Quarterly report pursuant to Section 13 or 15(d)

LOANS AND ALLOWANCE FOR LOAN LOSSES (Loans Receivables Related Risk Rating) (Details)

v3.20.1
LOANS AND ALLOWANCE FOR LOAN LOSSES (Loans Receivables Related Risk Rating) (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total $ 12,768,841 $ 12,610,936
Construction and Land Development    
Financing Receivable, Recorded Investment [Line Items]    
Term Loans Amortized Cost Basis by Origination Year, 2020 70,752  
Term Loans Amortized Cost Basis by Origination Year, 2019 476,242  
Term Loans Amortized Cost Basis by Origination Year, 2018 436,508  
Term Loans Amortized Cost Basis by Origination Year, 2017 134,304  
Term Loans Amortized Cost Basis by Origination Year, 2016 62,914  
Term Loans Amortized Cost Basis by Origination Year, Prior 105,111  
Financing Receivable, Revolving 32,421  
Revolving Loans Converted to Term 0  
Loans, Total 1,318,252 1,250,924
Construction and Land Development | Pass    
Financing Receivable, Recorded Investment [Line Items]    
Term Loans Amortized Cost Basis by Origination Year, 2020 69,552  
Term Loans Amortized Cost Basis by Origination Year, 2019 467,635  
Term Loans Amortized Cost Basis by Origination Year, 2018 434,210  
Term Loans Amortized Cost Basis by Origination Year, 2017 132,703  
Term Loans Amortized Cost Basis by Origination Year, 2016 53,894  
Term Loans Amortized Cost Basis by Origination Year, Prior 81,829  
Financing Receivable, Revolving 30,573  
Revolving Loans Converted to Term 0  
Loans, Total 1,270,396  
Construction and Land Development | Watch & Special Mention    
Financing Receivable, Recorded Investment [Line Items]    
Term Loans Amortized Cost Basis by Origination Year, 2020 1,200  
Term Loans Amortized Cost Basis by Origination Year, 2019 8,607  
Term Loans Amortized Cost Basis by Origination Year, 2018 1,566  
Term Loans Amortized Cost Basis by Origination Year, 2017 865  
Term Loans Amortized Cost Basis by Origination Year, 2016 6,615  
Term Loans Amortized Cost Basis by Origination Year, Prior 15,627  
Financing Receivable, Revolving 1,848  
Revolving Loans Converted to Term 0  
Loans, Total 36,328  
Construction and Land Development | Substandard    
Financing Receivable, Recorded Investment [Line Items]    
Term Loans Amortized Cost Basis by Origination Year, 2020 0  
Term Loans Amortized Cost Basis by Origination Year, 2019 0  
Term Loans Amortized Cost Basis by Origination Year, 2018 732  
Term Loans Amortized Cost Basis by Origination Year, 2017 736  
Term Loans Amortized Cost Basis by Origination Year, 2016 2,405  
Term Loans Amortized Cost Basis by Origination Year, Prior 7,655  
Financing Receivable, Revolving 0  
Revolving Loans Converted to Term 0  
Loans, Total 11,528  
Commercial Real Estate - Owner Occupied    
Financing Receivable, Recorded Investment [Line Items]    
Term Loans Amortized Cost Basis by Origination Year, 2020 79,743  
Term Loans Amortized Cost Basis by Origination Year, 2019 396,883  
Term Loans Amortized Cost Basis by Origination Year, 2018 330,286  
Term Loans Amortized Cost Basis by Origination Year, 2017 283,541  
Term Loans Amortized Cost Basis by Origination Year, 2016 175,180  
Term Loans Amortized Cost Basis by Origination Year, Prior 744,854  
Financing Receivable, Revolving 41,417  
Revolving Loans Converted to Term 0  
Loans, Total 2,051,904 2,041,243
Commercial Real Estate - Owner Occupied | Pass    
Financing Receivable, Recorded Investment [Line Items]    
Term Loans Amortized Cost Basis by Origination Year, 2020 79,743  
Term Loans Amortized Cost Basis by Origination Year, 2019 391,157  
Term Loans Amortized Cost Basis by Origination Year, 2018 312,340  
Term Loans Amortized Cost Basis by Origination Year, 2017 266,525  
Term Loans Amortized Cost Basis by Origination Year, 2016 147,239  
Term Loans Amortized Cost Basis by Origination Year, Prior 681,938  
Financing Receivable, Revolving 37,492  
Revolving Loans Converted to Term 0  
Loans, Total 1,916,434  
Commercial Real Estate - Owner Occupied | Watch & Special Mention    
Financing Receivable, Recorded Investment [Line Items]    
Term Loans Amortized Cost Basis by Origination Year, 2020 0  
Term Loans Amortized Cost Basis by Origination Year, 2019 5,726  
Term Loans Amortized Cost Basis by Origination Year, 2018 16,831  
Term Loans Amortized Cost Basis by Origination Year, 2017 15,683  
Term Loans Amortized Cost Basis by Origination Year, 2016 25,211  
Term Loans Amortized Cost Basis by Origination Year, Prior 47,288  
Financing Receivable, Revolving 3,551  
Revolving Loans Converted to Term 0  
Loans, Total 114,290  
Commercial Real Estate - Owner Occupied | Substandard    
Financing Receivable, Recorded Investment [Line Items]    
Term Loans Amortized Cost Basis by Origination Year, 2020 0  
Term Loans Amortized Cost Basis by Origination Year, 2019 0  
Term Loans Amortized Cost Basis by Origination Year, 2018 1,115  
Term Loans Amortized Cost Basis by Origination Year, 2017 1,333  
Term Loans Amortized Cost Basis by Origination Year, 2016 2,730  
Term Loans Amortized Cost Basis by Origination Year, Prior 15,628  
Financing Receivable, Revolving 374  
Revolving Loans Converted to Term 0  
Loans, Total 21,180  
Commercial Real Estate - Non-Owner Occupied    
Financing Receivable, Recorded Investment [Line Items]    
Term Loans Amortized Cost Basis by Origination Year, 2020 100,998  
Term Loans Amortized Cost Basis by Origination Year, 2019 502,273  
Term Loans Amortized Cost Basis by Origination Year, 2018 499,932  
Term Loans Amortized Cost Basis by Origination Year, 2017 485,889  
Term Loans Amortized Cost Basis by Origination Year, 2016 497,095  
Term Loans Amortized Cost Basis by Origination Year, Prior 1,195,746  
Financing Receivable, Revolving 46,079  
Revolving Loans Converted to Term 0  
Loans, Total 3,328,012 3,286,098
Commercial Real Estate - Non-Owner Occupied | Pass    
Financing Receivable, Recorded Investment [Line Items]    
Term Loans Amortized Cost Basis by Origination Year, 2020 100,998  
Term Loans Amortized Cost Basis by Origination Year, 2019 501,212  
Term Loans Amortized Cost Basis by Origination Year, 2018 490,930  
Term Loans Amortized Cost Basis by Origination Year, 2017 472,440  
Term Loans Amortized Cost Basis by Origination Year, 2016 480,363  
Term Loans Amortized Cost Basis by Origination Year, Prior 1,159,966  
Financing Receivable, Revolving 44,949  
Revolving Loans Converted to Term 0  
Loans, Total 3,250,858  
Commercial Real Estate - Non-Owner Occupied | Watch & Special Mention    
Financing Receivable, Recorded Investment [Line Items]    
Term Loans Amortized Cost Basis by Origination Year, 2020 0  
Term Loans Amortized Cost Basis by Origination Year, 2019 1,061  
Term Loans Amortized Cost Basis by Origination Year, 2018 8,838  
Term Loans Amortized Cost Basis by Origination Year, 2017 13,449  
Term Loans Amortized Cost Basis by Origination Year, 2016 16,707  
Term Loans Amortized Cost Basis by Origination Year, Prior 29,450  
Financing Receivable, Revolving 838  
Revolving Loans Converted to Term 0  
Loans, Total 70,343  
Commercial Real Estate - Non-Owner Occupied | Substandard    
Financing Receivable, Recorded Investment [Line Items]    
Term Loans Amortized Cost Basis by Origination Year, 2020 0  
Term Loans Amortized Cost Basis by Origination Year, 2019 0  
Term Loans Amortized Cost Basis by Origination Year, 2018 164  
Term Loans Amortized Cost Basis by Origination Year, 2017 0  
Term Loans Amortized Cost Basis by Origination Year, 2016 25  
Term Loans Amortized Cost Basis by Origination Year, Prior 6,330  
Financing Receivable, Revolving 200  
Revolving Loans Converted to Term 0  
Loans, Total 6,719  
Commercial Real Estate - Non-Owner Occupied | Doubtful    
Financing Receivable, Recorded Investment [Line Items]    
Term Loans Amortized Cost Basis by Origination Year, 2020 0  
Term Loans Amortized Cost Basis by Origination Year, 2019 0  
Term Loans Amortized Cost Basis by Origination Year, 2018 0  
Term Loans Amortized Cost Basis by Origination Year, 2017 0  
Term Loans Amortized Cost Basis by Origination Year, 2016 0  
Term Loans Amortized Cost Basis by Origination Year, Prior 0  
Financing Receivable, Revolving 92  
Revolving Loans Converted to Term 0  
Loans, Total 92  
Multifamily Real Estate    
Financing Receivable, Recorded Investment [Line Items]    
Term Loans Amortized Cost Basis by Origination Year, 2020 60,276  
Term Loans Amortized Cost Basis by Origination Year, 2019 78,954  
Term Loans Amortized Cost Basis by Origination Year, 2018 63,329  
Term Loans Amortized Cost Basis by Origination Year, 2017 137,392  
Term Loans Amortized Cost Basis by Origination Year, 2016 65,965  
Term Loans Amortized Cost Basis by Origination Year, Prior 265,849  
Financing Receivable, Revolving 7,625  
Revolving Loans Converted to Term 0  
Loans, Total 679,390 633,743
Multifamily Real Estate | Pass    
Financing Receivable, Recorded Investment [Line Items]    
Term Loans Amortized Cost Basis by Origination Year, 2020 60,276  
Term Loans Amortized Cost Basis by Origination Year, 2019 78,954  
Term Loans Amortized Cost Basis by Origination Year, 2018 63,329  
Term Loans Amortized Cost Basis by Origination Year, 2017 129,106  
Term Loans Amortized Cost Basis by Origination Year, 2016 64,831  
Term Loans Amortized Cost Basis by Origination Year, Prior 254,868  
Financing Receivable, Revolving 7,286  
Revolving Loans Converted to Term 0  
Loans, Total 658,650  
Multifamily Real Estate | Watch & Special Mention    
Financing Receivable, Recorded Investment [Line Items]    
Term Loans Amortized Cost Basis by Origination Year, 2020 0  
Term Loans Amortized Cost Basis by Origination Year, 2019 0  
Term Loans Amortized Cost Basis by Origination Year, 2018 0  
Term Loans Amortized Cost Basis by Origination Year, 2017 8,286  
Term Loans Amortized Cost Basis by Origination Year, 2016 1,134  
Term Loans Amortized Cost Basis by Origination Year, Prior 10,551  
Financing Receivable, Revolving 339  
Revolving Loans Converted to Term 0  
Loans, Total 20,310  
Multifamily Real Estate | Substandard    
Financing Receivable, Recorded Investment [Line Items]    
Term Loans Amortized Cost Basis by Origination Year, 2020 0  
Term Loans Amortized Cost Basis by Origination Year, 2019 0  
Term Loans Amortized Cost Basis by Origination Year, 2018 0  
Term Loans Amortized Cost Basis by Origination Year, 2017 0  
Term Loans Amortized Cost Basis by Origination Year, 2016 0  
Term Loans Amortized Cost Basis by Origination Year, Prior 430  
Financing Receivable, Revolving 0  
Revolving Loans Converted to Term 0  
Loans, Total 430  
Commercial and Industrial    
Financing Receivable, Recorded Investment [Line Items]    
Term Loans Amortized Cost Basis by Origination Year, 2020 127,864  
Term Loans Amortized Cost Basis by Origination Year, 2019 450,289  
Term Loans Amortized Cost Basis by Origination Year, 2018 289,401  
Term Loans Amortized Cost Basis by Origination Year, 2017 92,239  
Term Loans Amortized Cost Basis by Origination Year, 2016 95,019  
Term Loans Amortized Cost Basis by Origination Year, Prior 184,143  
Financing Receivable, Revolving 938,977  
Revolving Loans Converted to Term 402  
Loans, Total 2,177,932 2,114,033
Commercial and Industrial | Pass    
Financing Receivable, Recorded Investment [Line Items]    
Term Loans Amortized Cost Basis by Origination Year, 2020 127,407  
Term Loans Amortized Cost Basis by Origination Year, 2019 445,967  
Term Loans Amortized Cost Basis by Origination Year, 2018 280,399  
Term Loans Amortized Cost Basis by Origination Year, 2017 90,466  
Term Loans Amortized Cost Basis by Origination Year, 2016 90,219  
Term Loans Amortized Cost Basis by Origination Year, Prior 176,554  
Financing Receivable, Revolving 894,146  
Revolving Loans Converted to Term 353  
Loans, Total 2,105,158  
Commercial and Industrial | Watch & Special Mention    
Financing Receivable, Recorded Investment [Line Items]    
Term Loans Amortized Cost Basis by Origination Year, 2020 457  
Term Loans Amortized Cost Basis by Origination Year, 2019 3,817  
Term Loans Amortized Cost Basis by Origination Year, 2018 7,987  
Term Loans Amortized Cost Basis by Origination Year, 2017 1,520  
Term Loans Amortized Cost Basis by Origination Year, 2016 3,900  
Term Loans Amortized Cost Basis by Origination Year, Prior 4,367  
Financing Receivable, Revolving 40,039  
Revolving Loans Converted to Term 49  
Loans, Total 62,087  
Commercial and Industrial | Substandard    
Financing Receivable, Recorded Investment [Line Items]    
Term Loans Amortized Cost Basis by Origination Year, 2020 0  
Term Loans Amortized Cost Basis by Origination Year, 2019 505  
Term Loans Amortized Cost Basis by Origination Year, 2018 1,015  
Term Loans Amortized Cost Basis by Origination Year, 2017 253  
Term Loans Amortized Cost Basis by Origination Year, 2016 900  
Term Loans Amortized Cost Basis by Origination Year, Prior 3,222  
Financing Receivable, Revolving 4,792  
Revolving Loans Converted to Term 0  
Loans, Total 10,687  
Residential 1-4 Family - Commercial    
Financing Receivable, Recorded Investment [Line Items]    
Term Loans Amortized Cost Basis by Origination Year, 2020 30,869  
Term Loans Amortized Cost Basis by Origination Year, 2019 115,229  
Term Loans Amortized Cost Basis by Origination Year, 2018 88,620  
Term Loans Amortized Cost Basis by Origination Year, 2017 108,365  
Term Loans Amortized Cost Basis by Origination Year, 2016 90,417  
Term Loans Amortized Cost Basis by Origination Year, Prior 285,772  
Financing Receivable, Revolving 2,528  
Revolving Loans Converted to Term 3,648  
Loans, Total 721,800 724,337
Residential 1-4 Family - Commercial | Pass    
Financing Receivable, Recorded Investment [Line Items]    
Term Loans Amortized Cost Basis by Origination Year, 2020 29,989  
Term Loans Amortized Cost Basis by Origination Year, 2019 112,509  
Term Loans Amortized Cost Basis by Origination Year, 2018 79,932  
Term Loans Amortized Cost Basis by Origination Year, 2017 104,116  
Term Loans Amortized Cost Basis by Origination Year, 2016 86,412  
Term Loans Amortized Cost Basis by Origination Year, Prior 264,081  
Financing Receivable, Revolving 1,911  
Revolving Loans Converted to Term 810  
Loans, Total 678,950  
Residential 1-4 Family - Commercial | Watch & Special Mention    
Financing Receivable, Recorded Investment [Line Items]    
Term Loans Amortized Cost Basis by Origination Year, 2020 880  
Term Loans Amortized Cost Basis by Origination Year, 2019 2,720  
Term Loans Amortized Cost Basis by Origination Year, 2018 8,378  
Term Loans Amortized Cost Basis by Origination Year, 2017 3,617  
Term Loans Amortized Cost Basis by Origination Year, 2016 2,159  
Term Loans Amortized Cost Basis by Origination Year, Prior 13,689  
Financing Receivable, Revolving 0  
Revolving Loans Converted to Term 2,762  
Loans, Total 31,443  
Residential 1-4 Family - Commercial | Substandard    
Financing Receivable, Recorded Investment [Line Items]    
Term Loans Amortized Cost Basis by Origination Year, 2020 0  
Term Loans Amortized Cost Basis by Origination Year, 2019 0  
Term Loans Amortized Cost Basis by Origination Year, 2018 310  
Term Loans Amortized Cost Basis by Origination Year, 2017 632  
Term Loans Amortized Cost Basis by Origination Year, 2016 1,846  
Term Loans Amortized Cost Basis by Origination Year, Prior 8,002  
Financing Receivable, Revolving 617  
Revolving Loans Converted to Term 76  
Loans, Total 11,407  
Residential 1-4 Family - Consumer    
Financing Receivable, Recorded Investment [Line Items]    
Term Loans Amortized Cost Basis by Origination Year, 2020 21,273  
Term Loans Amortized Cost Basis by Origination Year, 2019 97,262  
Term Loans Amortized Cost Basis by Origination Year, 2018 107,885  
Term Loans Amortized Cost Basis by Origination Year, 2017 103,634  
Term Loans Amortized Cost Basis by Origination Year, 2016 130,558  
Term Loans Amortized Cost Basis by Origination Year, Prior 393,925  
Financing Receivable, Revolving 13  
Loans, Total 854,550 890,503
Residential 1-4 Family - Revolving    
Financing Receivable, Recorded Investment [Line Items]    
Term Loans Amortized Cost Basis by Origination Year, 2020 6,463  
Term Loans Amortized Cost Basis by Origination Year, 2019 7,781  
Term Loans Amortized Cost Basis by Origination Year, 2018 2,641  
Term Loans Amortized Cost Basis by Origination Year, 2017 21  
Term Loans Amortized Cost Basis by Origination Year, 2016 0  
Term Loans Amortized Cost Basis by Origination Year, Prior 975  
Financing Receivable, Revolving 634,254  
Loans, Total 652,135 659,504
Auto    
Financing Receivable, Recorded Investment [Line Items]    
Term Loans Amortized Cost Basis by Origination Year, 2020 35,381  
Term Loans Amortized Cost Basis by Origination Year, 2019 149,869  
Term Loans Amortized Cost Basis by Origination Year, 2018 78,383  
Term Loans Amortized Cost Basis by Origination Year, 2017 49,358  
Term Loans Amortized Cost Basis by Origination Year, 2016 29,312  
Term Loans Amortized Cost Basis by Origination Year, Prior 15,736  
Financing Receivable, Revolving 0  
Loans, Total 358,039 350,419
Consumer    
Financing Receivable, Recorded Investment [Line Items]    
Term Loans Amortized Cost Basis by Origination Year, 2020 25,016  
Term Loans Amortized Cost Basis by Origination Year, 2019 106,836  
Term Loans Amortized Cost Basis by Origination Year, 2018 112,584  
Term Loans Amortized Cost Basis by Origination Year, 2017 35,233  
Term Loans Amortized Cost Basis by Origination Year, 2016 15,050  
Term Loans Amortized Cost Basis by Origination Year, Prior 21,011  
Financing Receivable, Revolving 36,842  
Loans, Total 352,572 372,853
Other Commercial    
Financing Receivable, Recorded Investment [Line Items]    
Term Loans Amortized Cost Basis by Origination Year, 2020 1,468  
Term Loans Amortized Cost Basis by Origination Year, 2019 116,582  
Term Loans Amortized Cost Basis by Origination Year, 2018 10,540  
Term Loans Amortized Cost Basis by Origination Year, 2017 44,917  
Term Loans Amortized Cost Basis by Origination Year, 2016 17,802  
Term Loans Amortized Cost Basis by Origination Year, Prior 63,843  
Financing Receivable, Revolving 19,103  
Revolving Loans Converted to Term 0  
Loans, Total 274,255 287,279
Other Commercial | Pass    
Financing Receivable, Recorded Investment [Line Items]    
Term Loans Amortized Cost Basis by Origination Year, 2020 1,468  
Term Loans Amortized Cost Basis by Origination Year, 2019 116,582  
Term Loans Amortized Cost Basis by Origination Year, 2018 9,904  
Term Loans Amortized Cost Basis by Origination Year, 2017 43,520  
Term Loans Amortized Cost Basis by Origination Year, 2016 17,802  
Term Loans Amortized Cost Basis by Origination Year, Prior 59,403  
Financing Receivable, Revolving 19,049  
Revolving Loans Converted to Term 0  
Loans, Total 267,728  
Other Commercial | Watch & Special Mention    
Financing Receivable, Recorded Investment [Line Items]    
Term Loans Amortized Cost Basis by Origination Year, 2020 0  
Term Loans Amortized Cost Basis by Origination Year, 2019 0  
Term Loans Amortized Cost Basis by Origination Year, 2018 636  
Term Loans Amortized Cost Basis by Origination Year, 2017 1,337  
Term Loans Amortized Cost Basis by Origination Year, 2016 0  
Term Loans Amortized Cost Basis by Origination Year, Prior 4,344  
Financing Receivable, Revolving 54  
Revolving Loans Converted to Term 0  
Loans, Total 6,371  
Other Commercial | Substandard    
Financing Receivable, Recorded Investment [Line Items]    
Term Loans Amortized Cost Basis by Origination Year, 2020 0  
Term Loans Amortized Cost Basis by Origination Year, 2019 0  
Term Loans Amortized Cost Basis by Origination Year, 2018 0  
Term Loans Amortized Cost Basis by Origination Year, 2017 60  
Term Loans Amortized Cost Basis by Origination Year, 2016 0  
Term Loans Amortized Cost Basis by Origination Year, Prior 96  
Financing Receivable, Revolving 0  
Revolving Loans Converted to Term 0  
Loans, Total 156  
Commercial Portfolio    
Financing Receivable, Recorded Investment [Line Items]    
Term Loans Amortized Cost Basis by Origination Year, 2020 471,970  
Term Loans Amortized Cost Basis by Origination Year, 2019 2,136,452  
Term Loans Amortized Cost Basis by Origination Year, 2018 1,718,616  
Term Loans Amortized Cost Basis by Origination Year, 2017 1,286,647  
Term Loans Amortized Cost Basis by Origination Year, 2016 1,004,392  
Term Loans Amortized Cost Basis by Origination Year, Prior 2,845,318  
Financing Receivable, Revolving 1,088,150  
Revolving Loans Converted to Term 4,050  
Loans, Total 10,551,545  
Commercial Portfolio | Pass    
Financing Receivable, Recorded Investment [Line Items]    
Term Loans Amortized Cost Basis by Origination Year, 2020 469,433  
Term Loans Amortized Cost Basis by Origination Year, 2019 2,114,016  
Term Loans Amortized Cost Basis by Origination Year, 2018 1,671,044  
Term Loans Amortized Cost Basis by Origination Year, 2017 1,238,876  
Term Loans Amortized Cost Basis by Origination Year, 2016 940,760  
Term Loans Amortized Cost Basis by Origination Year, Prior 2,678,639  
Financing Receivable, Revolving 1,035,406  
Revolving Loans Converted to Term 1,163  
Loans, Total 10,148,174  
Commercial Portfolio | Watch & Special Mention    
Financing Receivable, Recorded Investment [Line Items]    
Term Loans Amortized Cost Basis by Origination Year, 2020 2,537  
Term Loans Amortized Cost Basis by Origination Year, 2019 21,931  
Term Loans Amortized Cost Basis by Origination Year, 2018 44,236  
Term Loans Amortized Cost Basis by Origination Year, 2017 44,757  
Term Loans Amortized Cost Basis by Origination Year, 2016 55,726  
Term Loans Amortized Cost Basis by Origination Year, Prior 125,316  
Financing Receivable, Revolving 46,669  
Revolving Loans Converted to Term 2,811  
Loans, Total 341,172  
Commercial Portfolio | Substandard    
Financing Receivable, Recorded Investment [Line Items]    
Term Loans Amortized Cost Basis by Origination Year, 2020 0  
Term Loans Amortized Cost Basis by Origination Year, 2019 505  
Term Loans Amortized Cost Basis by Origination Year, 2018 3,336  
Term Loans Amortized Cost Basis by Origination Year, 2017 3,014  
Term Loans Amortized Cost Basis by Origination Year, 2016 7,906  
Term Loans Amortized Cost Basis by Origination Year, Prior 41,363  
Financing Receivable, Revolving 5,983  
Revolving Loans Converted to Term 76  
Loans, Total 62,107  
Commercial Portfolio | Doubtful    
Financing Receivable, Recorded Investment [Line Items]    
Term Loans Amortized Cost Basis by Origination Year, 2020 0  
Term Loans Amortized Cost Basis by Origination Year, 2019 0  
Term Loans Amortized Cost Basis by Origination Year, 2018 0  
Term Loans Amortized Cost Basis by Origination Year, 2017 0  
Term Loans Amortized Cost Basis by Origination Year, 2016 0  
Term Loans Amortized Cost Basis by Origination Year, Prior 0  
Financing Receivable, Revolving 92  
Revolving Loans Converted to Term 0  
Loans, Total 92  
Excluding Purchased Impaired    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   12,524,255
Excluding Purchased Impaired | Pass    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   12,142,328
Excluding Purchased Impaired | Watch & Special Mention    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   316,317
Excluding Purchased Impaired | Substandard    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   65,252
Excluding Purchased Impaired | Doubtful    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   358
Excluding Purchased Impaired | Construction and Land Development    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   1,239,980
Excluding Purchased Impaired | Construction and Land Development | Pass    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   1,197,066
Excluding Purchased Impaired | Construction and Land Development | Watch & Special Mention    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   37,182
Excluding Purchased Impaired | Construction and Land Development | Substandard    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   5,732
Excluding Purchased Impaired | Construction and Land Development | Doubtful    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   0
Excluding Purchased Impaired | Commercial Real Estate - Owner Occupied    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   2,013,805
Excluding Purchased Impaired | Commercial Real Estate - Owner Occupied | Pass    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   1,916,492
Excluding Purchased Impaired | Commercial Real Estate - Owner Occupied | Watch & Special Mention    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   87,004
Excluding Purchased Impaired | Commercial Real Estate - Owner Occupied | Substandard    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   10,309
Excluding Purchased Impaired | Commercial Real Estate - Owner Occupied | Doubtful    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   0
Excluding Purchased Impaired | Commercial Real Estate - Non-Owner Occupied    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   3,271,533
Excluding Purchased Impaired | Commercial Real Estate - Non-Owner Occupied | Pass    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   3,205,463
Excluding Purchased Impaired | Commercial Real Estate - Non-Owner Occupied | Watch & Special Mention    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   62,368
Excluding Purchased Impaired | Commercial Real Estate - Non-Owner Occupied | Substandard    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   3,608
Excluding Purchased Impaired | Commercial Real Estate - Non-Owner Occupied | Doubtful    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   94
Excluding Purchased Impaired | Multifamily Real Estate    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   633,649
Excluding Purchased Impaired | Multifamily Real Estate | Pass    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   613,844
Excluding Purchased Impaired | Multifamily Real Estate | Watch & Special Mention    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   19,396
Excluding Purchased Impaired | Multifamily Real Estate | Substandard    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   409
Excluding Purchased Impaired | Multifamily Real Estate | Doubtful    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   0
Excluding Purchased Impaired | Commercial and Industrial    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   2,112,454
Excluding Purchased Impaired | Commercial and Industrial | Pass    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   2,043,903
Excluding Purchased Impaired | Commercial and Industrial | Watch & Special Mention    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   60,495
Excluding Purchased Impaired | Commercial and Industrial | Substandard    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   8,048
Excluding Purchased Impaired | Commercial and Industrial | Doubtful    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   8
Excluding Purchased Impaired | Residential 1-4 Family - Commercial    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   712,132
Excluding Purchased Impaired | Residential 1-4 Family - Commercial | Pass    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   680,894
Excluding Purchased Impaired | Residential 1-4 Family - Commercial | Watch & Special Mention    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   24,864
Excluding Purchased Impaired | Residential 1-4 Family - Commercial | Substandard    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   6,374
Excluding Purchased Impaired | Residential 1-4 Family - Commercial | Doubtful    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   0
Excluding Purchased Impaired | Residential 1-4 Family - Consumer    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   875,790
Excluding Purchased Impaired | Residential 1-4 Family - Consumer | Pass    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   841,408
Excluding Purchased Impaired | Residential 1-4 Family - Consumer | Watch & Special Mention    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   13,592
Excluding Purchased Impaired | Residential 1-4 Family - Consumer | Substandard    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   20,534
Excluding Purchased Impaired | Residential 1-4 Family - Consumer | Doubtful    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   256
Excluding Purchased Impaired | Residential 1-4 Family - Revolving    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   655,377
Excluding Purchased Impaired | Residential 1-4 Family - Revolving | Pass    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   641,069
Excluding Purchased Impaired | Residential 1-4 Family - Revolving | Watch & Special Mention    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   6,373
Excluding Purchased Impaired | Residential 1-4 Family - Revolving | Substandard    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   7,935
Excluding Purchased Impaired | Residential 1-4 Family - Revolving | Doubtful    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   0
Excluding Purchased Impaired | Auto    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   350,415
Excluding Purchased Impaired | Auto | Pass    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   345,960
Excluding Purchased Impaired | Auto | Watch & Special Mention    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   2,630
Excluding Purchased Impaired | Auto | Substandard    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   1,825
Excluding Purchased Impaired | Auto | Doubtful    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   0
Excluding Purchased Impaired | Consumer    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   372,185
Excluding Purchased Impaired | Consumer | Pass    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   371,315
Excluding Purchased Impaired | Consumer | Watch & Special Mention    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   550
Excluding Purchased Impaired | Consumer | Substandard    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   320
Excluding Purchased Impaired | Consumer | Doubtful    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   0
Excluding Purchased Impaired | Other Commercial    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   286,935
Excluding Purchased Impaired | Other Commercial | Pass    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   284,914
Excluding Purchased Impaired | Other Commercial | Watch & Special Mention    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   1,863
Excluding Purchased Impaired | Other Commercial | Substandard    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   158
Excluding Purchased Impaired | Other Commercial | Doubtful    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   0
Purchased Impaired    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total $ 84,700 86,681
Purchased Impaired | Construction and Land Development    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   10,944
Purchased Impaired | Construction and Land Development | Pass    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   1,092
Purchased Impaired | Construction and Land Development | Watch & Special Mention    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   3,692
Purchased Impaired | Construction and Land Development | Substandard    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   6,160
Purchased Impaired | Construction and Land Development | Doubtful    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   0
Purchased Impaired | Commercial Real Estate - Owner Occupied    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   27,438
Purchased Impaired | Commercial Real Estate - Owner Occupied | Pass    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   8,264
Purchased Impaired | Commercial Real Estate - Owner Occupied | Watch & Special Mention    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   10,524
Purchased Impaired | Commercial Real Estate - Owner Occupied | Substandard    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   8,650
Purchased Impaired | Commercial Real Estate - Owner Occupied | Doubtful    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   0
Purchased Impaired | Commercial Real Estate - Non-Owner Occupied    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   14,565
Purchased Impaired | Commercial Real Estate - Non-Owner Occupied | Pass    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   3,826
Purchased Impaired | Commercial Real Estate - Non-Owner Occupied | Watch & Special Mention    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   9,415
Purchased Impaired | Commercial Real Estate - Non-Owner Occupied | Substandard    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   1,324
Purchased Impaired | Commercial Real Estate - Non-Owner Occupied | Doubtful    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   0
Purchased Impaired | Multifamily Real Estate    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   94
Purchased Impaired | Multifamily Real Estate | Pass    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   0
Purchased Impaired | Multifamily Real Estate | Watch & Special Mention    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   94
Purchased Impaired | Multifamily Real Estate | Substandard    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   0
Purchased Impaired | Multifamily Real Estate | Doubtful    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   0
Purchased Impaired | Commercial and Industrial    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   1,579
Purchased Impaired | Commercial and Industrial | Pass    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   127
Purchased Impaired | Commercial and Industrial | Watch & Special Mention    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   25
Purchased Impaired | Commercial and Industrial | Substandard    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   1,427
Purchased Impaired | Commercial and Industrial | Doubtful    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   0
Purchased Impaired | Residential 1-4 Family - Commercial    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   12,205
Purchased Impaired | Residential 1-4 Family - Commercial | Pass    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   6,000
Purchased Impaired | Residential 1-4 Family - Commercial | Watch & Special Mention    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   2,693
Purchased Impaired | Residential 1-4 Family - Commercial | Substandard    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   3,512
Purchased Impaired | Residential 1-4 Family - Commercial | Doubtful    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   0
Purchased Impaired | Residential 1-4 Family - Consumer    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   14,713
Purchased Impaired | Residential 1-4 Family - Consumer | Pass    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   9,947
Purchased Impaired | Residential 1-4 Family - Consumer | Watch & Special Mention    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   557
Purchased Impaired | Residential 1-4 Family - Consumer | Substandard    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   4,209
Purchased Impaired | Residential 1-4 Family - Consumer | Doubtful    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   0
Purchased Impaired | Residential 1-4 Family - Revolving    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   4,127
Purchased Impaired | Residential 1-4 Family - Revolving | Pass    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   2,887
Purchased Impaired | Residential 1-4 Family - Revolving | Watch & Special Mention    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   707
Purchased Impaired | Residential 1-4 Family - Revolving | Substandard    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   533
Purchased Impaired | Residential 1-4 Family - Revolving | Doubtful    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   0
Purchased Impaired | Auto    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   4
Purchased Impaired | Auto | Pass    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   2
Purchased Impaired | Auto | Watch & Special Mention    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   0
Purchased Impaired | Auto | Substandard    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   2
Purchased Impaired | Auto | Doubtful    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   0
Purchased Impaired | Consumer    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   668
Purchased Impaired | Consumer | Pass    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   657
Purchased Impaired | Consumer | Watch & Special Mention    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   0
Purchased Impaired | Consumer | Substandard    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   11
Purchased Impaired | Consumer | Doubtful    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   0
Purchased Impaired | Other Commercial    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   344
Purchased Impaired | Other Commercial | Pass    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   120
Purchased Impaired | Other Commercial | Watch & Special Mention    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   224
Purchased Impaired | Other Commercial | Substandard    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   0
Purchased Impaired | Other Commercial | Doubtful    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   0
Purchased Impaired | Commercial Portfolio    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   86,681
Purchased Impaired | Commercial Portfolio | Pass    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   32,922
Purchased Impaired | Commercial Portfolio | Watch & Special Mention    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   27,931
Purchased Impaired | Commercial Portfolio | Substandard    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   25,828
Purchased Impaired | Commercial Portfolio | Doubtful    
Financing Receivable, Recorded Investment [Line Items]    
Loans, Total   $ 0