XML 78 R62.htm IDEA: XBRL DOCUMENT
v3.24.0.1

LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES (Loans Receivables Related Risk Rating) (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Financing Receivable, Recorded Investment [Line Items] |  |
Loans, Total | $ 15,635,043 | $ 14,449,142
Construction and Land Development |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 289,984 | 362,027
Current period gross writeoff, Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 445,328 | 504,934
Current period gross writeoff, Fiscal Year Before Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 214,089 | 107,599
Current period gross writeoff, Two Years Before Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 41,573 | 17,402
Current period gross writeoff, Three Years Before Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 11,139 | 35,261
Current period gross writeoff, Four Years Before Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Prior | 41,600 | 39,692
Current period gross writeoff, Prior | (11) |
Financing Receivable, Revolving Loans | 64,137 | 34,345
Current period gross writeoff, Revolving Loans | 0 |
Loans, Total | 1,107,850 | 1,101,260
Current period gross writeoff, Total | (11) |
Construction and Land Development | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 289,786 | 357,688
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 440,473 | 499,738
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 192,148 | 107,559
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 19,536 | 17,191
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 10,934 | 33,801
Term Loans Amortized Cost Basis by Origination Year, Prior | 38,841 | 36,335
Financing Receivable, Revolving Loans | 64,137 | 34,345
Loans, Total | 1,055,855 | 1,086,657
Construction and Land Development | Watch |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 84 | 242
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 3,611 | 1,637
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 16,249 | 0
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 0 | 115
Term Loans Amortized Cost Basis by Origination Year, Prior | 2,127 | 1,669
Financing Receivable, Revolving Loans | 0 | 0
Loans, Total | 22,071 | 3,663
Construction and Land Development | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 0 | 2,843
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 0 | 411
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 4,444 | 0
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 1,332 | 0
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Prior | 367 | 93
Financing Receivable, Revolving Loans | 0 | 0
Loans, Total | 6,143 | 3,347
Construction and Land Development | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 114 | 1,254
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 1,244 | 3,148
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 1,248 | 40
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 20,705 | 211
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 205 | 1,345
Term Loans Amortized Cost Basis by Origination Year, Prior | 265 | 1,595
Financing Receivable, Revolving Loans | 0 | 0
Loans, Total | 23,781 | 7,593
Commercial Real Estate - Owner Occupied |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 182,694 | 260,013
Current period gross writeoff, Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 260,049 | 218,411
Current period gross writeoff, Fiscal Year Before Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 199,047 | 260,651
Current period gross writeoff, Two Years Before Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 244,297 | 296,498
Current period gross writeoff, Three Years Before Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 273,798 | 241,069
Current period gross writeoff, Four Years Before Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Prior | 814,203 | 687,314
Current period gross writeoff, Prior | (141) |
Financing Receivable, Revolving Loans | 24,699 | 18,652
Current period gross writeoff, Revolving Loans | 0 |
Loans, Total | 1,998,787 | 1,982,608
Current period gross writeoff, Total | (141) |
Commercial Real Estate - Owner Occupied | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 175,627 | 258,953
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 257,889 | 215,414
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 194,030 | 257,740
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 239,549 | 282,110
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 259,502 | 228,410
Term Loans Amortized Cost Basis by Origination Year, Prior | 750,180 | 624,238
Financing Receivable, Revolving Loans | 23,689 | 17,190
Loans, Total | 1,900,466 | 1,884,055
Commercial Real Estate - Owner Occupied | Watch |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 5,919 | 1,060
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 1,311 | 176
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 4,768 | 2,437
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 4,422 | 9,567
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 9,146 | 9,736
Term Loans Amortized Cost Basis by Origination Year, Prior | 27,829 | 31,331
Financing Receivable, Revolving Loans | 399 | 916
Loans, Total | 53,794 | 55,223
Commercial Real Estate - Owner Occupied | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 786 | 0
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 849 | 256
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 249 | 0
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 0 | 93
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 5,150 | 1,332
Term Loans Amortized Cost Basis by Origination Year, Prior | 9,549 | 18,766
Financing Receivable, Revolving Loans | 611 | 132
Loans, Total | 17,194 | 20,579
Commercial Real Estate - Owner Occupied | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 362 | 0
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 0 | 2,565
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 0 | 474
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 326 | 4,728
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 0 | 1,591
Term Loans Amortized Cost Basis by Origination Year, Prior | 26,645 | 12,979
Financing Receivable, Revolving Loans | 0 | 414
Loans, Total | 27,333 | 22,751
Commercial Real Estate - Non-Owner Occupied |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 379,058 | 496,311
Current period gross writeoff, Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 549,782 | 664,128
Current period gross writeoff, Fiscal Year Before Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 713,933 | 397,635
Current period gross writeoff, Two Years Before Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 352,405 | 558,410
Current period gross writeoff, Three Years Before Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 531,007 | 422,390
Current period gross writeoff, Four Years Before Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Prior | 1,598,785 | 1,422,450
Current period gross writeoff, Prior | (3,528) |
Financing Receivable, Revolving Loans | 47,431 | 34,806
Current period gross writeoff, Revolving Loans | 0 |
Loans, Total | 4,172,401 | 3,996,130
Current period gross writeoff, Total | (3,528) |
Commercial Real Estate - Non-Owner Occupied | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 374,221 | 496,079
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 548,262 | 661,977
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 710,122 | 385,084
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 334,449 | 517,834
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 492,782 | 373,126
Term Loans Amortized Cost Basis by Origination Year, Prior | 1,419,882 | 1,389,507
Financing Receivable, Revolving Loans | 35,276 | 34,804
Loans, Total | 3,914,994 | 3,858,411
Commercial Real Estate - Non-Owner Occupied | Watch |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 1,520 | 2,151
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 1,690 | 2,091
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 0 | 11,915
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 32,326 | 19,550
Term Loans Amortized Cost Basis by Origination Year, Prior | 82,930 | 20,683
Financing Receivable, Revolving Loans | 0 | 2
Loans, Total | 118,466 | 56,392
Commercial Real Estate - Non-Owner Occupied | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 0 | 232
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 0 | 25,578
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 0 | 702
Term Loans Amortized Cost Basis by Origination Year, Prior | 67,001 | 7,381
Financing Receivable, Revolving Loans | 12,155 | 0
Loans, Total | 79,156 | 33,893
Commercial Real Estate - Non-Owner Occupied | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 4,837 | 0
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 2,121 | 10,460
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 17,956 | 3,083
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 5,899 | 29,012
Term Loans Amortized Cost Basis by Origination Year, Prior | 28,972 | 4,879
Financing Receivable, Revolving Loans | 0 | 0
Loans, Total | 59,785 | 47,434
Commercial and Industrial |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 984,106 | 851,040
Current period gross writeoff, Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 689,376 | 539,022
Current period gross writeoff, Fiscal Year Before Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 411,809 | 281,280
Current period gross writeoff, Two Years Before Current Fiscal Year | (101) |
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 185,267 | 192,358
Current period gross writeoff, Three Years Before Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 142,872 | 82,294
Current period gross writeoff, Four Years Before Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Prior | 178,005 | 125,422
Current period gross writeoff, Prior | (17) |
Financing Receivable, Revolving Loans | 997,912 | 911,933
Current period gross writeoff, Revolving Loans | (1,812) |
Loans, Total | 3,589,347 | 2,983,349
Current period gross writeoff, Total | (1,930) |
Commercial and Industrial | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 981,290 | 849,547
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 617,805 | 536,982
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 409,973 | 262,093
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 178,578 | 182,263
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 122,160 | 67,648
Term Loans Amortized Cost Basis by Origination Year, Prior | 168,368 | 120,326
Financing Receivable, Revolving Loans | 923,359 | 846,059
Loans, Total | 3,401,533 | 2,864,918
Commercial and Industrial | Watch |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 2,708 | 1,399
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 38,711 | 1,305
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 512 | 18,682
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 1,379 | 5,039
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 18,065 | 12,843
Term Loans Amortized Cost Basis by Origination Year, Prior | 4,943 | 1,984
Financing Receivable, Revolving Loans | 22,832 | 41,836
Loans, Total | 89,150 | 83,088
Commercial and Industrial | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 108 | 0
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 32,714 | 222
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 981 | 393
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 3,310 | 2,145
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 1,722 | 354
Term Loans Amortized Cost Basis by Origination Year, Prior | 1,513 | 1,773
Financing Receivable, Revolving Loans | 19,865 | 12,380
Loans, Total | 60,213 | 17,267
Commercial and Industrial | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 0 | 94
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 146 | 513
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 343 | 112
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 2,000 | 2,911
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 925 | 1,449
Term Loans Amortized Cost Basis by Origination Year, Prior | 3,181 | 1,339
Financing Receivable, Revolving Loans | 31,856 | 11,658
Loans, Total | 38,451 | 18,076
Multifamily Real Estate |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 36,133 | 111,798
Current period gross writeoff, Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 129,854 | 90,952
Current period gross writeoff, Fiscal Year Before Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 321,918 | 204,159
Current period gross writeoff, Two Years Before Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 222,422 | 51,416
Current period gross writeoff, Three Years Before Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 49,582 | 60,325
Current period gross writeoff, Four Years Before Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Prior | 252,028 | 232,248
Current period gross writeoff, Prior | 0 |
Financing Receivable, Revolving Loans | 50,060 | 52,025
Current period gross writeoff, Revolving Loans | 0 |
Loans, Total | 1,061,997 | 802,923
Current period gross writeoff, Total | 0 |
Multifamily Real Estate | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 21,911 | 111,798
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 129,854 | 90,952
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 321,918 | 204,159
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 222,172 | 47,240
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 45,879 | 59,883
Term Loans Amortized Cost Basis by Origination Year, Prior | 250,887 | 231,745
Financing Receivable, Revolving Loans | 50,060 | 52,025
Loans, Total | 1,042,681 | 797,802
Multifamily Real Estate | Watch |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 0 | 350
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 0 | 442
Term Loans Amortized Cost Basis by Origination Year, Prior | 914 | 416
Financing Receivable, Revolving Loans | 0 | 0
Loans, Total | 914 | 1,208
Multifamily Real Estate | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 250 | 3,826
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Prior | 81 | 87
Financing Receivable, Revolving Loans | 0 | 0
Loans, Total | 331 | 3,913
Multifamily Real Estate | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 14,222 |
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 3,703 |
Term Loans Amortized Cost Basis by Origination Year, Prior | 146 |
Financing Receivable, Revolving Loans | 0 |
Loans, Total | 18,071 |
Residential 1-4 Family - Commercial |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 41,784 | 59,034
Current period gross writeoff, Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 67,882 | 87,513
Current period gross writeoff, Fiscal Year Before Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 78,515 | 79,143
Current period gross writeoff, Two Years Before Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 70,278 | 59,807
Current period gross writeoff, Three Years Before Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 45,879 | 40,677
Current period gross writeoff, Four Years Before Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Prior | 217,278 | 210,674
Current period gross writeoff, Prior | 0 |
Financing Receivable, Revolving Loans | 964 | 1,215
Current period gross writeoff, Revolving Loans | 0 |
Loans, Total | 522,580 | 538,063
Current period gross writeoff, Total | 0 |
Residential 1-4 Family - Commercial | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 41,631 | 58,534
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 67,495 | 86,881
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 77,321 | 77,110
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 69,779 | 50,721
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 44,498 | 38,090
Term Loans Amortized Cost Basis by Origination Year, Prior | 203,125 | 199,783
Financing Receivable, Revolving Loans | 604 | 803
Loans, Total | 504,453 | 511,922
Residential 1-4 Family - Commercial | Watch |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 49 | 500
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 387 | 0
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 580 | 539
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 220 | 852
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 757 | 1,532
Term Loans Amortized Cost Basis by Origination Year, Prior | 8,854 | 5,378
Financing Receivable, Revolving Loans | 107 | 113
Loans, Total | 10,954 | 8,914
Residential 1-4 Family - Commercial | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 47 | 0
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 0 | 94
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 0 | 7,771
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 0 | 582
Term Loans Amortized Cost Basis by Origination Year, Prior | 1,302 | 2,630
Financing Receivable, Revolving Loans | 0 | 0
Loans, Total | 1,349 | 11,077
Residential 1-4 Family - Commercial | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 57 | 0
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 0 | 632
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 614 | 1,400
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 279 | 463
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 624 | 473
Term Loans Amortized Cost Basis by Origination Year, Prior | 3,997 | 2,883
Financing Receivable, Revolving Loans | 253 | 299
Loans, Total | 5,824 | 6,150
Other Commercial |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 215,700 | 202,549
Current period gross writeoff, Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 180,346 | 211,438
Current period gross writeoff, Fiscal Year Before Current Fiscal Year | (101) |
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 165,732 | 149,567
Current period gross writeoff, Two Years Before Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 114,870 | 119,807
Current period gross writeoff, Three Years Before Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 123,519 | 3,522
Current period gross writeoff, Four Years Before Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Prior | 66,891 | 72,678
Current period gross writeoff, Prior | (3,016) |
Financing Receivable, Revolving Loans | 9,850 | 14,268
Current period gross writeoff, Revolving Loans | 0 |
Loans, Total | 876,908 | 773,829
Current period gross writeoff, Total | (3,117) |
Other Commercial | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 201,252 | 197,454
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 180,346 | 211,438
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 165,732 | 149,567
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 114,838 | 119,795
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 123,515 | 3,522
Term Loans Amortized Cost Basis by Origination Year, Prior | 62,284 | 69,243
Financing Receivable, Revolving Loans | 9,850 | 14,177
Loans, Total | 857,817 | 765,196
Other Commercial | Watch |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 14,355 | 5,095
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 32 | 12
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 4 | 0
Term Loans Amortized Cost Basis by Origination Year, Prior | 3,977 | 3,435
Financing Receivable, Revolving Loans | 0 | 0
Loans, Total | 18,368 | 8,542
Other Commercial | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 93 |
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Prior | 630 |
Financing Receivable, Revolving Loans | 0 |
Loans, Total | 723 |
Other Commercial | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year |  | 0
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year |  | 0
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year |  | 0
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year |  | 0
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year |  | 0
Term Loans Amortized Cost Basis by Origination Year, Prior |  | 0
Financing Receivable, Revolving Loans |  | 91
Loans, Total |  | 91
Commercial Portfolio |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 2,129,459 | 2,342,772
Current period gross writeoff, Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 2,322,617 | 2,316,398
Current period gross writeoff, Fiscal Year Before Current Fiscal Year | (101) |
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 2,105,043 | 1,480,034
Current period gross writeoff, Two Years Before Current Fiscal Year | (101) |
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 1,231,112 | 1,295,698
Current period gross writeoff, Three Years Before Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 1,177,796 | 885,538
Current period gross writeoff, Four Years Before Current Fiscal Year | 0 |
Term Loans Amortized Cost Basis by Origination Year, Prior | 3,168,790 | 2,790,478
Current period gross writeoff, Prior | (6,713) |
Financing Receivable, Revolving Loans | 1,195,053 | 1,067,244
Current period gross writeoff, Revolving Loans | (1,812) |
Loans, Total | 13,329,870 | 12,178,162
Current period gross writeoff, Total | (8,727) |
Commercial Portfolio | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 2,085,718 | 2,330,053
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 2,242,124 | 2,303,382
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 2,071,244 | 1,443,312
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 1,178,901 | 1,217,154
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 1,099,270 | 804,480
Term Loans Amortized Cost Basis by Origination Year, Prior | 2,893,567 | 2,671,177
Financing Receivable, Revolving Loans | 1,106,975 | 999,403
Loans, Total | 12,677,799 | 11,768,961
Commercial Portfolio | Watch |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 23,115 | 8,296
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 45,540 | 5,269
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 23,799 | 23,749
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 6,053 | 27,735
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 60,298 | 44,218
Term Loans Amortized Cost Basis by Origination Year, Prior | 131,574 | 64,896
Financing Receivable, Revolving Loans | 23,338 | 42,867
Loans, Total | 313,717 | 217,030
Commercial Portfolio | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 1,034 | 3,075
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 33,563 | 889
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 5,674 | 487
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 4,892 | 39,413
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 6,872 | 2,970
Term Loans Amortized Cost Basis by Origination Year, Prior | 80,443 | 30,730
Financing Receivable, Revolving Loans | 32,631 | 12,512
Loans, Total | 165,109 | 90,076
Commercial Portfolio | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 19,592 | 1,348
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 1,390 | 6,858
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 4,326 | 12,486
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 41,266 | 11,396
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 11,356 | 33,870
Term Loans Amortized Cost Basis by Origination Year, Prior | 63,206 | 23,675
Financing Receivable, Revolving Loans | 32,109 | 12,462
Loans, Total | $ 173,245 | $ 102,095

X
- Definition Aggregate amount, after recoveries, of loans and leases that have been written-off. + References No definition available. + Details
Name: | aub_AllowanceForLoanAndLeaseLossesAggregateWriteOffs
Namespace Prefix: | aub_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements. + References No definition available. + Details
Name: | aub_FinancingReceivableAndNetInvestmentInLeaseExcludingAccruedInterestBeforeAllowanceForCreditLoss
Namespace Prefix: | aub_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Write-offs of financing and lease receivables, if applicable, originated more than five years prior to current fiscal year. + References No definition available. + Details
Name: | aub_FinancingReceivableAndNetInvestmentInLeaseExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteOffs
Namespace Prefix: | aub_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount excluding accrued interest of financing receivable and lease receivable, if applicable, originated four years prior to current fiscal year. + References No definition available. + Details
Name: | aub_FinancingReceivableAndNetInvestmentInLeaseExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear
Namespace Prefix: | aub_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Write-offs of financing and lease receivables, if applicable, originated four years prior to current fiscal year. + References No definition available. + Details
Name: | aub_FinancingReceivableAndNetInvestmentInLeaseExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteOffs
Namespace Prefix: | aub_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount excluding accrued interest of financing receivable and lease receivable, if applicable, originated three years prior to current fiscal year. + References No definition available. + Details
Name: | aub_FinancingReceivableAndNetInvestmentInLeaseExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear
Namespace Prefix: | aub_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Write-offs of financing and lease receivables, if applicable, originated three years prior to current fiscal year. + References No definition available. + Details
Name: | aub_FinancingReceivableAndNetInvestmentInLeaseExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteOffs
Namespace Prefix: | aub_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount excluding accrued interest of financing and lease receivables, if applicable, originated in current fiscal year. + References No definition available. + Details
Name: | aub_FinancingReceivableAndNetInvestmentInLeaseExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear
Namespace Prefix: | aub_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Write-offs of financing and lease receivables, if applicable, originated in current fiscal year. + References No definition available. + Details
Name: | aub_FinancingReceivableAndNetInvestmentInLeaseExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteOffs
Namespace Prefix: | aub_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount excluding accrued interest of financing receivable, including net investment in lease if applicable, originated two years prior to current fiscal year. + References No definition available. + Details
Name: | aub_FinancingReceivableAndNetInvestmentInLeaseExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear
Namespace Prefix: | aub_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Write-offs of financing and lease receivables, if applicable, originated two years prior to current fiscal year. + References No definition available. + Details
Name: | aub_FinancingReceivableAndNetInvestmentInLeaseExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteOffs
Namespace Prefix: | aub_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amortized cost excluding accrued interest of financing receivable and lease receivables, if applicable, originated in fiscal year prior to current fiscal year. + References No definition available. + Details
Name: | aub_FinancingReceivableAndNetInvestmentInLeaseExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear
Namespace Prefix: | aub_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Write-offs of financing and lease receivables, if applicable, originated in fiscal year prior to current fiscal year. + References No definition available. + Details
Name: | aub_FinancingReceivableAndNetInvestmentInLeaseExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteOffs
Namespace Prefix: | aub_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount excluding accrued interest of financing receivable originated more than four years prior to current fiscal year, including lease receivables if applicable. + References No definition available. + Details
Name: | aub_FinancingReceivableAndNetinvestmentInLeaseExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear
Namespace Prefix: | aub_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Write-offs of financing receivable that can be withdrawn, repaid, and redrawn. + References No definition available. + Details
Name: | aub_FinancingReceivableExcludingAccruedInterestRevolvingWirteOffs
Namespace Prefix: | aub_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amortized cost excluding accrued interest, of financing receivable that can be withdrawn, repaid, and redrawn. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestRevolving
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-5 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479294/326-20-55-79 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConstructionLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_PassMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=aub_WatchMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_SpecialMentionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_SubstandardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=aub_CommercialRealEstateOwnerOccupiedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=aub_CommercialRealEstateNonOwnerOccupiedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=aub_CommercialAndIndustrialMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=aub_MultifamilyRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=aub_Residential1To4FamilyCommercialMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=aub_OtherCommercialMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |