XML 94 R77.htm IDEA: XBRL DOCUMENT
v3.22.4

DEPOSITS (Narrative) (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Cash and Cash Equivalents [Line Items] |  |
Time deposits held in Certificates of Deposit | $ 1,808,498 |
Deposit overdrafts as other commercial/consumer loans | 1,900 | $ 2,000
CDARS |  |
Cash and Cash Equivalents [Line Items] |  |
Time deposits held in Certificates of Deposit | $ 15,500 | $ 20,700

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

X
- Definition Amount of time deposit liabilities, including certificates of deposit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 405 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=116652737&loc=d3e64164-112818 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.12) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 + Details
Name: | us-gaap_TimeDeposits
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_CashAndCashEquivalentsAxis=aub_CdarsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |