$AUB
Atlantic Union Bankshares Corp Stock $aub

$aub Overview Financials Valuation SEC Filings Company Website

2018 Q4 Form 10-K Financial Statement

#000155837020001345 Filed on February 25, 2020

Income Statement

Concept	2018 Q4	2017 Q4	2017
Revenue			$329.0M
YoY Change			12.02%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$6.600M	$6.400M	$11.18M
YoY Change	3.13%	6.67%	9.48%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense			$50.04M
YoY Change			68.08%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$53.30M	$27.00M	$105.0M
YoY Change	97.41%	2.66%	3.07%
Income Tax	$9.000M	$5.600M	$32.79M
% Of Pretax Income	16.89%	20.74%	31.24%
Net Earnings	$44.10M	$15.20M	$72.92M
YoY Change	190.13%	-26.92%	-5.88%
Net Earnings / Revenue			22.16%
Basic Earnings Per Share			$1.67
Diluted Earnings Per Share	$668.2K	$347.0K	$1.67
COMMON SHARES
Basic Shares Outstanding	65.98M shares	43.73M shares	43.70M
Diluted Shares Outstanding			43.78M

Balance Sheet

Concept	2018 Q4	2017 Q4	2017
SHORT-TERM ASSETS
Cash & Short-Term Investments		$199.4M
YoY Change
Cash & Equivalents	$261.2M	$199.4M
Short-Term Investments		$0.00
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$147.0M	$119.6M	$120.0M
YoY Change	22.88%	-1.99%	-1.64%
Goodwill	$727.2M	$298.5M
YoY Change	143.58%	0.11%
Intangibles	$48.69M	$14.80M
YoY Change	228.89%	-28.15%
Long-Term Investments
YoY Change
Other Assets	$1.000M
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$13.77B	$9.315B	$9.315B
YoY Change	47.78%	10.54%	10.54%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$1.088B	$794.2M	$49.00M
YoY Change	36.98%	37.69%	-16.95%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$44.00M	$49.00M	$49.00M
YoY Change	-10.2%	-16.95%	-16.95%
LONG-TERM LIABILITIES
Long-Term Debt	$668.0M	$425.0M	$425.0M
YoY Change	57.18%	2.91%	2.91%
Other Long-Term Liabilities	$114.0M	$58.00M	$58.00M
YoY Change	96.55%	3.57%	3.57%
Total Long-Term Liabilities	$782.0M	$483.0M	$483.0M
YoY Change	61.9%	2.99%	2.99%
TOTAL LIABILITIES
Total Short-Term Liabilities	$44.00M	$49.00M	$49.00M
Total Long-Term Liabilities	$782.0M	$483.0M	$483.0M
Total Liabilities	$11.84B	$8.269B	$8.269B
YoY Change	43.2%	11.35%	11.35%
SHAREHOLDERS EQUITY
Retained Earnings	$467.3M	$379.5M
YoY Change	23.16%	10.98%
Common Stock	$87.25M	$57.74M
YoY Change	51.1%	0.41%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.925B	$1.046B	$1.046B
YoY Change
Total Liabilities & Shareholders Equity	$13.77B	$9.315B	$9.315B
YoY Change	47.78%	10.54%	10.54%

Cashflow Statement

Concept	2018 Q4	2017 Q4	2017
OPERATING ACTIVITIES
Net Income	$44.10M	$15.20M	$72.92M
YoY Change	190.13%	-26.92%	-5.88%
Depreciation, Depletion And Amortization	$6.600M	$6.400M	$11.18M
YoY Change	3.13%	6.67%	9.48%
Cash From Operating Activities	$70.20M	$14.90M	$110.3M
YoY Change	371.14%	-32.58%	17.57%
INVESTING ACTIVITIES
Capital Expenditures		-$2.200M	-$9.300M
YoY Change		83.33%	47.62%
Acquisitions
YoY Change
Other Investing Activities	-$417.5M	-$252.7M	$0.00
YoY Change	65.22%	44.57%
Cash From Investing Activities	-$413.2M	-$254.8M	-$885.8M
YoY Change	62.17%	44.77%	23.86%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net			-$1.037M
YoY Change			-103.27%
Debt Paid & Issued, Net			$10.00M
YoY Change			-82.61%
Cash From Financing Activities	322.1M	262.3M	795.6M
YoY Change	22.8%	48.28%	20.93%
NET CHANGE
Cash From Operating Activities	70.20M	14.90M	110.3M
Cash From Investing Activities	-413.2M	-254.8M	-885.8M
Cash From Financing Activities	322.1M	262.3M	795.6M
Net Change In Cash	-20.90M	22.40M	20.14M
YoY Change	-193.3%	-2.61%	-44.95%
FREE CASH FLOW
Cash From Operating Activities	$70.20M	$14.90M	$110.3M
Capital Expenditures		-$2.200M	-$9.300M
Free Cash Flow		$17.10M	$119.6M
YoY Change		-26.61%	19.46%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value
CY2019	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2019	dei	Entity Central Index Key EntityCentralIndexKey	0000883948
CY2019	dei	Amendment Flag AmendmentFlag	false
CY2019	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
CY2019	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2019	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2019Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2018Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2019	aub	Specified Consecutive Period Of Payment Of Contractual Amounts As Indicator To Determine Future Payments SpecifiedConsecutivePeriodOfPaymentOfContractualAmountsAsIndicatorToDetermineFuturePayments	P6M
CY2019	aub	Restricted Stock Vesting Percentage RestrictedStockVestingPercentage	0.3333
CY2019	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	VA
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CY2018Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	65977149
CY2019	dei	Document Type DocumentType	10-K
CY2019	dei	Document Annual Report DocumentAnnualReport	true
CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-12-31
CY2019	dei	Document Transition Report DocumentTransitionReport	false
CY2019	dei	Entity File Number EntityFileNumber	0-20293
CY2019	dei	Entity Registrant Name EntityRegistrantName	ATLANTIC UNION BANKSHARES CORPORATION
CY2019	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	54-1598552
CY2019	dei	Entity Address Address Line1 EntityAddressAddressLine1	1051 East Cary Street
CY2019	dei	Entity Address Address Line2 EntityAddressAddressLine2	Suite 1200
CY2019	dei	Entity Address City Or Town EntityAddressCityOrTown	Richmond
CY2019	dei	Entity Address State Or Province EntityAddressStateOrProvince	VA
CY2019	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	23219
CY2019	dei	City Area Code CityAreaCode	804
CY2019	dei	Local Phone Number LocalPhoneNumber	633-5031
CY2019	dei	Security12b Title Security12bTitle	Common Stock, par value $1.33 per share
CY2019	dei	Trading Symbol TradingSymbol	AUB
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CY2019	us-gaap	Noninterest Expense NoninterestExpense	418340000
CY2018	us-gaap	Noninterest Expense NoninterestExpense	337767000
CY2017	us-gaap	Noninterest Expense NoninterestExpense	225668000
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	231255000
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	179429000
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	104966000
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	37557000
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	30016000
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	32790000
CY2019	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	193698000
CY2018	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	149413000
CY2017	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	72176000
CY2019	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax	-230000
CY2018	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax	-4280000
CY2017	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax	1344000
CY2019	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	-60000
CY2018	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	-1115000
CY2017	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	597000
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-170000
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-3165000
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	747000
CY2019	us-gaap	Net Income Loss NetIncomeLoss	193528000
CY2018	us-gaap	Net Income Loss NetIncomeLoss	146248000
CY2017	us-gaap	Net Income Loss NetIncomeLoss	72923000
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.41
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.22
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.67
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.41
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.22
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.67
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.96
CY2018	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.88
CY2017	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.81
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	80200950
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	65859165
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	43698897
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	80263557
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	65908573
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	43779744
CY2019	us-gaap	Net Income Loss NetIncomeLoss	193528000
CY2018	us-gaap	Net Income Loss NetIncomeLoss	146248000
CY2017	us-gaap	Net Income Loss NetIncomeLoss	72923000
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-5103000
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	1087000
CY2017	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-44000
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	-2051000
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	-259000
CY2017	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	-464000
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-7714000
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-975000
CY2017	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-862000
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	13262000
CY2018	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-2847000
CY2017	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	1580000
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	49890000
CY2018	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-10711000
CY2017	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	2936000
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	1611000
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	95000
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	280000
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	6064000
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	362000
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	520000
CY2019	aub	Other Comprehensive Income Accretion On Unrealized Gain Loss For Available For Sale Securities Transferred To Held To Maturity Tax OtherComprehensiveIncomeAccretionOnUnrealizedGainLossForAvailableForSaleSecuritiesTransferredToHeldToMaturityTax	5000
CY2018	aub	Other Comprehensive Income Accretion On Unrealized Gain Loss For Available For Sale Securities Transferred To Held To Maturity Tax OtherComprehensiveIncomeAccretionOnUnrealizedGainLossForAvailableForSaleSecuritiesTransferredToHeldToMaturityTax	109000
CY2017	aub	Other Comprehensive Income Accretion On Unrealized Gain Loss For Available For Sale Securities Transferred To Held To Maturity Tax OtherComprehensiveIncomeAccretionOnUnrealizedGainLossForAvailableForSaleSecuritiesTransferredToHeldToMaturityTax	362000
CY2019	aub	Other Comprehensive Income Accretion On Unrealized Gain Loss For Available For Sale Securities Transferred To Held To Maturity OtherComprehensiveIncomeAccretionOnUnrealizedGainLossForAvailableForSaleSecuritiesTransferredToHeldToMaturity	20000
CY2018	aub	Other Comprehensive Income Accretion On Unrealized Gain Loss For Available For Sale Securities Transferred To Held To Maturity OtherComprehensiveIncomeAccretionOnUnrealizedGainLossForAvailableForSaleSecuritiesTransferredToHeldToMaturity	408000
CY2017	aub	Other Comprehensive Income Accretion On Unrealized Gain Loss For Available For Sale Securities Transferred To Held To Maturity OtherComprehensiveIncomeAccretionOnUnrealizedGainLossForAvailableForSaleSecuritiesTransferredToHeldToMaturity	672000
CY2019	aub	Other Comprehensive Income Unrealized Holding Gain Loss On Bank Owned Life Insurance Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnBankOwnedLifeInsuranceArisingDuringPeriodNetOfTax	-646000
CY2018	aub	Other Comprehensive Income Unrealized Holding Gain Loss On Bank Owned Life Insurance Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnBankOwnedLifeInsuranceArisingDuringPeriodNetOfTax	0
CY2017	aub	Other Comprehensive Income Unrealized Holding Gain Loss On Bank Owned Life Insurance Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnBankOwnedLifeInsuranceArisingDuringPeriodNetOfTax	0
CY2019	aub	Other Comprehensive Income Loss Reclassification Adjustment From Bank Owned Life Insurance During Period Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromBankOwnedLifeInsuranceDuringPeriodBeforeTax	-77000
CY2018	aub	Other Comprehensive Income Loss Reclassification Adjustment From Bank Owned Life Insurance During Period Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromBankOwnedLifeInsuranceDuringPeriodBeforeTax	-76000
CY2017	aub	Other Comprehensive Income Loss Reclassification Adjustment From Bank Owned Life Insurance During Period Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromBankOwnedLifeInsuranceDuringPeriodBeforeTax	-363000
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	45848000
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-9343000
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	2925000
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	239376000
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	136905000
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	75848000
CY2016Q4	us-gaap	Stockholders Equity StockholdersEquity	1001032000
CY2017	us-gaap	Net Income Loss NetIncomeLoss	72923000
CY2017	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	1402000
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	2925000
CY2017	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.81
CY2017	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	35393000
CY2017	us-gaap	Stock Issued During Period Shares Employee Stock Ownership Plan StockIssuedDuringPeriodSharesEmployeeStockOwnershipPlan	63476
CY2017	us-gaap	Stock Issued During Period Value Employee Stock Ownership Plan StockIssuedDuringPeriodValueEmployeeStockOwnershipPlan	1037000
CY2017	us-gaap	Stock Issued During Period Shares Issued For Services StockIssuedDuringPeriodSharesIssuedForServices	20857
CY2017	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	724000
CY2017	us-gaap	Stock Issued During Period Shares Restricted Stock Award Gross StockIssuedDuringPeriodSharesRestrictedStockAwardGross	94370
CY2017	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	-1567000
CY2017	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	4648000
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	1046329000
CY2018	us-gaap	Net Income Loss NetIncomeLoss	146248000
CY2018	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	2792000
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-9343000
CY2018	us-gaap	Stock Issued During Period Shares Acquisitions StockIssuedDuringPeriodSharesAcquisitions	21922077
CY2018	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	794809000
CY2018	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.88
CY2018	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	58001000
CY2018	us-gaap	Stock Issued During Period Shares Employee Stock Ownership Plan StockIssuedDuringPeriodSharesEmployeeStockOwnershipPlan	121438
CY2018	us-gaap	Stock Issued During Period Value Employee Stock Ownership Plan StockIssuedDuringPeriodValueEmployeeStockOwnershipPlan	2347000
CY2018	us-gaap	Stock Issued During Period Shares Issued For Services StockIssuedDuringPeriodSharesIssuedForServices	23581
CY2018	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	914000
CY2018	us-gaap	Stock Issued During Period Shares Restricted Stock Award Gross StockIssuedDuringPeriodSharesRestrictedStockAwardGross	118058
CY2018	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	-2908000
CY2018	aub	Adjustments To Additional Paid In Capital Warrant Canceled AdjustmentsToAdditionalPaidInCapitalWarrantCanceled	-1530000
CY2018	us-gaap	New Accounting Pronouncement Or Change In Accounting Principle Effect Of Adoption Quantification NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification	-416000
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	6132000
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	1924581000
CY2019	us-gaap	Net Income Loss NetIncomeLoss	193528000
CY2019	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	13697000
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	45848000
CY2019	us-gaap	Stock Issued During Period Shares Acquisitions StockIssuedDuringPeriodSharesAcquisitions	15842026
CY2019	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	499974000
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.96
CY2019	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	78345000
CY2019	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	2171944
CY2019	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	80280000
CY2019	us-gaap	Stock Issued During Period Shares Employee Stock Ownership Plan StockIssuedDuringPeriodSharesEmployeeStockOwnershipPlan	78098
CY2019	us-gaap	Stock Issued During Period Value Employee Stock Ownership Plan StockIssuedDuringPeriodValueEmployeeStockOwnershipPlan	1988000
CY2019	us-gaap	Stock Issued During Period Shares Issued For Services StockIssuedDuringPeriodSharesIssuedForServices	25744
CY2019	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	910000
CY2019	us-gaap	Stock Issued During Period Shares Restricted Stock Award Gross StockIssuedDuringPeriodSharesRestrictedStockAwardGross	193884
CY2019	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	-2301000
CY2019	us-gaap	New Accounting Pronouncement Or Change In Accounting Principle Effect Of Adoption Quantification NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification	-1133000
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	8332000
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	2513102000
CY2019	us-gaap	Net Income Loss NetIncomeLoss	193528000
CY2018	us-gaap	Net Income Loss NetIncomeLoss	146248000
CY2017	us-gaap	Net Income Loss NetIncomeLoss	72923000
CY2019	us-gaap	Depreciation Depreciation	15032000
CY2018	us-gaap	Depreciation Depreciation	13725000
CY2017	us-gaap	Depreciation Depreciation	11183000
CY2019	aub	Valuation Expenses Related To Foreclosed Properties And Former Bank Premises ValuationExpensesRelatedToForeclosedPropertiesAndFormerBankPremises	1906000
CY2018	aub	Valuation Expenses Related To Foreclosed Properties And Former Bank Premises ValuationExpensesRelatedToForeclosedPropertiesAndFormerBankPremises	1324000
CY2017	aub	Valuation Expenses Related To Foreclosed Properties And Former Bank Premises ValuationExpensesRelatedToForeclosedPropertiesAndFormerBankPremises	1891000
CY2019	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	24944000
CY2018	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	12603000
CY2017	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	14021000
CY2019	aub	Net Impact Of Amortization And Accretion Related To Acquisition NetImpactOfAmortizationAndAccretionRelatedToAcquisition	-7899000
CY2018	aub	Net Impact Of Amortization And Accretion Related To Acquisition NetImpactOfAmortizationAndAccretionRelatedToAcquisition	-6711000
CY2017	aub	Net Impact Of Amortization And Accretion Related To Acquisition NetImpactOfAmortizationAndAccretionRelatedToAcquisition	-866000
CY2019	aub	Provision For Loan Lease And Other Losses Including Discontinued Operations ProvisionForLoanLeaseAndOtherLossesIncludingDiscontinuedOperations	21092000
CY2018	aub	Provision For Loan Lease And Other Losses Including Discontinued Operations ProvisionForLoanLeaseAndOtherLossesIncludingDiscontinuedOperations	13551000
CY2017	aub	Provision For Loan Lease And Other Losses Including Discontinued Operations ProvisionForLoanLeaseAndOtherLossesIncludingDiscontinuedOperations	10756000
CY2019	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	7675000
CY2018	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	383000
CY2017	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	800000
CY2019	aub	Bank Owned Life Insurance Income Net Of Cash Settlements BankOwnedLifeInsuranceIncomeNetOfCashSettlements	8311000
CY2018	aub	Bank Owned Life Insurance Income Net Of Cash Settlements BankOwnedLifeInsuranceIncomeNetOfCashSettlements	7198000
CY2017	aub	Bank Owned Life Insurance Income Net Of Cash Settlements BankOwnedLifeInsuranceIncomeNetOfCashSettlements	5306000
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	15057000
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	17821000
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	5624000
CY2019	us-gaap	Increase Decrease In Mortgage Loans Held For Sale IncreaseDecreaseInMortgageLoansHeldForSale	34178000
CY2018	us-gaap	Increase Decrease In Mortgage Loans Held For Sale IncreaseDecreaseInMortgageLoansHeldForSale	-40662000
CY2017	us-gaap	Increase Decrease In Mortgage Loans Held For Sale IncreaseDecreaseInMortgageLoansHeldForSale	4175000
CY2019	aub	Gains Losses On Sales Of Other Real Estate Owned GainsLossesOnSalesOfOtherRealEstateOwned	-102000
CY2018	aub	Gains Losses On Sales Of Other Real Estate Owned GainsLossesOnSalesOfOtherRealEstateOwned	220000
CY2017	aub	Gains Losses On Sales Of Other Real Estate Owned GainsLossesOnSalesOfOtherRealEstateOwned	-143000
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-16397000
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0
CY2017	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0
CY2019	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	0
CY2018	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	19966000
CY2017	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	0
CY2019	aub	Goodwill Impairment Loss Including Discontinued Operations GoodwillImpairmentLossIncludingDiscontinuedOperations	0
CY2018	aub	Goodwill Impairment Loss Including Discontinued Operations GoodwillImpairmentLossIncludingDiscontinuedOperations	864000
CY2017	aub	Goodwill Impairment Loss Including Discontinued Operations GoodwillImpairmentLossIncludingDiscontinuedOperations	0
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	8332000
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	6132000
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	4648000
CY2019	us-gaap	Issuance Of Stock And Warrants For Services Or Claims IssuanceOfStockAndWarrantsForServicesOrClaims	910000
CY2018	us-gaap	Issuance Of Stock And Warrants For Services Or Claims IssuanceOfStockAndWarrantsForServicesOrClaims	914000
CY2017	us-gaap	Issuance Of Stock And Warrants For Services Or Claims IssuanceOfStockAndWarrantsForServicesOrClaims	724000
CY2019	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	57348000
CY2018	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	26606000
CY2017	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	5785000
CY2019	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	12910000
CY2018	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	24005000
CY2017	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	5352000
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	194799000
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	216765000
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	110333000
CY2019	aub	Payments To Acquire Available For Sale And Restricted Stock Securities PaymentsToAcquireAvailableForSaleAndRestrictedStockSecurities	444398000
CY2018	aub	Payments To Acquire Available For Sale And Restricted Stock Securities PaymentsToAcquireAvailableForSaleAndRestrictedStockSecurities	1047611000
CY2017	aub	Payments To Acquire Available For Sale And Restricted Stock Securities PaymentsToAcquireAvailableForSaleAndRestrictedStockSecurities	298958000
CY2019	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	47217000
CY2018	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	485629000
CY2017	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	7836000
CY2019	aub	Proceeds From Sale Of Available For Sale Securities And Restricted Stock ProceedsFromSaleOfAvailableForSaleSecuritiesAndRestrictedStock	514070000
CY2018	aub	Proceeds From Sale Of Available For Sale Securities And Restricted Stock ProceedsFromSaleOfAvailableForSaleSecuritiesAndRestrictedStock	515764000
CY2017	aub	Proceeds From Sale Of Available For Sale Securities And Restricted Stock ProceedsFromSaleOfAvailableForSaleSecuritiesAndRestrictedStock	139046000
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	247770000
CY2018	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	173597000
CY2017	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	115124000
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	3142000
CY2018	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	0
CY2017	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	5048000
CY2019	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	0
CY2018	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	28913000
CY2017	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	0
CY2019	us-gaap	Proceeds From Sale Of Loans And Leases Held For Investment ProceedsFromSaleOfLoansAndLeasesHeldForInvestment	0
CY2018	us-gaap	Proceeds From Sale Of Loans And Leases Held For Investment ProceedsFromSaleOfLoansAndLeasesHeldForInvestment	581324000
CY2017	us-gaap	Proceeds From Sale Of Loans And Leases Held For Investment ProceedsFromSaleOfLoansAndLeasesHeldForInvestment	0
CY2019	us-gaap	Payments To Acquire Loans And Leases Held For Investment PaymentsToAcquireLoansAndLeasesHeldForInvestment	741146000
CY2018	us-gaap	Payments To Acquire Loans And Leases Held For Investment PaymentsToAcquireLoansAndLeasesHeldForInvestment	704582000
CY2017	us-gaap	Payments To Acquire Loans And Leases Held For Investment PaymentsToAcquireLoansAndLeasesHeldForInvestment	838668000
CY2019	us-gaap	Payments For Proceeds From Productive Assets PaymentsForProceedsFromProductiveAssets	15892000
CY2018	us-gaap	Payments For Proceeds From Productive Assets PaymentsForProceedsFromProductiveAssets	-1698000
CY2017	us-gaap	Payments For Proceeds From Productive Assets PaymentsForProceedsFromProductiveAssets	9261000
CY2019	aub	Proceeds From Bank Owned Life Insurance Settlements ProceedsFromBankOwnedLifeInsuranceSettlements	0
CY2018	aub	Proceeds From Bank Owned Life Insurance Settlements ProceedsFromBankOwnedLifeInsuranceSettlements	0
CY2017	aub	Proceeds From Bank Owned Life Insurance Settlements ProceedsFromBankOwnedLifeInsuranceSettlements	2497000
CY2019	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	12118000
CY2018	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	6295000
CY2017	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	2448000
CY2019	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	12000
CY2018	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	14304000
CY2017	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	231000
CY2019	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	46164000
CY2018	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	174496000
CY2017	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	5038000
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-425401000
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-770039000
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-885753000
CY2019	us-gaap	Net Change Noninterest Bearing Deposits Domestic NetChangeNoninterestBearingDepositsDomestic	191125000
CY2018	us-gaap	Net Change Noninterest Bearing Deposits Domestic NetChangeNoninterestBearingDepositsDomestic	81028000
CY2017	us-gaap	Net Change Noninterest Bearing Deposits Domestic NetChangeNoninterestBearingDepositsDomestic	105093000
CY2019	us-gaap	Net Change Interest Bearing Deposits Domestic NetChangeInterestBearingDepositsDomestic	916656000
CY2018	us-gaap	Net Change Interest Bearing Deposits Domestic NetChangeInterestBearingDepositsDomestic	351084000
CY2017	us-gaap	Net Change Interest Bearing Deposits Domestic NetChangeInterestBearingDepositsDomestic	502018000
CY2019	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-872229000
CY2018	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	58645000
CY2017	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	217371000
CY2019	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	565000
CY2018	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	565000
CY2017	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	3003000
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	550000000
CY2018	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	225000000
CY2017	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	20000000
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	220614000
CY2018	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	40000000
CY2017	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	10000000
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	78345000
CY2018	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	58001000
CY2017	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	35393000
CY2019	aub	Payments For Cancellation Of Warrants PaymentsForCancellationOfWarrants	0
CY2018	aub	Payments For Cancellation Of Warrants PaymentsForCancellationOfWarrants	1530000
CY2017	aub	Payments For Cancellation Of Warrants PaymentsForCancellationOfWarrants	0
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	80280000
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	1988000
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	2347000
CY2017	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	1037000
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	2301000
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	2908000
CY2017	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1567000
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	405435000
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	615100000
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	795556000
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	174833000
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	61826000
CY2017	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	20136000
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	261199000
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	199373000
CY2016Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	179237000
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	436032000
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	261199000
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	199373000
CY2019	us-gaap	Interest Paid Net InterestPaidNet	159934000
CY2018	us-gaap	Interest Paid Net InterestPaidNet	99227000
CY2017	us-gaap	Interest Paid Net InterestPaidNet	47775000
CY2019	us-gaap	Income Taxes Paid IncomeTaxesPaid	25058000
CY2018	us-gaap	Income Taxes Paid IncomeTaxesPaid	10830000
CY2017	us-gaap	Income Taxes Paid IncomeTaxesPaid	24000000
CY2019	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	1878000
CY2018	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	493000
CY2017	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	910000
CY2019	us-gaap	Noncash Or Part Noncash Divestiture Amount Of Consideration Received1 NoncashOrPartNoncashDivestitureAmountOfConsiderationReceived1	0
CY2018	us-gaap	Noncash Or Part Noncash Divestiture Amount Of Consideration Received1 NoncashOrPartNoncashDivestitureAmountOfConsiderationReceived1	28913000
CY2017	us-gaap	Noncash Or Part Noncash Divestiture Amount Of Consideration Received1 NoncashOrPartNoncashDivestitureAmountOfConsiderationReceived1	0
CY2019	aub	Securities Transfer From Held To Maturity To Available For Sale SecuritiesTransferFromHeldToMaturityToAvailableForSale	0
CY2018	aub	Securities Transfer From Held To Maturity To Available For Sale SecuritiesTransferFromHeldToMaturityToAvailableForSale	187425000
CY2017	aub	Securities Transfer From Held To Maturity To Available For Sale SecuritiesTransferFromHeldToMaturityToAvailableForSale	0
CY2019	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	499974000
CY2018	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	794809000
CY2017	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	0
CY2019	us-gaap	Noncash Or Part Noncash Acquisition Value Of Assets Acquired1 NoncashOrPartNoncashAcquisitionValueOfAssetsAcquired1	2849673000
CY2018	us-gaap	Noncash Or Part Noncash Acquisition Value Of Assets Acquired1 NoncashOrPartNoncashAcquisitionValueOfAssetsAcquired1	3253328000
CY2017	us-gaap	Noncash Or Part Noncash Acquisition Value Of Assets Acquired1 NoncashOrPartNoncashAcquisitionValueOfAssetsAcquired1	293000
CY2019	us-gaap	Noncash Or Part Noncash Acquisition Value Of Liabilities Assumed1 NoncashOrPartNoncashAcquisitionValueOfLiabilitiesAssumed1	2558063000
CY2018	us-gaap	Noncash Or Part Noncash Acquisition Value Of Liabilities Assumed1 NoncashOrPartNoncashAcquisitionValueOfLiabilitiesAssumed1	2873718000
CY2017	us-gaap	Noncash Or Part Noncash Acquisition Value Of Liabilities Assumed1 NoncashOrPartNoncashAcquisitionValueOfLiabilitiesAssumed1	5437000
CY2019	aub	Number Of Bank Branches NumberOfBankBranches	149
CY2019	aub	Number Of Atms NumberOfAtms	170
CY2005Q4	aub	Number Of Business Acquisitions NumberOfBusinessAcquisitions	2
CY2019	us-gaap	Use Of Estimates UseOfEstimates	<p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Use of Estimates</span> - The preparation of the consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from these estimates. Material estimates that are particularly susceptible to significant change in the near term relate to the determination of the ALL, the valuation of goodwill and intangible assets, foreclosed property and former bank premises, deferred tax assets and liabilities, other-than-temporary impairment of securities, and the fair value of financial instruments.</p>
CY2018	aub	Federal Home Loan Bank Requires Bank To Maintain Percentage Of Stock Equal To Outstanding Borrowings FederalHomeLoanBankRequiresBankToMaintainPercentageOfStockEqualToOutstandingBorrowings	0.0425
CY2019	aub	Federal Home Loan Bank Requires Bank To Maintain Percentage Of Stock Equal To Outstanding Borrowings FederalHomeLoanBankRequiresBankToMaintainPercentageOfStockEqualToOutstandingBorrowings	0.0425
CY2018	aub	Required Percentage Of Common Stock Investment Percentage To Outstanding Capital RequiredPercentageOfCommonStockInvestmentPercentageToOutstandingCapital	0.06
CY2019	aub	Required Percentage Of Common Stock Investment Percentage To Outstanding Capital RequiredPercentageOfCommonStockInvestmentPercentageToOutstandingCapital	0.06
CY2019	aub	Period Past Due To Consider For Placing Commercial Loans On Nonaccrual Status PeriodPastDueToConsiderForPlacingCommercialLoansOnNonaccrualStatus	P90D
CY2019	aub	Number Of Days Past Due To Charge Off Real Estate Secured Loans NumberOfDaysPastDueToChargeOffRealEstateSecuredLoans	P180D
CY2019	aub	Period Of Independent Appraisal Or Valuation PeriodOfIndependentAppraisalOrValuation	P12M
CY2019Q4	us-gaap	Goodwill Goodwill	935600000
CY2019Q2	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0
CY2019Q4	us-gaap	Other Postretirement Benefits Payable Current And Noncurrent OtherPostretirementBenefitsPayableCurrentAndNoncurrent	12100000
CY2018Q4	us-gaap	Other Postretirement Benefits Payable Current And Noncurrent OtherPostretirementBenefitsPayableCurrentAndNoncurrent	10500000
CY2019	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	1900000
CY2018	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	922000
CY2019	us-gaap	Affordable Housing Tax Credits And Other Tax Benefits Amount AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount	2900000
CY2018	us-gaap	Affordable Housing Tax Credits And Other Tax Benefits Amount AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount	1100000
CY2017	aub	Net Impact Of Loans Accretion Related To Acquisition NetImpactOfLoansAccretionRelatedToAcquisition	6784000
CY2019Q4	us-gaap	Amortization Method Qualified Affordable Housing Project Investments AmortizationMethodQualifiedAffordableHousingProjectInvestments	29600000
CY2018Q4	us-gaap	Amortization Method Qualified Affordable Housing Project Investments AmortizationMethodQualifiedAffordableHousingProjectInvestments	10800000
CY2019Q4	us-gaap	Affordable Housing Program Obligation AffordableHousingProgramObligation	12000000.0
CY2018Q4	us-gaap	Affordable Housing Program Obligation AffordableHousingProgramObligation	9900000
CY2018Q4	us-gaap	Liability For Uncertain Tax Positions Current LiabilityForUncertainTaxPositionsCurrent	0
CY2019Q4	us-gaap	Liability For Uncertain Tax Positions Current LiabilityForUncertainTaxPositionsCurrent	0
CY2019	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Concentrations of Credit Risk</span> - Most of the Company’s activities are with customers located in the Commonwealth of Virginia. Securities AFS, loans, and financial instruments with off balance sheet risk also represent concentrations of credit risk and are discussed in Note 3 “Securities,” Note 4 “Loans and Allowance for Loan Losses,” and Note 12 “Stockholders’ Equity,” respectively.</p>
CY2019	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Reclassifications</span> – The accompanying consolidated financial statements and notes reflect certain reclassifications in prior periods to conform to the current presentation. Specifically, the Company reclassified Communication Expense from being separately presented to being contained within Other Expenses on the Consolidated Statements of Income. In addition, the Company reclassified loans from Residential 1-4 Family – Commercial to Residential 1-4 – Consumer based on a more accurate way to determine the segmentation of mortgage loans.</p>
CY2019	aub	Net Impact Of Loans Accretion Related To Acquisition NetImpactOfLoansAccretionRelatedToAcquisition	24846000
CY2018	aub	Net Impact Of Loans Accretion Related To Acquisition NetImpactOfLoansAccretionRelatedToAcquisition	17145000
CY2019	aub	Net Impact Of Building Amortization Related To Acquisition NetImpactOfBuildingAmortizationRelatedToAcquisition	-50000
CY2018	aub	Net Impact Of Building Amortization Related To Acquisition NetImpactOfBuildingAmortizationRelatedToAcquisition	-228000
CY2017	aub	Net Impact Of Building Amortization Related To Acquisition NetImpactOfBuildingAmortizationRelatedToAcquisition	0
CY2019	aub	Net Impact Of Core Deposit Intangible Amortization Related To Acquisition NetImpactOfCoreDepositIntangibleAmortizationRelatedToAcquisition	16755000
CY2018	aub	Net Impact Of Core Deposit Intangible Amortization Related To Acquisition NetImpactOfCoreDepositIntangibleAmortizationRelatedToAcquisition	11464000
CY2017	aub	Net Impact Of Core Deposit Intangible Amortization Related To Acquisition NetImpactOfCoreDepositIntangibleAmortizationRelatedToAcquisition	5603000
CY2019	aub	Net Impact Of Amortization Of Other Intangibles Related To Acquisition NetImpactOfAmortizationOfOtherIntangiblesRelatedToAcquisition	1766000
CY2018	aub	Net Impact Of Amortization Of Other Intangibles Related To Acquisition NetImpactOfAmortizationOfOtherIntangiblesRelatedToAcquisition	1375000
CY2017	aub	Net Impact Of Amortization Of Other Intangibles Related To Acquisition NetImpactOfAmortizationOfOtherIntangiblesRelatedToAcquisition	485000
CY2019	aub	Net Impact Of Borrowings Accretion Related To Acquisition NetImpactOfBorrowingsAccretionRelatedToAcquisition	-360000
CY2018	aub	Net Impact Of Borrowings Accretion Related To Acquisition NetImpactOfBorrowingsAccretionRelatedToAcquisition	-506000
CY2017	aub	Net Impact Of Borrowings Accretion Related To Acquisition NetImpactOfBorrowingsAccretionRelatedToAcquisition	170000
CY2019	aub	Net Impact Of Time Deposits Accretion Related To Acquisition NetImpactOfTimeDepositsAccretionRelatedToAcquisition	833000
CY2018	aub	Net Impact Of Time Deposits Accretion Related To Acquisition NetImpactOfTimeDepositsAccretionRelatedToAcquisition	2553000
CY2017	aub	Net Impact Of Time Deposits Accretion Related To Acquisition NetImpactOfTimeDepositsAccretionRelatedToAcquisition	0
CY2019	aub	Net Impact Of Leases Amortization Related To Acquisition NetImpactOfLeasesAmortizationRelatedToAcquisition	1051000
CY2018	aub	Net Impact Of Leases Amortization Related To Acquisition NetImpactOfLeasesAmortizationRelatedToAcquisition	130000
CY2017	aub	Net Impact Of Leases Amortization Related To Acquisition NetImpactOfLeasesAmortizationRelatedToAcquisition	0
CY2019	aub	Net Impact Of Amortization And Accretion Related To Acquisition NetImpactOfAmortizationAndAccretionRelatedToAcquisition	-7899000
CY2018	aub	Net Impact Of Amortization And Accretion Related To Acquisition NetImpactOfAmortizationAndAccretionRelatedToAcquisition	-6711000
CY2017	aub	Net Impact Of Amortization And Accretion Related To Acquisition NetImpactOfAmortizationAndAccretionRelatedToAcquisition	-866000
CY2019Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1893427000
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	53918000
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	1900000
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1945445000
CY2018Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1780952000
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	9414000
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	15545000
CY2018Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1774821000
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	198348000
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	1204000
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	75035000
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	696000
CY2019Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	273383000
CY2019Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	1900000
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	475029000
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	5361000
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	385433000
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	10184000
CY2018Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	860462000
CY2018Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	15545000
CY2019Q4	aub	Debt Securities Available For Sale Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	75000000.0
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	696000
CY2018Q4	aub	Debt Securities Available For Sale Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	385400000
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	10200000
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	35046000
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	35197000
CY2018Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	22653000
CY2018Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	22789000
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	164605000
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	166873000
CY2018Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	191003000
CY2018Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	188999000
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	249712000
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	254790000
CY2018Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	218211000
CY2018Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	217304000
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	1444064000
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	1488585000
CY2018Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	1349085000
CY2018Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	1345729000
CY2019Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1893427000
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1945445000
CY2018Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1780952000
CY2018Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1774821000
CY2019Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	555144000
CY2019Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	48359000
CY2019Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	0
CY2019Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	603503000
CY2019Q4	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount	502000
CY2019Q4	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Fair Value HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue	504000
CY2018Q4	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount	0
CY2018Q4	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Fair Value HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue	0
CY2019Q4	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount	10258000
CY2019Q4	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	10539000
CY2018Q4	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount	3893000
CY2018Q4	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	3900000
CY2019Q4	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount	1768000
CY2019Q4	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	1800000
CY2018Q4	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount	3480000
CY2018Q4	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	3507000
CY2019Q4	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount	542616000
CY2019Q4	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue	590660000
CY2018Q4	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount	484899000
CY2018Q4	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue	492094000
CY2019Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	555144000
CY2019Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	603503000
CY2018Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	492272000
CY2018Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	499501000
CY2018	aub	Federal Home Loan Bank Requires Bank To Maintain Percentage Of Stock Equal To Outstanding Borrowings FederalHomeLoanBankRequiresBankToMaintainPercentageOfStockEqualToOutstandingBorrowings	0.0425
CY2019	aub	Federal Home Loan Bank Requires Bank To Maintain Percentage Of Stock Equal To Outstanding Borrowings FederalHomeLoanBankRequiresBankToMaintainPercentageOfStockEqualToOutstandingBorrowings	0.0425
CY2018	aub	Required Percentage Of Common Stock Investment Percentage To Outstanding Capital RequiredPercentageOfCommonStockInvestmentPercentageToOutstandingCapital	0.06
CY2019	aub	Required Percentage Of Common Stock Investment Percentage To Outstanding Capital RequiredPercentageOfCommonStockInvestmentPercentageToOutstandingCapital	0.06
CY2019Q4	us-gaap	Federal Reserve Bank Stock FederalReserveBankStock	67000000.0
CY2018Q4	us-gaap	Federal Reserve Bank Stock FederalReserveBankStock	52600000
CY2019Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	63900000
CY2018Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	72000000.0
CY2018	us-gaap	Other Than Temporary Impairment Loss Debt Securities Available For Sale Recognized In Earnings OtherThanTemporaryImpairmentLossDebtSecuritiesAvailableForSaleRecognizedInEarnings	0
CY2019	us-gaap	Other Than Temporary Impairment Loss Debt Securities Available For Sale Recognized In Earnings OtherThanTemporaryImpairmentLossDebtSecuritiesAvailableForSaleRecognizedInEarnings	0
CY2019	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	9530000
CY2018	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	4221000
CY2017	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	1170000
CY2019	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	1855000
CY2018	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	3838000
CY2017	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	370000
CY2019	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	7675000
CY2018	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	383000
CY2017	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	800000
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	514070000
CY2018	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	515764000
CY2017	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	139046000
CY2019Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	12610936000
CY2018Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	9716207000
CY2019Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	13396000
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	28232000
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	12419378000
CY2019Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	12610936000
CY2018Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	8856000
CY2018Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	26953000
CY2018Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	9537156000
CY2018Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	9716207000
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	28200000
CY2018Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	27000000.0
CY2017Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	21700000
CY2019	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	1800000
CY2018	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	2300000
CY2017	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	698000
CY2019Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	35185000
CY2019Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance	38655000
CY2018Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	42991000
CY2018Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance	46890000
CY2019Q4	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	23938000
CY2019Q4	us-gaap	Impaired Financing Receivable With Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance	25738000
CY2019Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	3027000
CY2018Q4	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	16237000
CY2018Q4	us-gaap	Impaired Financing Receivable With Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance	17662000
CY2018Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	2217000
CY2019Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	59123000
CY2019Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	64393000
CY2019Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	3027000
CY2018Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	59228000
CY2018Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	64552000
CY2018Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	2217000
CY2019	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	62158000
CY2019	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	1425000
CY2018	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	63077000
CY2018	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	1702000
CY2017	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	54233000
CY2017	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	1693000
CY2019Q4	aub	Financing Receivable Modifications Number Of Contracts At End Of Period FinancingReceivableModificationsNumberOfContractsAtEndOfPeriod	120
CY2019Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	19496000
CY2019Q4	aub	Financing Receivable Modifications Outstanding Commitment FinancingReceivableModificationsOutstandingCommitment	26000
CY2018Q4	aub	Financing Receivable Modifications Number Of Contracts At End Of Period FinancingReceivableModificationsNumberOfContractsAtEndOfPeriod	114
CY2018Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	26598000
CY2018Q4	aub	Financing Receivable Modifications Outstanding Commitment FinancingReceivableModificationsOutstandingCommitment	0
CY2019	aub	Period For Restructured Loan To Be Considered Default PeriodForRestructuredLoanToBeConsideredDefault	P90D
CY2019	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	38
CY2019	aub	Financing Receivable New Modifications Recorded Investment FinancingReceivableNewModificationsRecordedInvestment	5016000
CY2018	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	47
CY2018	aub	Financing Receivable New Modifications Recorded Investment FinancingReceivableNewModificationsRecordedInvestment	14502000
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	41045000
CY2019	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	7232000
CY2019	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	28108000
CY2019	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	22125000
CY2018	aub	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Measurement Period Adjustment CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldMeasurementPeriodAdjustment	3974000
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	42294000
CY2017Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	38208000
CY2018	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	5168000
CY2018	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	16230000
CY2018	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	13899000
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	41045000
CY2016Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	37192000
CY2017	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	3255000
CY2017	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	13310000
CY2017	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	11071000
CY2017Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	38208000
CY2019Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	59123000
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	3027000
CY2019Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	12465132000
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	39050000
CY2019Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	12610936000
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	42294000
CY2018Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	59228000
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	2217000
CY2018Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	9566758000
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	38828000
CY2018Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	9716207000
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	41045000
CY2018Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	31201000
CY2017Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	14563000
CY2019	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Additions CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAdditions	5060000
CY2018	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Additions CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAdditions	12225000
CY2019	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Accretion CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion	13432000
CY2018	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Accretion CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion	8654000
CY2019	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Reclassifications From Nonaccretable Difference CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldReclassificationsFromNonaccretableDifference	4485000
CY2018	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Reclassifications From Nonaccretable Difference CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldReclassificationsFromNonaccretableDifference	1876000
CY2019	aub	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Measurement Period Adjustment CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldMeasurementPeriodAdjustment	631000
CY2019	aub	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Other Net CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldOtherNet	-3329000
CY2018	aub	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Other Net CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldOtherNet	-7217000
CY2019Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	31274000
CY2018Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	31201000
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	263382000
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	240519000
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	102309000
CY2018Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	93552000
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	161073000
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	146967000
CY2019	aub	Depreciation Adjusted For Discontinued Operations DepreciationAdjustedForDiscontinuedOperations	15000000.0
CY2018	aub	Depreciation Adjusted For Discontinued Operations DepreciationAdjustedForDiscontinuedOperations	13600000
CY2017	aub	Depreciation Adjusted For Discontinued Operations DepreciationAdjustedForDiscontinuedOperations	10900000
CY2019Q2	us-gaap	Goodwill Written Off Related To Sale Of Business Unit GoodwillWrittenOffRelatedToSaleOfBusinessUnit	0
CY2018Q2	us-gaap	Goodwill Written Off Related To Sale Of Business Unit GoodwillWrittenOffRelatedToSaleOfBusinessUnit	864000
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	16483000
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	13874000
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	11490000
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	9687000
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	7819000
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	14316000
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	73669000
CY2019Q4	aub	Lessee Operating Lease Number Of Leases LesseeOperatingLeaseNumberOfLeases	160
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	54900000
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	66100000
CY2019	us-gaap	Operating Lease Expense OperatingLeaseExpense	11500000
CY2019Q4	aub	Lessee Operating Lease Lease Not Yet Commenced Amount LesseeOperatingLeaseLeaseNotYetCommencedAmount	0
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	13046000
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	11321000
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	10344000
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	9377000
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	8065000
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	21025000
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	73178000
CY2019Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	7126000
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	66052000
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y4M9D
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0269
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	13697000
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	8065000
CY2019Q4	us-gaap	Deposits Negotiable Order Of Withdrawal Now DepositsNegotiableOrderOfWithdrawalNOW	2905714000
CY2018Q4	us-gaap	Deposits Negotiable Order Of Withdrawal Now DepositsNegotiableOrderOfWithdrawalNOW	2288523000
CY2019Q4	us-gaap	Deposits Money Market Deposits DepositsMoneyMarketDeposits	3951856000
CY2018Q4	us-gaap	Deposits Money Market Deposits DepositsMoneyMarketDeposits	2875301000
CY2019Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	727847000
CY2018Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	622823000
CY2019Q4	aub	Time Deposits Of250000 And Over TimeDepositsOf250000AndOver	684797000
CY2018Q4	aub	Time Deposits Of250000 And Over TimeDepositsOf250000AndOver	292224000
CY2019Q4	aub	Time Deposits Less Than250000 TimeDepositsLessThan250000	2064628000
CY2018Q4	aub	Time Deposits Less Than250000 TimeDepositsLessThan250000	1797482000
CY2019Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	10334842000
CY2018Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	7876353000
CY2018Q4	us-gaap	Other Short Term Borrowings OtherShortTermBorrowings	5000000
CY2019Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	436253000
CY2018Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	1087797000
CY2019	us-gaap	Shortterm Debt Average Outstanding Amount ShorttermDebtAverageOutstandingAmount	673116000
CY2018	us-gaap	Shortterm Debt Average Outstanding Amount ShorttermDebtAverageOutstandingAmount	968014000
CY2019	us-gaap	Debt Instrument Interest Rate During Period DebtInstrumentInterestRateDuringPeriod	0.0230
CY2018	us-gaap	Debt Instrument Interest Rate During Period DebtInstrumentInterestRateDuringPeriod	0.0191
CY2019Q4	us-gaap	Debt Instrument Interest Rate Effective Percentage DebtInstrumentInterestRateEffectivePercentage	0.0152
CY2018Q4	us-gaap	Debt Instrument Interest Rate Effective Percentage DebtInstrumentInterestRateEffectivePercentage	0.0243
CY2019Q4	us-gaap	Time Deposit Maturities Year One TimeDepositMaturitiesYearOne	1626492000
CY2019Q4	us-gaap	Time Deposit Maturities Year Two TimeDepositMaturitiesYearTwo	621567000
CY2019Q4	us-gaap	Time Deposit Maturities Year Three TimeDepositMaturitiesYearThree	199507000
CY2019Q4	us-gaap	Time Deposit Maturities Year Four TimeDepositMaturitiesYearFour	140722000
CY2019Q4	us-gaap	Time Deposit Maturities Year Five TimeDepositMaturitiesYearFive	160465000
CY2019Q4	us-gaap	Time Deposit Maturities After Year Five TimeDepositMaturitiesAfterYearFive	672000
CY2019Q4	us-gaap	Time Deposits TimeDeposits	2749425000
CY2019Q4	aub	Deposit Overdraft DepositOverdraft	2600000
CY2018Q4	aub	Deposit Overdraft DepositOverdraft	2000000.0
CY2019Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	66053000
CY2018Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	39197000
CY2019Q4	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	370200000
CY2018Q4	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	1043600000
CY2019Q4	us-gaap	Other Short Term Borrowings OtherShortTermBorrowings	0
CY2019Q4	aub	Federal Funds Lines Available Balance FederalFundsLinesAvailableBalance	682000000.0
CY2018Q4	aub	Federal Funds Lines Available Balance FederalFundsLinesAvailableBalance	382000000.0
CY2018Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	25000000.0
CY2019Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	25000000.0
CY2019Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Maximum Amount Available FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresMaximumAmountAvailable	5200000000
CY2018Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Maximum Amount Available FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresMaximumAmountAvailable	4000000000.0
CY2016Q4	us-gaap	Subordinated Long Term Debt SubordinatedLongTermDebt	150000000.0
CY2018Q4	us-gaap	Subordinated Long Term Debt SubordinatedLongTermDebt	158500000
CY2019Q4	us-gaap	Subordinated Long Term Debt SubordinatedLongTermDebt	158500000
CY2012Q3	us-gaap	Prepayment Fees On Advances Net PrepaymentFeesOnAdvancesNet	19600000
CY2019Q3	aub	Debt Instrument Unamortized Prepayment Penalty DebtInstrumentUnamortizedPrepaymentPenalty	7400000
CY2019Q4	us-gaap	Federal Home Loan Bank Advances Long Term FederalHomeLoanBankAdvancesLongTerm	780000000
CY2018Q4	us-gaap	Federal Home Loan Bank Advances Long Term FederalHomeLoanBankAdvancesLongTerm	385000000
CY2019Q4	aub	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months Fair Value Discount Premium LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonthsFairValueDiscountPremium	834000
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	29166000
CY2019Q4	aub	Long Term Debt Maturities Repayments Of Principal In Year Two Fair Value Discount Premium LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwoFairValueDiscountPremium	1008000
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	-1008000
CY2019Q4	aub	Long Term Debt Maturities Repayments Of Principal In Year Three Fair Value Discount Premium LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThreeFairValueDiscountPremium	1030000
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	-1030000
CY2019Q4	aub	Long Term Debt Maturities Repayments Of Principal In Year Four Fair Value Discount Premium LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFourFairValueDiscountPremium	1053000
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	-1053000
CY2019Q4	aub	Long Term Debt Maturities Repayments Of Principal In Year Five Fair Value Discount Premium LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFiveFairValueDiscountPremium	1078000
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	198922000
CY2019Q4	aub	Long Term Debt Maturities Repayments Of Principal After Year Five Fair Value Discount Premium LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFiveFairValueDiscountPremium	11161000
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	852498000
CY2019Q4	us-gaap	Debt Instrument Unamortized Discount Premium Net DebtInstrumentUnamortizedDiscountPremiumNet	16164000
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	1077495000
CY2019Q4	us-gaap	Fair Value Disclosure Offbalance Sheet Risks Amount Liability FairValueDisclosureOffbalanceSheetRisksAmountLiability	4900930000
CY2018Q4	us-gaap	Fair Value Disclosure Offbalance Sheet Risks Amount Liability FairValueDisclosureOffbalanceSheetRisksAmountLiability	3334682000
CY2019Q4	aub	Daily Average Required Reserves Against Deposits DailyAverageRequiredReservesAgainstDeposits	6300000
CY2018Q4	aub	Daily Average Required Reserves Against Deposits DailyAverageRequiredReservesAgainstDeposits	58000000.0
CY2019Q4	aub	Deposits With Other Financial Institutions DepositsWithOtherFinancialInstitutions	131400000
CY2019Q4	us-gaap	Cash Uninsured Amount CashUninsuredAmount	11600000
CY2018Q4	us-gaap	Cash Uninsured Amount CashUninsuredAmount	3700000
CY2019Q4	aub	Cash Pledged As Collateral CashPledgedAsCollateral	116839000
CY2019Q4	us-gaap	Pledged Financial Instruments Not Separately Reported Loans Receivable Pledged As Collateral PledgedFinancialInstrumentsNotSeparatelyReportedLoansReceivablePledgedAsCollateral	4139672000
CY2019Q4	us-gaap	Pledged Assets Not Separately Reported On Statement Of Financial Position PledgedAssetsNotSeparatelyReportedOnStatementOfFinancialPosition	5300858000
CY2018Q4	aub	Cash Pledged As Collateral CashPledgedAsCollateral	13509000
CY2018Q4	us-gaap	Pledged Financial Instruments Not Separately Reported Loans Receivable Pledged As Collateral PledgedFinancialInstrumentsNotSeparatelyReportedLoansReceivablePledgedAsCollateral	3337289000
CY2018Q4	us-gaap	Pledged Assets Not Separately Reported On Statement Of Financial Position PledgedAssetsNotSeparatelyReportedOnStatementOfFinancialPosition	3732286000
CY2019Q4	us-gaap	Closed Portfolio And Beneficial Interest Last Of Layer Amortized Cost ClosedPortfolioAndBeneficialInterestLastOfLayerAmortizedCost	207000000
CY2018Q4	us-gaap	Closed Portfolio And Beneficial Interest Last Of Layer Amortized Cost ClosedPortfolioAndBeneficialInterestLastOfLayerAmortizedCost	224000000
CY2018Q4	us-gaap	Hedged Asset Fair Value Hedge HedgedAssetFairValueHedge	50000000
CY2019Q4	us-gaap	Hedged Asset Fair Value Hedge HedgedAssetFairValueHedge	50000000
CY2019Q4	us-gaap	Common Equity Tier One Capital CommonEquityTierOneCapital	1437908000
CY2019Q4	aub	Common Equity Tier One Capital To Risk Weighted Assets CommonEquityTierOneCapitalToRiskWeightedAssets	0.1024
CY2019Q4	us-gaap	Common Equity Tier One Capital Required For Capital Adequacy CommonEquityTierOneCapitalRequiredForCapitalAdequacy	631893000
CY2019Q4	aub	Common Equity Tier One Capital Required For Capital Adequacy To Risk Weighted Assets CommonEquityTierOneCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.0450
CY2019Q4	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	1437908000
CY2019Q4	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.1024
CY2019Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy TierOneRiskBasedCapitalRequiredForCapitalAdequacy	842524000
CY2019Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.0600
CY2019Q4	us-gaap	Capital Capital	1773835000
CY2019Q4	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.1263
CY2019Q4	us-gaap	Capital Required For Capital Adequacy CapitalRequiredForCapitalAdequacy	1123569000
CY2019Q4	us-gaap	Capital Required For Capital Adequacy To Risk Weighted Assets CapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.0800
CY2019Q4	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	1437908000
CY2019Q4	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.0879
CY2019Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy TierOneLeverageCapitalRequiredForCapitalAdequacy	654338000
CY2019Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.0400
CY2018Q4	us-gaap	Common Equity Tier One Capital CommonEquityTierOneCapital	1106871000
CY2018Q4	aub	Common Equity Tier One Capital To Risk Weighted Assets CommonEquityTierOneCapitalToRiskWeightedAssets	0.0993
CY2018Q4	us-gaap	Common Equity Tier One Capital Required For Capital Adequacy CommonEquityTierOneCapitalRequiredForCapitalAdequacy	501608000
CY2018Q4	aub	Common Equity Tier One Capital Required For Capital Adequacy To Risk Weighted Assets CommonEquityTierOneCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.0450
CY2018Q4	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	1236709000
CY2018Q4	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.1109
CY2018Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy TierOneRiskBasedCapitalRequiredForCapitalAdequacy	668817000
CY2018Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.0600
CY2018Q4	us-gaap	Capital Capital	1435711000
CY2018Q4	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.1288
CY2018Q4	us-gaap	Capital Required For Capital Adequacy CapitalRequiredForCapitalAdequacy	891753000
CY2018Q4	us-gaap	Capital Required For Capital Adequacy To Risk Weighted Assets CapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.0800
CY2018Q4	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	1236709000
CY2018Q4	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.0971
CY2018Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy TierOneLeverageCapitalRequiredForCapitalAdequacy	509678000
CY2018Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.0400
CY2019	aub	Minimum Number Of Market Participants MinimumNumberOfMarketParticipants	4000
CY2019	aub	Level3 Fair Value Measurements Weighted Average Related To Impaired Loans Level3FairValueMeasurementsWeightedAverageRelatedToImpairedLoans	0.059
CY2018	aub	Level3 Fair Value Measurements Weighted Average Related To Impaired Loans Level3FairValueMeasurementsWeightedAverageRelatedToImpairedLoans	0.053
CY2019	aub	Level3 Fair Value Measurements Weighted Average Related To Foreclosed Property Level3FairValueMeasurementsWeightedAverageRelatedToForeclosedProperty	0.045
CY2018	aub	Level3 Fair Value Measurements Weighted Average Related To Foreclosed Property Level3FairValueMeasurementsWeightedAverageRelatedToForeclosedProperty	0.037
CY2018	aub	Level3 Fair Value Measurements Weighted Average Related To Former Bank Premises Level3FairValueMeasurementsWeightedAverageRelatedToFormerBankPremises	0
CY2019	aub	Level3 Fair Value Measurements Weighted Average Related To Former Bank Premises Level3FairValueMeasurementsWeightedAverageRelatedToFormerBankPremises	0
CY2019	aub	Valuation Expenses Related To Foreclosed Properties ValuationExpensesRelatedToForeclosedProperties	921000
CY2018	aub	Valuation Expenses Related To Foreclosed Properties ValuationExpensesRelatedToForeclosedProperties	1300000
CY2017	aub	Valuation Expenses Related To Foreclosed Properties ValuationExpensesRelatedToForeclosedProperties	1600000
CY2019	aub	Valuation Expenses Related To Former Bank Premises ValuationExpensesRelatedToFormerBankPremises	985000
CY2018	aub	Valuation Expenses Related To Former Bank Premises ValuationExpensesRelatedToFormerBankPremises	0
CY2017	aub	Valuation Expenses Related To Former Bank Premises ValuationExpensesRelatedToFormerBankPremises	339000
CY2019	aub	Minimum Number Of Market Participants MinimumNumberOfMarketParticipants	4000
CY2019Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	436032000
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1945445000
CY2019Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	603503000
CY2019Q4	us-gaap	Restricted Investments At Fair Value RestrictedInvestmentsAtFairValue	130848000
CY2019Q4	us-gaap	Loans Held For Sale Fair Value Disclosure LoansHeldForSaleFairValueDisclosure	55405000
CY2019Q4	us-gaap	Loans Receivable Fair Value Disclosure LoansReceivableFairValueDisclosure	12449505000
CY2019Q4	us-gaap	Fair Value Hedge Assets At Fair Value FairValueHedgeAssetsAtFairValue	182000
CY2019Q4	us-gaap	Accounts Receivable Fair Value Disclosure AccountsReceivableFairValueDisclosure	52721000
CY2019Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	322917000
CY2019Q4	us-gaap	Deposits Fair Value Disclosure DepositsFairValueDisclosure	13349943000
CY2019Q4	us-gaap	Debt Instrument Fair Value DebtInstrumentFairValue	1479606000
CY2019Q4	us-gaap	Accrued Liabilities Fair Value Disclosure AccruedLiabilitiesFairValueDisclosure	6108000
CY2019Q4	us-gaap	Cash Flow Hedge Derivative Instrument Liabilities At Fair Value CashFlowHedgeDerivativeInstrumentLiabilitiesAtFairValue	1147000
CY2019Q4	us-gaap	Fair Value Hedge Liabilities At Fair Value FairValueHedgeLiabilitiesAtFairValue	6256000
CY2018Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	261199000
CY2018Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1774821000
CY2018Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	499501000
CY2018Q4	us-gaap	Restricted Investments At Fair Value RestrictedInvestmentsAtFairValue	124602000
CY2018Q4	us-gaap	Loans Receivable Fair Value Disclosure LoansReceivableFairValueDisclosure	9534717000
CY2018Q4	us-gaap	Fair Value Hedge Assets At Fair Value FairValueHedgeAssetsAtFairValue	1872000
CY2018Q4	us-gaap	Accounts Receivable Fair Value Disclosure AccountsReceivableFairValueDisclosure	46062000
CY2018Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	263034000
CY2018Q4	us-gaap	Deposits Fair Value Disclosure DepositsFairValueDisclosure	9989788000
CY2018Q4	us-gaap	Debt Instrument Fair Value DebtInstrumentFairValue	1742038000
CY2018Q4	us-gaap	Accrued Liabilities Fair Value Disclosure AccruedLiabilitiesFairValueDisclosure	5284000
CY2018Q4	us-gaap	Cash Flow Hedge Derivative Instrument Liabilities At Fair Value CashFlowHedgeDerivativeInstrumentLiabilitiesAtFairValue	4786000
CY2018Q4	us-gaap	Fair Value Hedge Liabilities At Fair Value FairValueHedgeLiabilitiesAtFairValue	1684000
CY2019	us-gaap	Fees And Commissions Mortgage Banking And Servicing FeesAndCommissionsMortgageBankingAndServicing	10303000
CY2018	us-gaap	Fees And Commissions Mortgage Banking And Servicing FeesAndCommissionsMortgageBankingAndServicing	0
CY2017	us-gaap	Fees And Commissions Mortgage Banking And Servicing FeesAndCommissionsMortgageBankingAndServicing	0
CY2019	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	7675000
CY2018	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	383000
CY2017	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	800000
CY2019	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	8311000
CY2018	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	7198000
CY2017	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	6144000
CY2019	aub	Interest Rate Swap Fees On Loans InterestRateSwapFeesOnLoans	14126000
CY2018	aub	Interest Rate Swap Fees On Loans InterestRateSwapFeesOnLoans	3554000
CY2017	aub	Interest Rate Swap Fees On Loans InterestRateSwapFeesOnLoans	3051000
CY2019	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	0
CY2018	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	19966000
CY2017	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	0
CY2019	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	17791000
CY2018	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	7145000
CY2017	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	2772000
CY2019	us-gaap	Noninterest Income NoninterestIncome	132815000
CY2018	us-gaap	Noninterest Income NoninterestIncome	104241000
CY2017	us-gaap	Noninterest Income NoninterestIncome	62429000
CY2019	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	5550000
CY2018	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	4592000
CY2017	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	3505000
CY2019	us-gaap	Employee Stock Ownership Plan Esop Cash Contributions To Esop EmployeeStockOwnershipPlanESOPCashContributionsToESOP	1163000
CY2018	us-gaap	Employee Stock Ownership Plan Esop Cash Contributions To Esop EmployeeStockOwnershipPlanESOPCashContributionsToESOP	1005000
CY2017	us-gaap	Employee Stock Ownership Plan Esop Cash Contributions To Esop EmployeeStockOwnershipPlanESOPCashContributionsToESOP	1255000
CY2019	aub	Cash Profit Sharing Bonuses Paid To Employees CashProfitSharingBonusesPaidToEmployees	780000
CY2018	aub	Cash Profit Sharing Bonuses Paid To Employees CashProfitSharingBonusesPaidToEmployees	1509000
CY2017	aub	Cash Profit Sharing Bonuses Paid To Employees CashProfitSharingBonusesPaidToEmployees	1461000
CY2019	aub	Total Payments Made For Employee Benefits TotalPaymentsMadeForEmployeeBenefits	7493000
CY2018	aub	Total Payments Made For Employee Benefits TotalPaymentsMadeForEmployeeBenefits	7106000
CY2017	aub	Total Payments Made For Employee Benefits TotalPaymentsMadeForEmployeeBenefits	6221000
CY2019Q4	us-gaap	Other Deferred Compensation Arrangements Liability Current And Noncurrent OtherDeferredCompensationArrangementsLiabilityCurrentAndNoncurrent	15700000
CY2018Q4	us-gaap	Other Deferred Compensation Arrangements Liability Current And Noncurrent OtherDeferredCompensationArrangementsLiabilityCurrentAndNoncurrent	11800000
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Expiration Period SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod	P10Y
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	8332000
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	6132000
CY2017	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	4648000
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	1750000
CY2018	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	1287000
CY2017	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	1467000
CY2019	aub	Share Based Compensation Allocated Expense On Earnings Per Share ShareBasedCompensationAllocatedExpenseOnEarningsPerShare	0.08
CY2018	aub	Share Based Compensation Allocated Expense On Earnings Per Share ShareBasedCompensationAllocatedExpenseOnEarningsPerShare	0.07
CY2017	aub	Share Based Compensation Allocated Expense On Earnings Per Share ShareBasedCompensationAllocatedExpenseOnEarningsPerShare	0.06
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	47585
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	14.44
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	56619
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	24.48
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	9447
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	31.94
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	8060
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	36.78
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	422138
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	32.48
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P2Y6M18D
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	2313739
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	368146
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	32.57
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P2Y3M29D
CY2019Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	2006915
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	56619
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	684000
CY2019	aub	Share Based Compensation Arrangement By Share Based Payment Award Options Exercised In Period Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisedInPeriodFairValue	2100000
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	1400000
CY2019	us-gaap	Deferred Tax Expense From Stock Options Exercised DeferredTaxExpenseFromStockOptionsExercised	127000
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	2300000
CY2018	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	72743
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	1900000
CY2018	aub	Share Based Compensation Arrangement By Share Based Payment Award Options Exercised In Period Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisedInPeriodFairValue	2800000
CY2018	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	983000
CY2018	us-gaap	Deferred Tax Expense From Stock Options Exercised DeferredTaxExpenseFromStockOptionsExercised	390000
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	656000
CY2017	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	63476
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	1200000
CY2017	aub	Share Based Compensation Arrangement By Share Based Payment Award Options Exercised In Period Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisedInPeriodFairValue	2200000
CY2017	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	1000000.0
CY2017	us-gaap	Deferred Tax Expense From Stock Options Exercised DeferredTaxExpenseFromStockOptionsExercised	370000
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	2700000
CY2019	aub	Schedule Of Share Based Payment Award Performance Stock Units Valuation Assumptions ScheduleOfShareBasedPaymentAwardPerformanceStockUnitsValuationAssumptions	<p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">During years ended December 31, 2019, 2018 and 2017 PSUs were awarded with a market based component based on total shareholder return. The fair value of each PSU granted is estimated on the date of grant using the Monte Carlo simulation lattice model that uses the assumptions noted in the following table:</p><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="margin-bottom:12pt;visibility:hidden;"></span></p><table style="border-collapse:collapse;font-size:16pt;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:66.69%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:7.71%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:3.1%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:7.84%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:3.1%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:7.84%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:66.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:8pt;visibility:hidden;"></span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;"> </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:7.71%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">2019</b><sup style="font-size:6pt;font-weight:bold;line-height:100%;top:0pt;vertical-align:top;">(5)</sup></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:3.1%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;"> </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:7.84%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">2018</b><sup style="font-size:6pt;font-weight:bold;line-height:100%;top:0pt;vertical-align:top;">(5)</sup></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:3.1%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;"> </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:7.84%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">2017</b><sup style="font-size:6pt;font-weight:bold;line-height:100%;top:0pt;vertical-align:top;">(5)</sup></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;"> </b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:66.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">Dividend yield</b><sup style="font-size:7.5pt;font-weight:bold;line-height:100%;top:0pt;vertical-align:top;">(1)</sup></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;"> </b></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.71%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"><b style="font-weight:bold;"> 2.57</b></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:3.1%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">% </b></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"><b style="font-weight:bold;"> 2.25</b></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:3.1%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">% </b></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"><b style="font-weight:bold;"> 2.15</b></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">%</b></p></td></tr><tr><td style="vertical-align:bottom;width:66.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">Expected life in years</b><sup style="font-size:7.5pt;font-weight:bold;line-height:100%;top:0pt;vertical-align:top;">(2)</sup></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;"> </b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.71%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"><b style="font-weight:bold;"> 2.86</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:3.1%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;"> </b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"><b style="font-weight:bold;"> 2.86</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:3.1%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;"> </b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"><b style="font-weight:bold;"> 2.85</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-weight:bold;visibility:hidden;"></span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:66.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">Expected volatility</b><sup style="font-size:7.5pt;font-weight:bold;line-height:100%;top:0pt;vertical-align:top;">(3)</sup></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;"> </b></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.71%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"><b style="font-weight:bold;"> 24.04</b></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:3.1%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">% </b></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"><b style="font-weight:bold;"> 23.47</b></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:3.1%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">% </b></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"><b style="font-weight:bold;"> 23.35</b></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">%</b></p></td></tr><tr><td style="vertical-align:bottom;width:66.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">Risk-free interest rate</b><sup style="font-size:7.5pt;font-weight:bold;line-height:100%;top:0pt;vertical-align:top;">(4)</sup></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;"> </b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.71%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"><b style="font-weight:bold;"> 2.48</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:3.1%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">% </b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"><b style="font-weight:bold;"> 2.38</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:3.1%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">% </b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"><b style="font-weight:bold;"> 1.40</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">%</b></p></td></tr></table><div style="font-family:'Times New Roman';font-size:10.0pt;margin-bottom:0pt;min-height:1.19em;position:relative;width:100%;"><div style="background-color:#000000;height:1pt;position:relative;top:0.6em;width:25.0%;border:none;margin:0 auto 0 0;"/></div><table style="border-collapse:collapse;font-family:'Times New Roman';font-size:10pt;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;width:100%;border:0pt;"><tr><td style="font-family:'Times New Roman';font-size:7.5pt;vertical-align:top;white-space:nowrap;width:18pt;padding:0pt;">(1)</td><td style="padding:0pt;"><i style="color:#000000;font-family:'Times New Roman';font-size:10pt;font-style:italic;font-weight:normal;text-align:left;">Calculated as the ratio of the current dividend paid per the stock price on the date of grant.</i></td></tr></table><table style="border-collapse:collapse;font-family:'Times New Roman';font-size:10pt;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;width:100%;border:0pt;"><tr><td style="font-family:'Times New Roman';font-size:7.5pt;vertical-align:top;white-space:nowrap;width:18pt;padding:0pt;">(2)</td><td style="padding:0pt;"><i style="color:#000000;font-family:'Times New Roman';font-size:10pt;font-style:italic;font-weight:normal;text-align:left;">Represents the remaining performance period as of the grant date.</i></td></tr></table><table style="border-collapse:collapse;font-family:'Times New Roman';font-size:10pt;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;width:100%;border:0pt;"><tr><td style="font-family:'Times New Roman';font-size:7.5pt;vertical-align:top;white-space:nowrap;width:18pt;padding:0pt;">(3)</td><td style="padding:0pt;"><i style="color:#000000;font-family:'Times New Roman';font-size:10pt;font-style:italic;font-weight:normal;text-align:left;">Based on the historical volatility for the period commensurate with the expected life of the PSUs.</i></td></tr></table><table style="border-collapse:collapse;font-family:'Times New Roman';font-size:10pt;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;width:100%;border:0pt;"><tr><td style="font-family:'Times New Roman';font-size:7.5pt;vertical-align:top;white-space:nowrap;width:18pt;padding:0pt;">(4)</td><td style="padding:0pt;"><i style="color:#000000;font-family:'Times New Roman';font-size:10pt;font-style:italic;font-weight:normal;text-align:left;">Based upon the zero-coupon U.S. Treasury rate commensurate with the expected life of the PSUs on the grant date.</i></td></tr></table><table style="border-collapse:collapse;font-family:'Times New Roman';font-size:10pt;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;width:100%;border:0pt;"><tr><td style="font-family:'Times New Roman';font-size:7.5pt;vertical-align:top;white-space:nowrap;width:18pt;padding:0pt;">(5)</td><td style="padding:0pt;"><i style="color:#000000;font-family:'Times New Roman';font-size:10pt;font-style:italic;font-weight:normal;text-align:left;">Assumptions disclosed represent those used in the primary annual issuance.</i></td></tr></table><div style="margin-top:12pt;"/>
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	3925000
CY2019Q4	aub	Deferred Tax Assets Tax Purchase Accounting DeferredTaxAssetsTaxPurchaseAccounting	16021000
CY2018Q4	aub	Deferred Tax Assets Tax Purchase Accounting DeferredTaxAssetsTaxPurchaseAccounting	11788000
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0257
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0225
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0215
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P2Y10M9D
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P2Y10M9D
CY2017	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P2Y10M6D
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.2404
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.2347
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.2335
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0248
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0238
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0140
CY2019Q4	aub	Estimated Unamortized Compensation Expense Year One EstimatedUnamortizedCompensationExpenseYearOne	6436000
CY2019Q4	aub	Estimated Unamortized Compensation Expense Year Two EstimatedUnamortizedCompensationExpenseYearTwo	4186000
CY2019Q4	aub	Estimated Unamortized Compensation Expense Year Three EstimatedUnamortizedCompensationExpenseYearThree	652000
CY2019Q4	aub	Estimated Unamortized Compensation Expense Year Four EstimatedUnamortizedCompensationExpenseYearFour	100000
CY2019Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	11374000
CY2019Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	11400000
CY2017Q4	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2017Q4	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2017Q4	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2017	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	6100000
CY2018	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	0
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	18938000
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	19369000
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	3507000
CY2019Q4	aub	Deferred Tax Assets Lease Right Of Use Asset DeferredTaxAssetsLeaseRightOfUseAsset	13507000
CY2018Q4	aub	Deferred Tax Assets Lease Right Of Use Asset DeferredTaxAssetsLeaseRightOfUseAsset	0
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	2032000
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	894000
CY2019Q4	aub	Deferred Tax Assets Other Real Estate Owned DeferredTaxAssetsOtherRealEstateOwned	3295000
CY2018Q4	aub	Deferred Tax Assets Other Real Estate Owned DeferredTaxAssetsOtherRealEstateOwned	2515000
CY2019Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	1169000
CY2018Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	1577000
CY2019Q4	aub	Deferred Tax Assets Net Operating Loss DeferredTaxAssetsNetOperatingLoss	55023000
CY2018Q4	aub	Deferred Tax Assets Net Operating Loss DeferredTaxAssetsNetOperatingLoss	66037000
CY2019Q4	aub	Deferred Tax Assets Nonaccrual Loans DeferredTaxAssetsNonaccrualLoans	3243000
CY2018Q4	aub	Deferred Tax Assets Nonaccrual Loans DeferredTaxAssetsNonaccrualLoans	3990000
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	4227000
CY2018Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	4618000
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	120962000
CY2018Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	114713000
CY2019Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Deferred Policy Acquisition Cost DeferredTaxLiabilitiesDeferredExpenseDeferredPolicyAcquisitionCost	19815000
CY2018Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Deferred Policy Acquisition Cost DeferredTaxLiabilitiesDeferredExpenseDeferredPolicyAcquisitionCost	13053000
CY2019Q4	aub	Deferred Tax Assets Lease Right Of Use Liability DeferredTaxAssetsLeaseRightOfUseLiability	11191000
CY2018Q4	aub	Deferred Tax Assets Lease Right Of Use Liability DeferredTaxAssetsLeaseRightOfUseLiability	0
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	6696000
CY2018Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	3877000
CY2019Q4	aub	Deferred Tax Liabilities Available For Sale Securities DeferredTaxLiabilitiesAvailableForSaleSecurities	10069000
CY2018Q4	aub	Deferred Tax Liabilities Available For Sale Securities DeferredTaxLiabilitiesAvailableForSaleSecurities	25000
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	511000
CY2018Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	583000
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	48282000
CY2018Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	17538000
CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	72680000
CY2018Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	97175000
CY2019Q4	us-gaap	Liability For Uncertain Tax Positions Current LiabilityForUncertainTaxPositionsCurrent	0
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	22500000
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	12114000
CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	27255000
CY2019	aub	Deferred Income Tax Expense Benefit Adjusted For Discontinued Operations DeferredIncomeTaxExpenseBenefitAdjustedForDiscontinuedOperations	15057000
CY2018	aub	Deferred Income Tax Expense Benefit Adjusted For Discontinued Operations DeferredIncomeTaxExpenseBenefitAdjustedForDiscontinuedOperations	17902000
CY2017	aub	Deferred Income Tax Expense Benefit Adjusted For Discontinued Operations DeferredIncomeTaxExpenseBenefitAdjustedForDiscontinuedOperations	5535000
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	37557000
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	30016000
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	32790000
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	48564000
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	37680000
CY2017	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	36738000
CY2019	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	8259000
CY2018	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	5188000
CY2017	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	6112000
CY2019	aub	Effective Income Tax Rate Reconciliation Net Operating Loss Amount EffectiveIncomeTaxRateReconciliationNetOperatingLossAmount	0
CY2018	aub	Effective Income Tax Rate Reconciliation Net Operating Loss Amount EffectiveIncomeTaxRateReconciliationNetOperatingLossAmount	0
CY2017	aub	Effective Income Tax Rate Reconciliation Net Operating Loss Amount EffectiveIncomeTaxRateReconciliationNetOperatingLossAmount	-2982000
CY2019	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	0
CY2018	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	0
CY2017	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	6105000
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-1078000
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-1133000
CY2017	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	0
CY2019	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-1670000
CY2018	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-1343000
CY2017	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-959000
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	37557000
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	30016000
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	32790000
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.162
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.167
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.312
CY2019	us-gaap	Income Tax Credits And Adjustments IncomeTaxCreditsAndAdjustments	2900000
CY2018	us-gaap	Income Tax Credits And Adjustments IncomeTaxCreditsAndAdjustments	1100000
CY2017	us-gaap	Income Tax Credits And Adjustments IncomeTaxCreditsAndAdjustments	858000
CY2019	us-gaap	Net Income Loss From Continuing Operations Available To Common Shareholders Basic NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic	193698000
CY2018	us-gaap	Net Income Loss From Continuing Operations Available To Common Shareholders Basic NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic	149413000
CY2017	us-gaap	Net Income Loss From Continuing Operations Available To Common Shareholders Basic NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic	72176000
CY2019	us-gaap	Net Income Loss From Discontinued Operations Available To Common Shareholders Basic NetIncomeLossFromDiscontinuedOperationsAvailableToCommonShareholdersBasic	-170000
CY2018	us-gaap	Net Income Loss From Discontinued Operations Available To Common Shareholders Basic NetIncomeLossFromDiscontinuedOperationsAvailableToCommonShareholdersBasic	-3165000
CY2017	us-gaap	Net Income Loss From Discontinued Operations Available To Common Shareholders Basic NetIncomeLossFromDiscontinuedOperationsAvailableToCommonShareholdersBasic	747000
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	193528000
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	146248000
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	72923000
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	80201000
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	65859000
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	43699000
CY2019	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	63000
CY2018	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	50000
CY2017	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	81000
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	80264000
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	65909000
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	43780000
CY2019	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.41
CY2018	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.27
CY2017	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.65
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.05
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.02
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.41
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.22
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.67
CY2019	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.41
CY2018	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.27
CY2017	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.65
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.05
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.02
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.41
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.22
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.67
CY2019Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation AssetsOfDisposalGroupIncludingDiscontinuedOperation	668000
CY2019Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation	640000
CY2018Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation AssetsOfDisposalGroupIncludingDiscontinuedOperation	1500000
CY2018Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation	1700000

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$AUB
Atlantic Union Bankshares Corp Stock $aub

2018 Q4 Form 10-K Financial Statement

#000155837020001345 Filed on February 25, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AUB Atlantic Union Bankshares Corp Stock $aub

2018 Q4 Form 10-K Financial Statement

#000155837020001345 Filed on February 25, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AUB
Atlantic Union Bankshares Corp Stock $aub