XML 38 R28.htm IDEA: XBRL DOCUMENT
v3.22.2.2

COMMITMENTS AND CONTINGENCIES (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2022
Commitments and Contingencies Disclosure [Abstract] |
Balances of Commitments and Contingencies | The following table presents the balances of commitments and contingencies as of the following dates (dollars in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | September 30, 2022 |  | December 31, 2021
Commitments with off-balance sheet risk: |  | ​ |  |  | ​ |
Commitments to extend credit (1) | ​ | $ | 3,411,234 | ​ | $ | 5,825,557
Letters of credit | ​ |  | 150,649 | ​ |  | 152,506
Total commitments with off-balance sheet risk | ​ | $ | 3,561,883 | ​ | $ | 5,978,063
(1) Includes unfunded overdraft protection. | ​ | ​ | ​ | ​ | ​ | ​
Schedule of Pledged Assets, Not Separately Reported on Statement of Financial Position | The Company pledges collateral to secure various financing and other activities that occur during the normal course of business as part of the liquidity management strategy. The following tables present the types of collateral pledged at September 30, 2022 and December 31, 2021 (dollars in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Pledged Assets as of September 30, 2022 | ​ | ​ | ​
​ |  | ​ | ​ |  | AFS |  | HTM |  | ​ | ​ |  | ​ | ​
​ | ​ | Cash | ​ | Securities (1) | ​ | Securities (1) | ​ | Loans (2) | ​ | Total
Public deposits | ​ | $ | — | ​ | $ | 576,066 | ​ | $ | 483,284 | ​ | $ | — | ​ | $ | 1,059,350
Repurchase agreements | ​ |  | — | ​ |  | 151,237 | ​ |  | — | ​ |  | — | ​ |  | 151,237
FHLB advances | ​ |  | — | ​ |  | 37,188 | ​ |  | — | ​ |  | 2,545,915 | ​ |  | 2,583,103
Derivatives | ​ |  | 237,546 | ​ |  | 56,593 | ​ |  | — | ​ |  | — | ​ |  | 294,139
Fed Funds | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 479,668 | ​ | ​ | 479,668
Other purposes | ​ |  | — | ​ | ​ | 26,667 | ​ | ​ | 834 | ​ | ​ | — | ​ | ​ | 27,501
Total pledged assets | ​ | $ | 237,546 | ​ | $ | 847,751 | ​ | $ | 484,118 | ​ | $ | 3,025,583 | ​ | $ | 4,594,998
​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Pledged Assets as of December 31, 2021 | ​ | ​ | ​
​ |  | ​ | ​ |  | AFS |  | HTM |  | ​ | ​ |  | ​ | ​
​ | ​ | Cash | ​ | Securities (1) | ​ | Securities (1) | ​ | Loans (2) | ​ | Total
Public deposits | ​ | $ | — | ​ | $ | 703,489 | ​ | $ | 472,243 | ​ | $ | — | ​ | $ | 1,175,732
Repurchase agreements | ​ |  | — | ​ |  | 130,217 | ​ |  | — | ​ |  | — | ​ |  | 130,217
FHLB advances | ​ |  | — | ​ |  | 43,722 | ​ |  | — | ​ |  | 4,263,259 | ​ |  | 4,306,981
Derivatives | ​ |  | 82,299 | ​ |  | 65,053 | ​ |  | — | ​ |  | — | ​ |  | 147,352
Fed Funds | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 392,067 | ​ | ​ | 392,067
Other purposes | ​ |  | — | ​ | ​ | 22,003 | ​ | ​ | 985 | ​ | ​ | — | ​ | ​ | 22,988
Total pledged assets | ​ | $ | 82,299 | ​ | $ | 964,484 | ​ | $ | 473,228 | ​ | $ | 4,655,326 | ​ | $ | 6,175,337
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(1) Balance represents market value. | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(2) Balance represents book value. | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​

X
- Definition Commitments and contingencies. + References No definition available. + Details
Name: | aub_CommitmentsAndContingenciesTableTextBlock
Namespace Prefix: | aub_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Schedule of Pledged Assets, Not Separately Reported on Statement of Financial Position [Table Text Block] + References No definition available. + Details
Name: | aub_ScheduleOfPledgedAssetsNotSeparatelyReportedOnStatementOfFinancialPositionTableTextBlock
Namespace Prefix: | aub_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration