XML 116 R97.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

COMMITMENTS AND CONTINGENCIES (Schedule of Securities Pledged as Collateral) (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Cash | $ 116,839 | $ 13,509
Loans | 4,139,672 | 3,337,289
Total pledged assets | 5,300,858 | 3,732,286
Available-for-sale Securities |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Securities pledged | 733,995 | 374,081
Held-to-maturity Securities |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Securities pledged | 310,352 | 7,407
Public deposits |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Cash | 0 | 0
Loans | 0 | 0
Total pledged assets | 759,362 | 300,576
Public deposits | Available-for-sale Securities |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Securities pledged | 467,266 | 293,169
Public deposits | Held-to-maturity Securities |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Securities pledged | 292,096 | 7,407
Repurchase agreements |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Cash | 0 | 0
Loans | 0 | 0
Total pledged assets | 86,901 | 55,269
Repurchase agreements | Available-for-sale Securities |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Securities pledged | 79,299 | 55,269
Repurchase agreements | Held-to-maturity Securities |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Securities pledged | 7,602 | 0
FHLB advances |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Cash | 0 | 0
Loans | 3,846,934 | 3,337,289
Total pledged assets | 3,910,746 | 3,337,777
FHLB advances | Available-for-sale Securities |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Securities pledged | 63,812 | 488
FHLB advances | Held-to-maturity Securities |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Securities pledged | 0 | 0
Federal Funds [Member] |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Cash | 0 |
Loans | 292,738 |
Total pledged assets | 292,738 |
Federal Funds [Member] | Available-for-sale Securities |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Securities pledged | 0 |
Federal Funds [Member] | Held-to-maturity Securities |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Securities pledged | 0 |
Derivatives |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Cash | 116,839 | 13,509
Loans | 0 | 0
Total pledged assets | 118,099 | 15,447
Derivatives | Available-for-sale Securities |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Securities pledged | 1,260 | 1,938
Derivatives | Held-to-maturity Securities |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Securities pledged | 0 | 0
Other purposes |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Cash | 0 | 0
Loans | 0 | 0
Total pledged assets | 133,012 | 23,217
Other purposes | Available-for-sale Securities |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Securities pledged | 122,358 | 23,217
Other purposes | Held-to-maturity Securities |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Securities pledged | $ 10,654 | $ 0

X
- Definition Cash Pledged as Collateral. + References No definition available. + Details
Name: | aub_CashPledgedAsCollateral
Namespace Prefix: | aub_
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 No definition available. + Details
Name: | us-gaap_FinancialInstrumentsOwnedAndPledgedAsCollateralLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The carrying amount, as of the date of the latest financial statement presented, of all assets that are pledged as collateral for the payment of the related debt obligation primarily arising from secured borrowings, repurchase agreements or other current or potential obligations, where the secured party does not have the right by contract or custom to sell or re-pledge the collateral and therefore are not reclassified and separately reported in the statement of financial position. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 50 -Paragraph 1A -Subparagraph (b)(1)(i) -URI http://asc.fasb.org/extlink&oid=109249958&loc=SL6224234-111729 + Details
Name: | us-gaap_PledgedAssetsNotSeparatelyReportedOnStatementOfFinancialPosition
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The sum of the carrying amounts, as of the date of the latest financial statement presented, of loans receivable which are owned but transferred to serve as collateral for the payment of related debt obligations, primarily secured borrowings and repurchase agreements, and for which the transferees are not permitted to sell or re-pledge them to an unrelated party. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 50 -Paragraph 1A -Subparagraph (b)(1)(i) -URI http://asc.fasb.org/extlink&oid=109249958&loc=SL6224234-111729 + Details
Name: | us-gaap_PledgedFinancialInstrumentsNotSeparatelyReportedLoansReceivablePledgedAsCollateral
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Sum of the carrying amounts as of the date of the latest financial statement presented of securities which are owned but transferred to another party to serve as collateral to partially or fully secure a debt obligation, repurchase agreement or other current or potential obligation, and for which the transferee is not permitted to sell or re-pledge them to an unrelated party. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 50 -Paragraph 1A -Subparagraph (b)(1)(i) -URI http://asc.fasb.org/extlink&oid=109249958&loc=SL6224234-111729 + Details
Name: | us-gaap_PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesPledged
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_InformationByCategoryOfDebtSecurityAxis=us-gaap_AvailableforsaleSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InformationByCategoryOfDebtSecurityAxis=us-gaap_HeldtomaturitySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_DepositsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_RepurchaseAgreementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_FederalHomeLoanBankAdvancesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=aub_FederalFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_DerivativeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=aub_OtherPurposeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |