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Loans - Aging of Past Due and Nonaccrual Loans (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans $ 12,358,017 $ 11,585,458
Unearned income (6,787) (7,154)
Loans, net of unearned income 12,351,230 11,578,304
Commercial, financial, agricultural    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 1,871,821 1,673,883
Loans, net of unearned income 1,871,821 1,673,883
Lease financing    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 122,807 122,167
Loans, net of unearned income 116,020 115,013
Real Estate - Construction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 1,333,397 1,330,337
Loans, net of unearned income 1,333,397 1,330,337
Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 3,439,919 3,216,263
Loans, net of unearned income 3,439,919 3,216,263
Real Estate - Commercial Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 5,486,550 5,118,063
Loans, net of unearned income 5,486,550 5,118,063
Installment loans to individuals    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 103,523 124,745
Loans, net of unearned income 103,523 124,745
Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Unearned income (6,787) (7,154)
Loans, net of unearned income 12,282,414 11,521,759
Accruing Loans | Commercial, financial, agricultural    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 1,866,022 1,661,409
Accruing Loans | Lease financing    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 122,807 122,167
Accruing Loans | Real Estate - Construction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 1,333,397 1,330,260
Accruing Loans | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 3,390,697 3,183,220
Accruing Loans | Real Estate - Commercial Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 5,473,103 5,107,370
Accruing Loans | Installment loans to individuals    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 103,175 124,487
Nonaccruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 68,816 56,545
Nonaccruing Loans | Commercial, financial, agricultural    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 5,799 12,474
Nonaccruing Loans | Lease financing    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 0 0
Nonaccruing Loans | Real Estate - Construction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 0 77
Nonaccruing Loans | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 49,222 33,043
Nonaccruing Loans | Real Estate - Commercial Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 13,447 10,693
Nonaccruing Loans | Installment loans to individuals    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 348 258
30-89 Days Past Due | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 54,031 58,703
30-89 Days Past Due | Accruing Loans | Commercial, financial, agricultural    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 1,098 1,303
30-89 Days Past Due | Accruing Loans | Lease financing    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 687 0
30-89 Days Past Due | Accruing Loans | Real Estate - Construction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 0 8,574
30-89 Days Past Due | Accruing Loans | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 36,898 34,468
30-89 Days Past Due | Accruing Loans | Real Estate - Commercial Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 14,118 12,357
30-89 Days Past Due | Accruing Loans | Installment loans to individuals    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 1,230 2,001
30-89 Days Past Due | Nonaccruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 18,678 13,386
30-89 Days Past Due | Nonaccruing Loans | Commercial, financial, agricultural    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 1,310 18
30-89 Days Past Due | Nonaccruing Loans | Lease financing    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 0 0
30-89 Days Past Due | Nonaccruing Loans | Real Estate - Construction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 0 0
30-89 Days Past Due | Nonaccruing Loans | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 10,484 6,531
30-89 Days Past Due | Nonaccruing Loans | Real Estate - Commercial Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 6,871 6,799
30-89 Days Past Due | Nonaccruing Loans | Installment loans to individuals    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 13 38
90 Days or More Past Due | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 554 331
90 Days or More Past Due | Accruing Loans | Commercial, financial, agricultural    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 483 69
90 Days or More Past Due | Accruing Loans | Lease financing    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 0 0
90 Days or More Past Due | Accruing Loans | Real Estate - Construction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 0 0
90 Days or More Past Due | Accruing Loans | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 58 38
90 Days or More Past Due | Accruing Loans | Real Estate - Commercial Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 0 219
90 Days or More Past Due | Accruing Loans | Installment loans to individuals    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 13 5
90 Days or More Past Due | Nonaccruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 25,530 18,381
90 Days or More Past Due | Nonaccruing Loans | Commercial, financial, agricultural    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 1,296 2,373
90 Days or More Past Due | Nonaccruing Loans | Lease financing    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 0 0
90 Days or More Past Due | Nonaccruing Loans | Real Estate - Construction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 0 0
90 Days or More Past Due | Nonaccruing Loans | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 22,067 13,624
90 Days or More Past Due | Nonaccruing Loans | Real Estate - Commercial Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 2,163 2,284
90 Days or More Past Due | Nonaccruing Loans | Installment loans to individuals    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 4 100
Current Loans | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Unearned income (6,787) (7,154)
Loans, net of unearned income 12,227,829 11,462,725
Current Loans | Accruing Loans | Commercial, financial, agricultural    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 1,864,441 1,660,037
Current Loans | Accruing Loans | Lease financing    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 122,120 122,167
Current Loans | Accruing Loans | Real Estate - Construction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 1,333,397 1,321,686
Current Loans | Accruing Loans | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 3,353,741 3,148,714
Current Loans | Accruing Loans | Real Estate - Commercial Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 5,458,985 5,094,794
Current Loans | Accruing Loans | Installment loans to individuals    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 101,932 122,481
Current Loans | Nonaccruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 24,608 24,778
Current Loans | Nonaccruing Loans | Commercial, financial, agricultural    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 3,193 10,083
Current Loans | Nonaccruing Loans | Lease financing    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 0 0
Current Loans | Nonaccruing Loans | Real Estate - Construction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 0 77
Current Loans | Nonaccruing Loans | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 16,671 12,888
Current Loans | Nonaccruing Loans | Real Estate - Commercial Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 4,413 1,610
Current Loans | Nonaccruing Loans | Installment loans to individuals    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 331 120
Primary | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 2,422,482 2,222,856
Primary | Accruing Loans | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 2,378,308 2,192,780
Primary | Nonaccruing Loans | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 44,174 30,076
Primary | 30-89 Days Past Due | Accruing Loans | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 33,679 28,198
Primary | 30-89 Days Past Due | Nonaccruing Loans | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 9,454 6,015
Primary | 90 Days or More Past Due | Accruing Loans | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 0 0
Primary | 90 Days or More Past Due | Nonaccruing Loans | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 19,394 12,503
Primary | Current Loans | Accruing Loans | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 2,344,629 2,164,582
Primary | Current Loans | Nonaccruing Loans | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 15,326 11,558
Home equity | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 522,688 501,906
Home equity | Accruing Loans | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 519,839 499,997
Home equity | Nonaccruing Loans | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 2,849 1,909
Home equity | 30-89 Days Past Due | Accruing Loans | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 3,004 5,376
Home equity | 30-89 Days Past Due | Nonaccruing Loans | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 987 450
Home equity | 90 Days or More Past Due | Accruing Loans | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 0 0
Home equity | 90 Days or More Past Due | Nonaccruing Loans | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 868 754
Home equity | Current Loans | Accruing Loans | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 516,835 494,621
Home equity | Current Loans | Nonaccruing Loans | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 994 705
Rental/Investment | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 373,755 334,382
Rental/Investment | Accruing Loans | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 371,575 333,406
Rental/Investment | Nonaccruing Loans | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 2,180 976
Rental/Investment | 30-89 Days Past Due | Accruing Loans | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 9 720
Rental/Investment | 30-89 Days Past Due | Nonaccruing Loans | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 43 20
Rental/Investment | 90 Days or More Past Due | Accruing Loans | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 58 38
Rental/Investment | 90 Days or More Past Due | Nonaccruing Loans | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 1,786 331
Rental/Investment | Current Loans | Accruing Loans | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 371,508 332,648
Rental/Investment | Current Loans | Nonaccruing Loans | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 351 625
Land development | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 120,994 157,119
Land development | Real Estate - Commercial Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 104,415 125,857
Land development | Accruing Loans | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 120,975 157,037
Land development | Accruing Loans | Real Estate - Commercial Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 104,115 125,786
Land development | Nonaccruing Loans | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 19 82
Land development | Nonaccruing Loans | Real Estate - Commercial Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 300 71
Land development | 30-89 Days Past Due | Accruing Loans | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 206 174
Land development | 30-89 Days Past Due | Accruing Loans | Real Estate - Commercial Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 90 279
Land development | 30-89 Days Past Due | Nonaccruing Loans | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 0 46
Land development | 30-89 Days Past Due | Nonaccruing Loans | Real Estate - Commercial Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 0 0
Land development | 90 Days or More Past Due | Accruing Loans | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 0 0
Land development | 90 Days or More Past Due | Accruing Loans | Real Estate - Commercial Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 0 0
Land development | 90 Days or More Past Due | Nonaccruing Loans | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 19 36
Land development | 90 Days or More Past Due | Nonaccruing Loans | Real Estate - Commercial Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 259 40
Land development | Current Loans | Accruing Loans | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 120,769 156,863
Land development | Current Loans | Accruing Loans | Real Estate - Commercial Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 104,025 125,507
Land development | Current Loans | Nonaccruing Loans | Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 0 0
Land development | Current Loans | Nonaccruing Loans | Real Estate - Commercial Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 41 31
Owner-occupied | Real Estate - Commercial Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 1,648,961 1,539,296
Owner-occupied | Accruing Loans | Real Estate - Commercial Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 1,645,588 1,534,016
Owner-occupied | Nonaccruing Loans | Real Estate - Commercial Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 3,373 5,280
Owner-occupied | 30-89 Days Past Due | Accruing Loans | Real Estate - Commercial Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 4,867 8,557
Owner-occupied | 30-89 Days Past Due | Nonaccruing Loans | Real Estate - Commercial Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 131 1,495
Owner-occupied | 90 Days or More Past Due | Accruing Loans | Real Estate - Commercial Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 0 219
Owner-occupied | 90 Days or More Past Due | Nonaccruing Loans | Real Estate - Commercial Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 1,904 2,244
Owner-occupied | Current Loans | Accruing Loans | Real Estate - Commercial Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 1,640,721 1,525,240
Owner-occupied | Current Loans | Nonaccruing Loans | Real Estate - Commercial Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 1,338 1,541
Non-owner occupied | Real Estate - Commercial Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 3,733,174 3,452,910
Non-owner occupied | Accruing Loans | Real Estate - Commercial Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 3,723,400 3,447,568
Non-owner occupied | Nonaccruing Loans | Real Estate - Commercial Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 9,774 5,342
Non-owner occupied | 30-89 Days Past Due | Accruing Loans | Real Estate - Commercial Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 9,161 3,521
Non-owner occupied | 30-89 Days Past Due | Nonaccruing Loans | Real Estate - Commercial Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 6,740 5,304
Non-owner occupied | 90 Days or More Past Due | Accruing Loans | Real Estate - Commercial Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 0 0
Non-owner occupied | 90 Days or More Past Due | Nonaccruing Loans | Real Estate - Commercial Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 0 0
Non-owner occupied | Current Loans | Accruing Loans | Real Estate - Commercial Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 3,714,239 3,444,047
Non-owner occupied | Current Loans | Nonaccruing Loans | Real Estate - Commercial Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 3,034 38
Residential | Real Estate - Construction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 269,616 355,500
Residential | Accruing Loans | Real Estate - Construction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 269,616 355,423
Residential | Nonaccruing Loans | Real Estate - Construction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 0 77
Residential | 30-89 Days Past Due | Accruing Loans | Real Estate - Construction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 0 49
Residential | 30-89 Days Past Due | Nonaccruing Loans | Real Estate - Construction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 0 0
Residential | 90 Days or More Past Due | Accruing Loans | Real Estate - Construction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 0 0
Residential | 90 Days or More Past Due | Nonaccruing Loans | Real Estate - Construction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 0 0
Residential | Current Loans | Accruing Loans | Real Estate - Construction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 269,616 355,374
Residential | Current Loans | Nonaccruing Loans | Real Estate - Construction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 0 77
Commercial | Real Estate - Construction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 1,063,781 974,837
Commercial | Accruing Loans | Real Estate - Construction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 1,063,781 974,837
Commercial | Nonaccruing Loans | Real Estate - Construction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 0 0
Commercial | 30-89 Days Past Due | Accruing Loans | Real Estate - Construction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 0 8,525
Commercial | 30-89 Days Past Due | Nonaccruing Loans | Real Estate - Construction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 0 0
Commercial | 90 Days or More Past Due | Accruing Loans | Real Estate - Construction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 0 0
Commercial | 90 Days or More Past Due | Nonaccruing Loans | Real Estate - Construction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 0 0
Commercial | Current Loans | Accruing Loans | Real Estate - Construction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 1,063,781 966,312
Commercial | Current Loans | Nonaccruing Loans | Real Estate - Construction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans $ 0 $ 0