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Loans and Allowance for Loan Losses Loan Classification by Risk Rating Category (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Receivables [Abstract]    
Percentage of loan portfolio as commercial loan 76.60%  
Risk rated loans $ 1,000  
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year 9,094,921  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 4,259,785  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 2,626,032  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 1,322,287  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 818,344  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 1,206,571  
Financing Receivable, Revolving 4,086,322  
Loans 23,414,262 $ 22,424,501
Potential problem loans 109,600 173,500
Pass    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year 8,948,119  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 3,920,681  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 2,496,213  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 1,285,630  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 774,433  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 1,165,995  
Financing Receivable, Revolving 4,009,111  
Loans 22,600,182  
Special Mention    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year 121,261  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 315,794  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 111,962  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 18,894  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 34,444  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 32,878  
Financing Receivable, Revolving 37,679  
Loans 672,912  
Substandard Accrual    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year [1] 24,404  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year [1] 10,710  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year [1] 12,409  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year [1] 15,173  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year [1] 8,768  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year [1] 2,579  
Financing Receivable, Revolving [1] 35,556  
Loans [1] 109,599  
Substandard Nonaccrual    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year 1,137  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 12,600  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 5,448  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 2,590  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 699  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 5,119  
Financing Receivable, Revolving 3,976  
Loans 31,569  
Doubtful Nonaccrual    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 0  
Financing Receivable, Revolving 0  
Loans 0  
Commercial Real Estate Owner Occupied    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year 965,782  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 755,526  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 417,921  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 331,380  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 201,368  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 298,738  
Financing Receivable, Revolving 78,107  
Loans 3,048,822 2,802,227
Commercial Real Estate Owner Occupied | Pass    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year 951,693  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 732,232  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 390,068  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 327,933  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 190,395  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 294,150  
Financing Receivable, Revolving 72,222  
Loans 2,958,693  
Commercial Real Estate Owner Occupied | Special Mention    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year 9,462  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 21,875  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 21,633  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 2,246  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 6,952  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 3,806  
Financing Receivable, Revolving 5,885  
Loans 71,859  
Commercial Real Estate Owner Occupied | Substandard Accrual    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year [1] 3,976  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year [1] 1,349  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year [1] 5,823  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year [1] 219  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year [1] 3,626  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year [1] 582  
Financing Receivable, Revolving [1] 0  
Loans [1] 15,575  
Commercial Real Estate Owner Occupied | Substandard Nonaccrual    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year 651  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 70  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 397  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 982  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 395  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 200  
Financing Receivable, Revolving 0  
Loans 2,695  
Commercial Real Estate Owner Occupied | Doubtful Nonaccrual    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 0  
Financing Receivable, Revolving 0  
Loans 0  
Commercial real estate non owner occupied    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year 1,758,179  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 1,212,644  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 872,137  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 440,476  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 381,768  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 483,756  
Financing Receivable, Revolving 72,744  
Loans 5,221,704 5,203,384
Commercial real estate non owner occupied | Pass    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year 1,662,320  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 915,986  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 826,859  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 428,119  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 353,775  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 454,916  
Financing Receivable, Revolving 72,744  
Loans 4,714,719  
Commercial real estate non owner occupied | Special Mention    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year 94,183  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 288,608  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 43,925  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 8,917  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 26,295  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 27,937  
Financing Receivable, Revolving 0  
Loans 489,865  
Commercial real estate non owner occupied | Substandard Accrual    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year [1] 1,676  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year [1] 8,050  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year [1] 1,353  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year [1] 2,939  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year [1] 1,698  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year [1] 0  
Financing Receivable, Revolving [1] 0  
Loans [1] 15,716  
Commercial real estate non owner occupied | Substandard Nonaccrual    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 501  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 903  
Financing Receivable, Revolving 0  
Loans 1,404  
Commercial real estate non owner occupied | Doubtful Nonaccrual    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 0  
Financing Receivable, Revolving 0  
Loans 0  
Consumer Real Estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year 1,231,799  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 578,171  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 311,231  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 191,107  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 110,629  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 290,751  
Financing Receivable, Revolving 966,996  
Loans 3,680,684 3,099,172
Consumer Real Estate | Pass    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year 1,231,491  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 576,608  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 306,762  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 189,715  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 110,420  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 284,642  
Financing Receivable, Revolving 964,902  
Loans 3,664,540  
Consumer Real Estate | Special Mention    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year 120  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 688  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 752  
Financing Receivable, Revolving 0  
Loans 1,560  
Consumer Real Estate | Substandard Accrual    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year [1] 0  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year [1] 864  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year [1] 0  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year [1] 0  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year [1] 0  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year [1] 1,817  
Financing Receivable, Revolving [1] 1,640  
Loans [1] 4,321  
Consumer Real Estate | Substandard Nonaccrual    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year 188  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 699  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 4,469  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 704  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 209  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 3,540  
Financing Receivable, Revolving 454  
Loans 10,263  
Consumer Real Estate | Doubtful Nonaccrual    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 0  
Financing Receivable, Revolving 0  
Loans 0  
Construction and Land Development    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year 1,587,204  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 802,942  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 415,793  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 72,130  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 12,290  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 3,163  
Financing Receivable, Revolving 9,495  
Loans 2,903,017 2,901,746
Construction and Land Development | Pass    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year 1,584,155  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 802,059  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 406,645  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 72,112  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 12,290  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 2,873  
Financing Receivable, Revolving 9,495  
Loans 2,889,629  
Construction and Land Development | Special Mention    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year 3,049  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 883  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 8,908  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 0  
Financing Receivable, Revolving 0  
Loans 12,840  
Construction and Land Development | Substandard Accrual    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year [1] 0  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year [1] 0  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year [1] 11  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year [1] 18  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year [1] 0  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year [1] 163  
Financing Receivable, Revolving [1] 0  
Loans [1] 192  
Construction and Land Development | Substandard Nonaccrual    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 229  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 127  
Financing Receivable, Revolving 0  
Loans 356  
Construction and Land Development | Doubtful Nonaccrual    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 0  
Financing Receivable, Revolving 0  
Loans 0  
Commercial and Industrial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year 3,355,352  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 828,399  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 602,973  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 284,959  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 110,190  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 128,629  
Financing Receivable, Revolving 2,764,044  
Loans 8,074,546 8,038,457
Commercial and Industrial | Pass    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year 3,321,855  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 811,693  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 559,902  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 265,516  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 105,454  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 127,880  
Financing Receivable, Revolving 2,694,814  
Loans 7,887,114  
Commercial and Industrial | Special Mention    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year 14,447  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 4,428  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 37,496  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 7,043  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 1,197  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 383  
Financing Receivable, Revolving 31,794  
Loans 96,788  
Commercial and Industrial | Substandard Accrual    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year [1] 18,752  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year [1] 447  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year [1] 5,222  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year [1] 11,997  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year [1] 3,444  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year [1] 17  
Financing Receivable, Revolving [1] 33,916  
Loans [1] 73,795  
Commercial and Industrial | Substandard Nonaccrual    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year 298  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 11,831  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 353  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 403  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 95  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 349  
Financing Receivable, Revolving 3,520  
Loans 16,849  
Commercial and Industrial | Doubtful Nonaccrual    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 0  
Financing Receivable, Revolving 0  
Loans 0  
Consumer and Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year 196,605  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 82,103  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 5,977  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 2,235  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 2,099  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 1,534  
Financing Receivable, Revolving 194,936  
Loans 485,489 $ 379,515
Consumer and Other | Pass    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year 196,605  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 82,103  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 5,977  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 2,235  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 2,099  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 1,534  
Financing Receivable, Revolving 194,934  
Loans 485,487  
Consumer and Other | Special Mention    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 0  
Financing Receivable, Revolving 0  
Loans 0  
Consumer and Other | Substandard Accrual    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year [1] 0  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year [1] 0  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year [1] 0  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year [1] 0  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year [1] 0  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year [1] 0  
Financing Receivable, Revolving [1] 0  
Loans [1] 0  
Consumer and Other | Substandard Nonaccrual    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 0  
Financing Receivable, Revolving 2  
Loans 2  
Consumer and Other | Doubtful Nonaccrual    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 0  
Financing Receivable, Revolving 0  
Loans $ 0  
[1] Potential problem loans represent those loans with a well-defined weakness and where information about possible credit problems of borrowers has caused management to have doubts about the borrower's ability to comply with present repayment terms. This definition is believed to be substantially consistent with the standards established by Pinnacle Bank's primary regulators for loans classified as substandard, excluding TDRs. Potential problem loans, which are not included in nonaccrual loans, amounted to approximately $109.6 million at December 31, 2021, compared to $173.5 million at December 31, 2020.