XML 57 R47.htm IDEA: XBRL DOCUMENT
v3.23.2

LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES (Troubled Loan Modifications) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2023
Financing Receivable, Modifications [Line Items] |  |
Amortized Cost | $ 11,539 | $ 30,991
Troubled Loan Modifications |  |
Financing Receivable, Modifications [Line Items] |  |
Amortized Cost |  | 31,000
Term Extension |  |
Financing Receivable, Modifications [Line Items] |  |
Amortized Cost | 5,920 | 25,137
Term Extension | Commercial and Industrial |  |
Financing Receivable, Modifications [Line Items] |  |
Amortized Cost | $ 5,549 | $ 5,549
% of Total Class of Financing Receivable | 0.16% | 0.16%
Weighted-average years added to life of loan | 2 months 12 days | 2 months 12 days
Term Extension | Commercial Real Estate - Non-Owner Occupied |  |
Financing Receivable, Modifications [Line Items] |  |
Amortized Cost | $ 0 | $ 19,001
% of Total Class of Financing Receivable | 0.00% | 0.46%
Weighted-average years added to life of loan |  | 6 months
Term Extension | Residential 1-4 Family - Mortgage |  |
Financing Receivable, Modifications [Line Items] |  |
Amortized Cost | $ 371 | $ 587
% of Total Class of Financing Receivable | 0.04% | 0.06%
Weighted-average years added to life of loan | 7 years 9 months 18 days | 10 years 8 months 12 days
Combination - Term Extension and Interest Rate Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Amortized Cost | $ 619 | $ 854
Combination - Term Extension and Interest Rate Reduction | Residential 1-4 Family - Mortgage |  |
Financing Receivable, Modifications [Line Items] |  |
Amortized Cost | $ 604 | $ 838
% of Total Class of Financing Receivable | 0.06% | 0.08%
Weighted-average years added to life of loan | 20 years 1 month 6 days | 20 years 3 months 18 days
Weighted-average contractual interest rate before loan modification | 8.40% | 8.20%
Weighted-average contractual interest rate after loan modification | 7.60% | 7.60%
Combination - Term Extension and Interest Rate Reduction | Residential 1-4 Family - Revolving |  |
Financing Receivable, Modifications [Line Items] |  |
Amortized Cost | $ 15 | $ 16
Weighted-average years added to life of loan | 19 years 1 month 6 days | 19 years 1 month 6 days
Weighted-average contractual interest rate before loan modification | 10.50% | 10.50%
Weighted-average contractual interest rate after loan modification | 7.30% | 7.30%
Principal Forgiveness |  |
Financing Receivable, Modifications [Line Items] |  |
Amortized Cost | $ 5,000 | $ 5,000
Principal Forgiveness | Commercial Real Estate - Non-Owner Occupied |  |
Financing Receivable, Modifications [Line Items] |  |
Amortized Cost | $ 5,000 | $ 5,000
% of Total Class of Financing Receivable | 0.12% | 0.12%
Loan modification, amount of principal reduction | $ 3,500 | $ 3,500

X
- Definition Percentage, before allowance for credit loss, of financing receivable to total financing receivable during the period. + References No definition available. + Details
Name: | aub_FinancingReceivableBeforeAllowanceForCreditLossToTotalPercentDuringPeriod
Namespace Prefix: | aub_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The length of loan duration extension for financing receivables that have been modified by troubled debt restructurings. + References No definition available. + Details
Name: | aub_FinancingReceivableModificationsLoanExtensionDuration
Namespace Prefix: | aub_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted-average interest rate, after troubled debt restructuring, of modified financing receivable. + References No definition available. + Details
Name: | aub_FinancingReceivableTroubledDebtRestructuringWeightedAverageInterestRatePostModification
Namespace Prefix: | aub_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted-average interest rate, before troubled debt restructuring, of financing receivable to be modified. + References No definition available. + Details
Name: | aub_FinancingReceivableTroubledDebtRestructuringWeightedAverageInterestRatePreModification
Namespace Prefix: | aub_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of principal reduction in a loan forgiveness agreement. + References No definition available. + Details
Name: | aub_LoanForgivenessAmountOfPrincipalReduction
Namespace Prefix: | aub_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-42 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-42 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 12A -Publisher FASB -URI https://asc.fasb.org//1943274/2147481933/310-10-55-12A Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 33 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-33 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 34 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-34 + Details
Name: | us-gaap_FinancingReceivableModificationsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amortized cost of financing receivable modified during period for debtor experiencing financial difficulty. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-42 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 12A -Publisher FASB -URI https://asc.fasb.org//1943274/2147481933/310-10-55-12A Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 33 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-33 + Details
Name: | us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_LoanRestructuringModificationAxis=aub_TroubledLoanModificationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LoanRestructuringModificationAxis=us-gaap_ExtendedMaturityMember
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_CommercialRealEstateNonOwnerOccupiedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=aub_Residential1To4FamilyConsumerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LoanRestructuringModificationAxis=aub_ExtendedMaturityAndContractualInterestRateReductionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=aub_Residential1To4FamilyRevolvingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LoanRestructuringModificationAxis=us-gaap_PrincipalForgivenessMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |