | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 0 0  
Real estate – construction: | Commercial | Current Loans | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 957,759 836,982  
Real estate – construction: | Commercial | Current Loans | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 2,168 0  
Real estate – 1-4 family mortgage:      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 4,874,679 3,488,877  
Loans held for investment, net of unearned income 4,874,679   3,435,818
Real estate – 1-4 family mortgage: | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 4,830,524 3,430,075  
Real estate – 1-4 family mortgage: | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 44,155 58,802  
Real estate – 1-4 family mortgage: | 30-89 Days Past Due | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 28,513 33,042  
Real estate – 1-4 family mortgage: | 30-89 Days Past Due | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 3,831 14,724  
Real estate – 1-4 family mortgage: | 90 Days or More Past Due | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 508 1,787  
Real estate – 1-4 family mortgage: | 90 Days or More Past Due | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 28,621 26,669  
Real estate – 1-4 family mortgage: | Current Loans | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 4,801,503 3,395,246  
Real estate – 1-4 family mortgage: | Current Loans | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 11,703 17,409  
Real estate – 1-4 family mortgage: | Primary      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 3,082,720 2,428,076  
Real estate – 1-4 family mortgage: | Primary | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 3,044,510 2,373,039  
Real estate – 1-4 family mortgage: | Primary | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 38,210 55,037  
Real estate – 1-4 family mortgage: | Primary | 30-89 Days Past Due | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 22,546 29,258  
Real estate – 1-4 family mortgage: | Primary | 30-89 Days Past Due | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 3,352 13,627  
Real estate – 1-4 family mortgage: | Primary | 90 Days or More Past Due | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 305 0  
Real estate – 1-4 family mortgage: | Primary | 90 Days or More Past Due | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 24,956 25,335  
Real estate – 1-4 family mortgage: | Primary | Current Loans | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 3,021,659 2,343,781  
Real estate – 1-4 family mortgage: | Primary | Current Loans | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 9,902 16,075  
Real estate – 1-4 family mortgage: | Home equity      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 722,389 544,158  
Real estate – 1-4 family mortgage: | Home equity | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 718,981 540,789  
Real estate – 1-4 family mortgage: | Home equity | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 3,408 3,369  
Real estate – 1-4 family mortgage: | Home equity | 30-89 Days Past Due | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 4,031 3,186  
Real estate – 1-4 family mortgage: | Home equity | 30-89 Days Past Due | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 473 941  
Real estate – 1-4 family mortgage: | Home equity | 90 Days or More Past Due | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 203 35  
Real estate – 1-4 family mortgage: | Home equity | 90 Days or More Past Due | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 2,281 1,094  
Real estate – 1-4 family mortgage: | Home equity | Current Loans | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 714,747 537,568  
Real estate – 1-4 family mortgage: | Home equity | Current Loans | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 654 1,334  
Real estate – 1-4 family mortgage: | Rental/investment      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 843,334 402,938  
Real estate – 1-4 family mortgage: | Rental/investment | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 840,874 402,562  
Real estate – 1-4 family mortgage: | Rental/investment | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 2,460 376  
Real estate – 1-4 family mortgage: | Rental/investment | 30-89 Days Past Due | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 1,936 573  
Real estate – 1-4 family mortgage: | Rental/investment | 30-89 Days Past Due | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 0 136  
Real estate – 1-4 family mortgage: | Rental/investment | 90 Days or More Past Due | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 0 12  
Real estate – 1-4 family mortgage: | Rental/investment | 90 Days or More Past Due | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 1,313 240  
Real estate – 1-4 family mortgage: | Rental/investment | Current Loans | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 838,938 401,977  
Real estate – 1-4 family mortgage: | Rental/investment | Current Loans | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 1,147 0  
Real estate – 1-4 family mortgage: | Land development      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 226,236 113,705  
Real estate – 1-4 family mortgage: | Land development | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 226,159 113,685  
Real estate – 1-4 family mortgage: | Land development | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 77 20  
Real estate – 1-4 family mortgage: | Land development | 30-89 Days Past Due | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 0 25  
Real estate – 1-4 family mortgage: | Land development | 30-89 Days Past Due | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 6 20  
Real estate – 1-4 family mortgage: | Land development | 90 Days or More Past Due | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 0 1,740  
Real estate – 1-4 family mortgage: | Land development | 90 Days or More Past Due | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 71 0  
Real estate – 1-4 family mortgage: | Land development | Current Loans | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 226,159 111,920  
Real estate – 1-4 family mortgage: | Land development | Current Loans | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 0 0  
Real Estate - Commercial Mortgage      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 9,470,134 6,236,068  
Loans held for investment, net of unearned income 9,470,134   5,766,478
Real Estate - Commercial Mortgage | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 9,392,564 6,191,343  
Real Estate - Commercial Mortgage | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 77,570 44,725  
Real Estate - Commercial Mortgage | 30-89 Days Past Due | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 10,804 3,118  
Real Estate - Commercial Mortgage | 30-89 Days Past Due | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 4,465 394  
Real Estate - Commercial Mortgage | 90 Days or More Past Due | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 2,341 525  
Real Estate - Commercial Mortgage | 90 Days or More Past Due | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 5,622 1,016  
Real Estate - Commercial Mortgage | Current Loans | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 9,379,419 6,187,700  
Real Estate - Commercial Mortgage | Current Loans | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 67,483 43,315  
Real Estate - Commercial Mortgage | Land development      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 228,992 114,452  
Real Estate - Commercial Mortgage | Land development | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 227,953 111,321  
Real Estate - Commercial Mortgage | Land development | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 1,039 3,131  
Real Estate - Commercial Mortgage | Land development | 30-89 Days Past Due | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 403 142  
Real Estate - Commercial Mortgage | Land development | 30-89 Days Past Due | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 11 98  
Real Estate - Commercial Mortgage | Land development | 90 Days or More Past Due | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 74 160  
Real Estate - Commercial Mortgage | Land development | 90 Days or More Past Due | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 903 16  
Real Estate - Commercial Mortgage | Land development | Current Loans | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 227,476 111,019  
Real Estate - Commercial Mortgage | Land development | Current Loans | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 125 3,017  
Real Estate - Commercial Mortgage | Owner-occupied      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 3,288,006 1,894,679  
Real Estate - Commercial Mortgage | Owner-occupied | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 3,259,789 1,882,365  
Real Estate - Commercial Mortgage | Owner-occupied | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 28,217 12,314  
Real Estate - Commercial Mortgage | Owner-occupied | 30-89 Days Past Due | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 6,414 2,650  
Real Estate - Commercial Mortgage | Owner-occupied | 30-89 Days Past Due | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 2,208 296  
Real Estate - Commercial Mortgage | Owner-occupied | 90 Days or More Past Due | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 1,477 365  
Real Estate - Commercial Mortgage | Owner-occupied | 90 Days or More Past Due | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 3,556 1,000  
Real Estate - Commercial Mortgage | Owner-occupied | Current Loans | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 3,251,898 1,879,350  
Real Estate - Commercial Mortgage | Owner-occupied | Current Loans | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 22,453 11,018  
Real Estate - Commercial Mortgage | Non-owner occupied      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 5,953,136 4,226,937  
Real Estate - Commercial Mortgage | Non-owner occupied | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 5,904,822 4,197,657  
Real Estate - Commercial Mortgage | Non-owner occupied | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 48,314 29,280  
Real Estate - Commercial Mortgage | Non-owner occupied | 30-89 Days Past Due | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 3,987 326  
Real Estate - Commercial Mortgage | Non-owner occupied | 30-89 Days Past Due | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 2,246 0  
Real Estate - Commercial Mortgage | Non-owner occupied | 90 Days or More Past Due | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 790 0  
Real Estate - Commercial Mortgage | Non-owner occupied | 90 Days or More Past Due | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 1,163 0  
Real Estate - Commercial Mortgage | Non-owner occupied | Current Loans | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 5,900,045 4,197,331  
Real Estate - Commercial Mortgage | Non-owner occupied | Current Loans | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 44,905 29,280  
Installment loans to individuals      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 122,176 90,014  
Loans held for investment, net of unearned income 122,176   $ 96,276
Installment loans to individuals | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 121,956 89,911  
Installment loans to individuals | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 220 103  
Installment loans to individuals | 30-89 Days Past Due | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 1,115 654  
Installment loans to individuals | 30-89 Days Past Due | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 91 4  
Installment loans to individuals | 90 Days or More Past Due | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 30 11  
Installment loans to individuals | 90 Days or More Past Due | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 48 42  
Installment loans to individuals | Current Loans | Accruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 120,811 89,246  
Installment loans to individuals | Current Loans | Nonaccruing Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans $ 81 $ 57