XML 90 R72.htm IDEA: XBRL DOCUMENT
v3.25.0.1

LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES (Loans Receivables Related Risk Rating) (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Financing Receivable, Recorded Investment [Line Items] |  |
Loans, Total | $ 18,470,621 | $ 15,635,043
Construction Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 351,248 | 289,984
Current period gross writeoff, Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 654,674 | 445,328
Current period gross writeoff, Fiscal Year Before Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 414,521 | 214,089
Current period gross writeoff, Two Years Before Current Fiscal Year | (1,109) | 0
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 122,206 | 41,573
Current period gross writeoff, Three Years Before Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 16,979 | 11,139
Current period gross writeoff, Four Years Before Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Prior | 51,240 | 41,600
Current period gross writeoff, Prior | 0 | (11)
Financing Receivable, Excluding Accrued Interest, Revolving | 120,240 | 64,137
Current period gross writeoff, Revolving Loans | 0 | 0
Loans, Total | 1,731,108 | 1,107,850
Current period gross writeoff, Total | (1,109) | (11)
Construction Loans [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 350,344 | 289,786
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 630,033 | 440,473
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 372,483 | 192,148
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 120,851 | 19,536
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 14,180 | 10,934
Term Loans Amortized Cost Basis by Origination Year, Prior | 46,671 | 38,841
Financing Receivable, Excluding Accrued Interest, Revolving | 120,240 | 64,137
Loans, Total | 1,654,802 | 1,055,855
Construction Loans [Member] | Watch |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 3 | 84
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 22,790 | 3,611
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 18,172 | 16,249
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 384 | 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 | 717 | 2,127
Financing Receivable, Excluding Accrued Interest, Revolving | 0 | 0
Loans, Total | 42,066 | 22,071
Construction Loans [Member] | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 739 | 0
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 1,771 | 0
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 1,629 | 4,444
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 226 | 1,332
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 1,332 | 0
Term Loans Amortized Cost Basis by Origination Year, Prior | 1,139 | 367
Financing Receivable, Excluding Accrued Interest, Revolving | 0 | 0
Loans, Total | 6,836 | 6,143
Construction Loans [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 162 | 114
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 80 | 1,244
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 22,237 | 1,248
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 745 | 20,705
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 1,467 | 205
Term Loans Amortized Cost Basis by Origination Year, Prior | 2,713 | 265
Financing Receivable, Excluding Accrued Interest, Revolving | 0 | 0
Loans, Total | 27,404 | 23,781
CRE - Owner Occupied |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 183,195 | 182,694
Current period gross writeoff, Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 253,080 | 260,049
Current period gross writeoff, Fiscal Year Before Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 298,182 | 199,047
Current period gross writeoff, Two Years Before Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 266,738 | 244,297
Current period gross writeoff, Three Years Before Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 255,393 | 273,798
Current period gross writeoff, Four Years Before Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Prior | 1,083,607 | 814,203
Current period gross writeoff, Prior | (354) | (141)
Financing Receivable, Excluding Accrued Interest, Revolving | 29,924 | 24,699
Current period gross writeoff, Revolving Loans | 0 | 0
Loans, Total | 2,370,119 | 1,998,787
Current period gross writeoff, Total | (354) | (141)
CRE - Owner Occupied | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 152,865 | 175,627
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 243,842 | 257,889
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 293,260 | 194,030
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 262,430 | 239,549
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 248,187 | 259,502
Term Loans Amortized Cost Basis by Origination Year, Prior | 1,014,962 | 750,180
Financing Receivable, Excluding Accrued Interest, Revolving | 27,316 | 23,689
Loans, Total | 2,242,862 | 1,900,466
CRE - Owner Occupied | Watch |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 4,455 | 5,919
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 1,391 | 1,311
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 1,424 | 4,768
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 1,854 | 4,422
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 2,507 | 9,146
Term Loans Amortized Cost Basis by Origination Year, Prior | 35,093 | 27,829
Financing Receivable, Excluding Accrued Interest, Revolving | 79 | 399
Loans, Total | 46,803 | 53,794
CRE - Owner Occupied | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 1,153 | 786
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 6,659 | 849
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 1,577 | 249
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 2,102 | 0
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 2,266 | 5,150
Term Loans Amortized Cost Basis by Origination Year, Prior | 11,556 | 9,549
Financing Receivable, Excluding Accrued Interest, Revolving | 2,389 | 611
Loans, Total | 27,702 | 17,194
CRE - Owner Occupied | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 24,722 | 362
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 1,188 | 0
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 1,921 | 0
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 352 | 326
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 2,433 | 0
Term Loans Amortized Cost Basis by Origination Year, Prior | 21,996 | 26,645
Financing Receivable, Excluding Accrued Interest, Revolving | 140 | 0
Loans, Total | 52,752 | 27,333
CRE - Non-Owner Occupied |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 350,375 | 379,058
Current period gross writeoff, Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 527,219 | 549,782
Current period gross writeoff, Fiscal Year Before Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 717,962 | 713,933
Current period gross writeoff, Two Years Before Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 849,063 | 352,405
Current period gross writeoff, Three Years Before Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 425,727 | 531,007
Current period gross writeoff, Four Years Before Current Fiscal Year | (3,386) | 0
Term Loans Amortized Cost Basis by Origination Year, Prior | 2,011,419 | 1,598,785
Current period gross writeoff, Prior | 0 | (3,528)
Financing Receivable, Excluding Accrued Interest, Revolving | 53,825 | 47,431
Current period gross writeoff, Revolving Loans | 0 | 0
Loans, Total | 4,935,590 | 4,172,401
Current period gross writeoff, Total | (3,386) | (3,528)
CRE - Non-Owner Occupied | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 349,991 | 374,221
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 514,460 | 548,262
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 692,155 | 710,122
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 835,195 | 334,449
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 381,544 | 492,782
Term Loans Amortized Cost Basis by Origination Year, Prior | 1,838,343 | 1,419,882
Financing Receivable, Excluding Accrued Interest, Revolving | 40,741 | 35,276
Loans, Total | 4,652,429 | 3,914,994
CRE - 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 | 150 | 1,520
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 7,465 | 1,690
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 11,855 | 0
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 0 | 32,326
Term Loans Amortized Cost Basis by Origination Year, Prior | 70,113 | 82,930
Financing Receivable, Excluding Accrued Interest, Revolving | 13,013 | 0
Loans, Total | 102,596 | 118,466
CRE - Non-Owner Occupied | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 384 | 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 | 18,342 | 0
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 883 | 0
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 7,387 | 0
Term Loans Amortized Cost Basis by Origination Year, Prior | 47,286 | 67,001
Financing Receivable, Excluding Accrued Interest, Revolving | 0 | 12,155
Loans, Total | 74,282 | 79,156
CRE - Non-Owner Occupied | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 0 | 4,837
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 12,609 | 0
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 0 | 2,121
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 1,130 | 17,956
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 36,796 | 5,899
Term Loans Amortized Cost Basis by Origination Year, Prior | 55,677 | 28,972
Financing Receivable, Excluding Accrued Interest, Revolving | 71 | 0
Loans, Total | 106,283 | 59,785
Commercial and Industrial |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 801,644 | 984,106
Current period gross writeoff, Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 638,772 | 689,376
Current period gross writeoff, Fiscal Year Before Current Fiscal Year | (42) | 0
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 603,204 | 411,809
Current period gross writeoff, Two Years Before Current Fiscal Year | (1,081) | (101)
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 315,468 | 185,267
Current period gross writeoff, Three Years Before Current Fiscal Year | (145) | 0
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 127,355 | 142,872
Current period gross writeoff, Four Years Before Current Fiscal Year | (147) | 0
Term Loans Amortized Cost Basis by Origination Year, Prior | 250,238 | 178,005
Current period gross writeoff, Prior | (928) | (17)
Financing Receivable, Excluding Accrued Interest, Revolving | 1,128,014 | 997,912
Current period gross writeoff, Revolving Loans | (1,187) | (1,812)
Loans, Total | 3,864,695 | 3,589,347
Current period gross writeoff, Total | (3,530) | (1,930)
Commercial and Industrial | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 787,683 | 981,290
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 593,676 | 617,805
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 534,064 | 409,973
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 300,348 | 178,578
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 124,214 | 122,160
Term Loans Amortized Cost Basis by Origination Year, Prior | 227,352 | 168,368
Financing Receivable, Excluding Accrued Interest, Revolving | 982,085 | 923,359
Loans, Total | 3,549,422 | 3,401,533
Commercial and Industrial | Watch |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 2,458 | 2,708
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 30,428 | 38,711
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 48,661 | 512
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 6,980 | 1,379
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 486 | 18,065
Term Loans Amortized Cost Basis by Origination Year, Prior | 2,434 | 4,943
Financing Receivable, Excluding Accrued Interest, Revolving | 24,153 | 22,832
Loans, Total | 115,600 | 89,150
Commercial and Industrial | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 2,289 | 108
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 12,328 | 32,714
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 15,458 | 981
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 4,001 | 3,310
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 2,183 | 1,722
Term Loans Amortized Cost Basis by Origination Year, Prior | 19,125 | 1,513
Financing Receivable, Excluding Accrued Interest, Revolving | 64,204 | 19,865
Loans, Total | 119,588 | 60,213
Commercial and Industrial | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 9,214 | 0
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 2,340 | 146
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 3,423 | 343
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 4,139 | 2,000
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 472 | 925
Term Loans Amortized Cost Basis by Origination Year, Prior | 1,327 | 3,181
Financing Receivable, Excluding Accrued Interest, Revolving | 29,839 | 31,856
Loans, Total | 50,754 | 38,451
Commercial and Industrial | Doubtful [Member] |  |
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 | 1,598 |
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, Excluding Accrued Interest, Revolving | 27,733 |
Loans, Total | 29,331 |
Multifamily Real Estate |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 80,345 | 36,133
Current period gross writeoff, Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 48,270 | 129,854
Current period gross writeoff, Fiscal Year Before Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 261,212 | 321,918
Current period gross writeoff, Two Years Before Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 303,730 | 222,422
Current period gross writeoff, Three Years Before Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 206,078 | 49,582
Current period gross writeoff, Four Years Before Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Prior | 304,868 | 252,028
Current period gross writeoff, Prior | 0 | 0
Financing Receivable, Excluding Accrued Interest, Revolving | 35,706 | 50,060
Current period gross writeoff, Revolving Loans | 0 | 0
Loans, Total | 1,240,209 | 1,061,997
Current period gross writeoff, Total | 0 | 0
Multifamily Real Estate | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 80,345 | 21,911
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 34,060 | 129,854
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 259,493 | 321,918
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 229,950 | 222,172
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 205,699 | 45,879
Term Loans Amortized Cost Basis by Origination Year, Prior | 302,186 | 250,887
Financing Receivable, Excluding Accrued Interest, Revolving | 35,706 | 50,060
Loans, Total | 1,147,439 | 1,042,681
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 | 1,719 | 0
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 73,780 | 0
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 129 | 0
Term Loans Amortized Cost Basis by Origination Year, Prior | 0 | 914
Financing Receivable, Excluding Accrued Interest, Revolving | 0 | 0
Loans, Total | 75,628 | 914
Multifamily Real Estate | Special Mention [Member] |  |
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 | 250
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 250 | 0
Term Loans Amortized Cost Basis by Origination Year, Prior | 1,185 | 81
Financing Receivable, Excluding Accrued Interest, Revolving | 0 | 0
Loans, Total | 1,435 | 331
Multifamily Real Estate | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 0 | 14,222
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 14,210 | 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 | 0
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 0 | 3,703
Term Loans Amortized Cost Basis by Origination Year, Prior | 1,497 | 146
Financing Receivable, Excluding Accrued Interest, Revolving | 0 | 0
Loans, Total | 15,707 | 18,071
Residential 1-4 Family - Commercial |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 49,859 | 41,784
Current period gross writeoff, Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 66,811 | 67,882
Current period gross writeoff, Fiscal Year Before Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 140,238 | 78,515
Current period gross writeoff, Two Years Before Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 109,932 | 70,278
Current period gross writeoff, Three Years Before Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 80,739 | 45,879
Current period gross writeoff, Four Years Before Current Fiscal Year | (18) | 0
Term Loans Amortized Cost Basis by Origination Year, Prior | 261,824 | 217,278
Current period gross writeoff, Prior | 0 | 0
Financing Receivable, Excluding Accrued Interest, Revolving | 10,022 | 964
Current period gross writeoff, Revolving Loans | 0 | 0
Loans, Total | 719,425 | 522,580
Current period gross writeoff, Total | (18) | 0
Residential 1-4 Family - Commercial | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 49,068 | 41,631
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 66,307 | 67,495
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 115,526 | 77,321
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 108,751 | 69,779
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 79,090 | 44,498
Term Loans Amortized Cost Basis by Origination Year, Prior | 250,273 | 203,125
Financing Receivable, Excluding Accrued Interest, Revolving | 9,617 | 604
Loans, Total | 678,632 | 504,453
Residential 1-4 Family - Commercial | Watch |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 274 | 49
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 504 | 387
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 1,277 | 580
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 737 | 220
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 730 | 757
Term Loans Amortized Cost Basis by Origination Year, Prior | 6,571 | 8,854
Financing Receivable, Excluding Accrued Interest, Revolving | 152 | 107
Loans, Total | 10,245 | 10,954
Residential 1-4 Family - Commercial | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 0 | 47
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 | 23,435 | 0
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 215 | 0
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 331 | 0
Term Loans Amortized Cost Basis by Origination Year, Prior | 1,500 | 1,302
Financing Receivable, Excluding Accrued Interest, Revolving | 0 | 0
Loans, Total | 25,481 | 1,349
Residential 1-4 Family - Commercial | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 517 | 57
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 | 614
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 229 | 279
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 588 | 624
Term Loans Amortized Cost Basis by Origination Year, Prior | 3,480 | 3,997
Financing Receivable, Excluding Accrued Interest, Revolving | 253 | 253
Loans, Total | 5,067 | 5,824
Other Commercial |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 233,480 | 215,700
Current period gross writeoff, Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 199,773 | 180,346
Current period gross writeoff, Fiscal Year Before Current Fiscal Year | 0 | (101)
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 179,941 | 165,732
Current period gross writeoff, Two Years Before Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 162,503 | 114,870
Current period gross writeoff, Three Years Before Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 88,313 | 123,519
Current period gross writeoff, Four Years Before Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Prior | 166,987 | 66,891
Current period gross writeoff, Prior | (3,492) | (3,016)
Financing Receivable, Excluding Accrued Interest, Revolving | 106,467 | 9,850
Current period gross writeoff, Revolving Loans | 0 | 0
Loans, Total | 1,137,464 | 876,908
Current period gross writeoff, Total | (3,492) | (3,117)
Other Commercial | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 233,480 | 201,252
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 196,703 | 180,346
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 169,440 | 165,732
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 157,815 | 114,838
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 82,990 | 123,515
Term Loans Amortized Cost Basis by Origination Year, Prior | 161,984 | 62,284
Financing Receivable, Excluding Accrued Interest, Revolving | 106,368 | 9,850
Loans, Total | 1,108,780 | 857,817
Other Commercial | Watch |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 0 | 14,355
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 1,926 | 0
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 6,170 | 0
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 1,525 | 32
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 5,293 | 4
Term Loans Amortized Cost Basis by Origination Year, Prior | 4,419 | 3,977
Financing Receivable, Excluding Accrued Interest, Revolving | 0 | 0
Loans, Total | 19,333 | 18,368
Other Commercial | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 0 | 93
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 84 | 0
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 1,059 | 0
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 3,163 | 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 | 582 | 630
Financing Receivable, Excluding Accrued Interest, Revolving | 0 | 0
Loans, Total | 4,888 | 723
Other Commercial | Substandard [Member] |  |
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 | 1,060 |
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 3,272 |
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 | 30 |
Term Loans Amortized Cost Basis by Origination Year, Prior | 2 |
Financing Receivable, Excluding Accrued Interest, Revolving | 99 |
Loans, Total | 4,463 |
Commercial Portfolio Segment [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 2,050,146 | 2,129,459
Current period gross writeoff, Current Fiscal Year | 0 | 0
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 2,388,599 | 2,322,617
Current period gross writeoff, Fiscal Year Before Current Fiscal Year | (42) | (101)
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 2,615,260 | 2,105,043
Current period gross writeoff, Two Years Before Current Fiscal Year | (2,190) | (101)
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 2,129,640 | 1,231,112
Current period gross writeoff, Three Years Before Current Fiscal Year | (145) | 0
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 1,200,584 | 1,177,796
Current period gross writeoff, Four Years Before Current Fiscal Year | (3,551) | 0
Term Loans Amortized Cost Basis by Origination Year, Prior | 4,130,183 | 3,168,790
Current period gross writeoff, Prior | (4,774) | (6,713)
Financing Receivable, Excluding Accrued Interest, Revolving | 1,484,198 | 1,195,053
Current period gross writeoff, Revolving Loans | (1,187) | (1,812)
Loans, Total | 15,998,610 | 13,329,870
Current period gross writeoff, Total | (11,889) | (8,727)
Commercial Portfolio Segment [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 2,003,776 | 2,085,718
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 2,279,081 | 2,242,124
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 2,436,421 | 2,071,244
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 2,015,340 | 1,178,901
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 1,135,904 | 1,099,270
Term Loans Amortized Cost Basis by Origination Year, Prior | 3,841,771 | 2,893,567
Financing Receivable, Excluding Accrued Interest, Revolving | 1,322,073 | 1,106,975
Loans, Total | 15,034,366 | 12,677,799
Commercial Portfolio Segment [Member] | Watch |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 7,190 | 23,115
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 57,189 | 45,540
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 84,888 | 23,799
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 97,115 | 6,053
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 9,145 | 60,298
Term Loans Amortized Cost Basis by Origination Year, Prior | 119,347 | 131,574
Financing Receivable, Excluding Accrued Interest, Revolving | 37,397 | 23,338
Loans, Total | 412,271 | 313,717
Commercial Portfolio Segment [Member] | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 4,565 | 1,034
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 20,842 | 33,563
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 61,500 | 5,674
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 10,590 | 4,892
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 13,749 | 6,872
Term Loans Amortized Cost Basis by Origination Year, Prior | 82,373 | 80,443
Financing Receivable, Excluding Accrued Interest, Revolving | 66,593 | 32,631
Loans, Total | 260,212 | 165,109
Commercial Portfolio Segment [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Term Loans Amortized Cost Basis by Origination Year, Current Fiscal Year | 34,615 | 19,592
Term Loans Amortized Cost Basis by Origination Year, Fiscal Year Before Current Fiscal Year | 31,487 | 1,390
Term Loans Amortized Cost Basis by Origination Year, Two Years Before Current Fiscal Year | 30,853 | 4,326
Term Loans Amortized Cost Basis by Origination Year, Three Years Before Current Fiscal Year | 6,595 | 41,266
Term Loans Amortized Cost Basis by Origination Year, Four Years Before Current Fiscal Year | 41,786 | 11,356
Term Loans Amortized Cost Basis by Origination Year, Prior | 86,692 | 63,206
Financing Receivable, Excluding Accrued Interest, Revolving | 30,402 | 32,109
Loans, Total | 262,430 | $ 173,245
Commercial Portfolio Segment [Member] | Doubtful [Member] |  |
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 | 1,598 |
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, Excluding Accrued Interest, Revolving | 27,733 |
Loans, Total | $ 29,331 |

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://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 29 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-29 Reference 2: 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 3: 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_InternalCreditAssessmentAxis=us-gaap_DoubtfulMember
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: |