$AUBN
AUBURN NATIONAL BANCORPORATION, INC Stock $aubn

$aubn Overview Financials Valuation SEC Filings Company Website

2021 Form 10-K Financial Statement

#000119312522068826 Filed on March 08, 2022

Income Statement

Concept	2021	2020 Q4	2020
Revenue	$26.51M		$28.19M
YoY Change	-5.98%		-6.79%
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	$644.0K	$330.0K	$905.0K
YoY Change	-28.84%	-26.67%	36.71%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$2.517M		$3.856M
YoY Change	-34.73%		-7.82%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$9.445M	$2.510M	$9.059M
YoY Change	4.26%	-25.3%	-25.2%
Income Tax	$1.406M	$450.0K	$1.605M
% Of Pretax Income	14.89%	17.93%	17.72%
Net Earnings	$8.039M	$2.060M	$7.454M
YoY Change	7.85%	-23.13%	-23.48%
Net Earnings / Revenue	30.33%		26.44%
Basic Earnings Per Share	$2.27
Diluted Earnings Per Share	$2.265M	$577.0K	$2.087M
COMMON SHARES
Basic Shares Outstanding	3.545M shares	3.566M shares
Diluted Shares Outstanding

Balance Sheet

Concept	2021	2020 Q4	2020
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents		$112.6M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$42.40M	$22.19M	$23.00M
YoY Change	84.35%	50.53%	48.39%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$400.0K		-$1.500M
YoY Change	-126.67%
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$1.105B	$956.6M	$956.6M
YoY Change	15.53%	15.55%	15.55%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$3.700M	$6.700M	$6.700M
YoY Change	-44.78%	55.81%	55.81%
Deferred Revenue
YoY Change
Short-Term Debt	$3.400M	$2.400M	$2.400M
YoY Change	41.67%	118.18%	118.18%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$3.700M	$6.700M	$6.700M
YoY Change	-44.78%	55.81%	55.81%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00	$0.00
YoY Change
Other Long-Term Liabilities
YoY Change
Total Long-Term Liabilities	$0.00	$0.00	$0.00
YoY Change
TOTAL LIABILITIES
Total Short-Term Liabilities	$3.700M	$6.700M	$6.700M
Total Long-Term Liabilities	$0.00	$0.00	$0.00
Total Liabilities	$1.001B	$848.9M	$848.9M
YoY Change	17.96%	16.36%	16.35%
SHAREHOLDERS EQUITY
Retained Earnings		$105.6M
YoY Change		3.75%
Common Stock		$3.828M
YoY Change		0.13%
Preferred Stock
YoY Change
Treasury Stock (at cost)		$9.354M
YoY Change		-0.01%
Treasury Stock Shares		390.9K shares
Shareholders Equity	$103.7M	$107.7M	$107.7M
YoY Change
Total Liabilities & Shareholders Equity	$1.105B	$956.6M	$956.6M
YoY Change	15.53%	15.55%	15.55%

Cashflow Statement

Concept	2021	2020 Q4	2020
OPERATING ACTIVITIES
Net Income	$8.039M	$2.060M	$7.454M
YoY Change	7.85%	-23.13%	-23.48%
Depreciation, Depletion And Amortization	$644.0K	$330.0K	$905.0K
YoY Change	-28.84%	-26.67%	36.71%
Cash From Operating Activities	$12.32M	$5.570M	$9.728M
YoY Change	26.64%	138.03%	-10.34%
INVESTING ACTIVITIES
Capital Expenditures	-$20.18M	-$6.830M	-$8.360M
YoY Change	141.39%	3152.38%	361.88%
Acquisitions
YoY Change
Other Investing Activities	-$98.67M	-$4.070M	-$94.57M
YoY Change	4.34%	-122.16%	-465.28%
Cash From Investing Activities	-$118.8M	-$10.89M	-$102.9M
YoY Change	15.47%	-159.93%	-527.32%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	$1.619M		$0.00
YoY Change			-100.0%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	150.2M	15.23M	$113.3M
YoY Change	32.55%	5339.29%	-1597.42%
NET CHANGE
Cash From Operating Activities	$12.32M	5.570M	$9.728M
Cash From Investing Activities	-$118.8M	-10.89M	-$102.9M
Cash From Financing Activities	150.2M	15.23M	$113.3M
Net Change In Cash	-$106.5M	9.910M	$20.13M
YoY Change	-629.12%	-52.33%	-26.44%
FREE CASH FLOW
Cash From Operating Activities	$12.32M	$5.570M	$9.728M
Capital Expenditures	-$20.18M	-$6.830M	-$8.360M
Free Cash Flow	$32.50M	$12.40M	$18.09M
YoY Change	79.68%	386.27%	42.88%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2020Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	8500000	shares
CY2020Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	3957135	shares
CY2021	dei	Local Phone Number LocalPhoneNumber	821-9200
CY2021	dei	Entity Central Index Key EntityCentralIndexKey	0000750574
CY2021	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2021	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2021	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2021	dei	Amendment Flag AmendmentFlag	false
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherAssets
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherAssets
CY2021Q4	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherLiabilities
CY2020Q4	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherLiabilities
CY2021	dei	Document Annual Report DocumentAnnualReport	true
CY2021	dei	Document Transition Report DocumentTransitionReport	false
CY2021	dei	Entity Small Business EntitySmallBusiness	true
CY2021	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2021	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	false
CY2021	dei	Entity Shell Company EntityShellCompany	false
CY2021	dei	Document Type DocumentType	10-K
CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-12-31
CY2021	dei	Entity File Number EntityFileNumber	0-26486
CY2021	dei	Entity Registrant Name EntityRegistrantName	Auburn National Bancorporation, Inc.
CY2021	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2021	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	63-0885779
CY2021	dei	Entity Address Address Line1 EntityAddressAddressLine1	132 N. Gay Street
CY2021	dei	Entity Address City Or Town EntityAddressCityOrTown	Auburn,
CY2021	dei	Entity Address State Or Province EntityAddressStateOrProvince	AL
CY2021	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	36830
CY2021	dei	City Area Code CityAreaCode	334
CY2021	dei	Security12b Title Security12bTitle	Common Stock
CY2021	dei	Trading Symbol TradingSymbol	AUBN
CY2021	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2021	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2021	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2021	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2021	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2021	dei	Entity Filer Category EntityFilerCategory	Non-accelerated Filer
CY2021Q2	dei	Entity Public Float EntityPublicFloat	81577219	USD
CY2021	dei	Auditor Firm AuditorFirmId	149
CY2021	dei	Auditor Name AuditorName	Elliott Davis, LLC
CY2021	dei	Auditor Location AuditorLocation	March 8, 2022
CY2021Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	11210000	USD
CY2020Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	14868000	USD
CY2021Q4	us-gaap	Federal Funds Sold FederalFundsSold	77420000	USD
CY2020Q4	us-gaap	Federal Funds Sold FederalFundsSold	28557000	USD
CY2021Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	67629000	USD
CY2020Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	69150000	USD
CY2021Q4	us-gaap	Cash Cash Equivalents And Federal Funds Sold CashCashEquivalentsAndFederalFundsSold	156259000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents And Federal Funds Sold CashCashEquivalentsAndFederalFundsSold	112575000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	421891000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	335177000	USD
CY2021Q4	us-gaap	Loans Receivable Held For Sale Amount LoansReceivableHeldForSaleAmount	1376000	USD
CY2020Q4	us-gaap	Loans Receivable Held For Sale Amount LoansReceivableHeldForSaleAmount	3418000	USD
CY2021Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	458364000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	461700000	USD
CY2021Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	4939000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	5618000	USD
CY2021Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	453425000	USD
CY2021Q4	us-gaap	Common Stock Value CommonStockValue	39000	USD
CY2020Q4	us-gaap	Common Stock Value CommonStockValue	39000	USD
CY2021Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	109974000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	7599000	USD
CY2021Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	436650	shares
CY2020Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	390859	shares
CY2021Q4	us-gaap	Treasury Stock Value TreasuryStockValue	10972000	USD
CY2021Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	3794000	USD
CY2020Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	3789000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	456082000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	41724000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	22193000	USD
CY2021Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	19635000	USD
CY2020Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	19232000	USD
CY2021Q4	us-gaap	Other Assets OtherAssets	10840000	USD
CY2020Q4	us-gaap	Other Assets OtherAssets	7920000	USD
CY2021Q4	us-gaap	Assets Assets	1105150000	USD
CY2020Q4	us-gaap	Assets Assets	956597000	USD
CY2021Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	316132000	USD
CY2020Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	245398000	USD
CY2021Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	678111000	USD
CY2020Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	594394000	USD
CY2021Q4	us-gaap	Deposits Deposits	994243000	USD
CY2020Q4	us-gaap	Deposits Deposits	839792000	USD
CY2021Q4	us-gaap	Federal Funds Purchased And Securities Sold Under Agreements To Repurchase FederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase	3448000	USD
CY2020Q4	us-gaap	Federal Funds Purchased And Securities Sold Under Agreements To Repurchase FederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase	2392000	USD
CY2021Q4	us-gaap	Other Liabilities OtherLiabilities	3733000	USD
CY2020Q4	us-gaap	Other Liabilities OtherLiabilities	6723000	USD
CY2021Q4	us-gaap	Liabilities Liabilities	1001424000	USD
CY2020Q4	us-gaap	Liabilities Liabilities	848907000	USD
CY2021Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2020Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2021Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2021Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	8500000	shares
CY2021Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	3957135	shares
CY2020Q4	us-gaap	Treasury Stock Value TreasuryStockValue	9354000	USD
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	103726000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	107690000	USD
CY2021Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1105150000	USD
CY2020Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	956597000	USD
CY2021	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	20473000	USD
CY2020	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	3932000	USD
CY2021	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	1772000	USD
CY2020	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	1851000	USD
CY2021	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	155000	USD
CY2020	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	356000	USD
CY2021	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	26507000	USD
CY2020	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	28194000	USD
CY2021	us-gaap	Interest Expense Deposits InterestExpenseDeposits	2500000	USD
CY2020	us-gaap	Interest Expense Deposits InterestExpenseDeposits	3847000	USD
CY2020	us-gaap	Interest Expense Short Term Borrowings InterestExpenseShortTermBorrowings	9000	USD
CY2021	us-gaap	Interest Expense InterestExpense	2517000	USD
CY2020	us-gaap	Interest Expense InterestExpense	3856000	USD
CY2021	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	23990000	USD
CY2020	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	24338000	USD
CY2021	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	-600000	USD
CY2020	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	1100000	USD
CY2021	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	24590000	USD
CY2020	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	23238000	USD
CY2021	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	566000	USD
CY2020	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	585000	USD
CY2021	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	1547000	USD
CY2020	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	2319000	USD
CY2021	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	403000	USD
CY2020	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	724000	USD
CY2021	us-gaap	Noninterest Income Other NoninterestIncomeOther	1757000	USD
CY2020	us-gaap	Noninterest Income Other NoninterestIncomeOther	1644000	USD
CY2021	us-gaap	Debt Securities Realized Gain Loss DebtSecuritiesRealizedGainLoss	15000	USD
CY2020	us-gaap	Debt Securities Realized Gain Loss DebtSecuritiesRealizedGainLoss	103000	USD
CY2021	us-gaap	Noninterest Income NoninterestIncome	4288000	USD
CY2020	us-gaap	Noninterest Income NoninterestIncome	5375000	USD
CY2021	us-gaap	Labor And Related Expense LaborAndRelatedExpense	11710000	USD
CY2020	us-gaap	Labor And Related Expense LaborAndRelatedExpense	11316000	USD
CY2021	us-gaap	Occupancy Net OccupancyNet	1743000	USD
CY2020	us-gaap	Occupancy Net OccupancyNet	2511000	USD
CY2021	us-gaap	Professional Fees ProfessionalFees	995000	USD
CY2020	us-gaap	Professional Fees ProfessionalFees	1052000	USD
CY2021	aubn	Fdic And Other Regulatory Assessments FdicAndOtherRegulatoryAssessments	426000	USD
CY2020	aubn	Fdic And Other Regulatory Assessments FdicAndOtherRegulatoryAssessments	256000	USD
CY2021	us-gaap	Other Noninterest Expense OtherNoninterestExpense	4559000	USD
CY2020	us-gaap	Other Noninterest Expense OtherNoninterestExpense	4419000	USD
CY2021	us-gaap	Noninterest Expense NoninterestExpense	19433000	USD
CY2020	us-gaap	Noninterest Expense NoninterestExpense	19554000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	9445000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	9059000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1406000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1605000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	8039000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	7454000	USD
CY2021	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	2.27
CY2020	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	2.09
CY2021	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	3545310	shares
CY2020	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	3566207	shares
CY2021	us-gaap	Profit Loss ProfitLoss	8039000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	7454000	USD
CY2021	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-6697000	USD
CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	5617000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	11000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	77000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-6708000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	5540000	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1331000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	12994000	USD
CY2019Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	3566146	shares
CY2020	us-gaap	Profit Loss ProfitLoss	7454000	USD
CY2021	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.04
CY2021	aubn	Cash Dividends Paid CashDividendsPaid	3682000	USD
CY2021	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	1619000	USD
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	3566276	shares
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	107690000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	8039000	USD
CY2021	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	6000	USD
CY2021Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	3520485	shares
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	103726000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	8039000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	5540000	USD
CY2020	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.02
CY2020	aubn	Cash Dividends Paid CashDividendsPaid	3638000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-6708000	USD
CY2020	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	6000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	7454000	USD
CY2021	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	-600000	USD
CY2020	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	1100000	USD
CY2021	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1244000	USD
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1666000	USD
CY2021	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-3979000	USD
CY2020	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-2862000	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	278000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-330000	USD
CY2021	us-gaap	Gain Loss On Investments GainLossOnInvestments	15000	USD
CY2020	us-gaap	Gain Loss On Investments GainLossOnInvestments	103000	USD
CY2021	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	1417000	USD
CY2020	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	2300000	USD
CY2021	aubn	Net Loss Gain On Other Real Estate NetLossGainOnOtherRealEstate	0	USD
CY2020	aubn	Net Loss Gain On Other Real Estate NetLossGainOnOtherRealEstate	52000	USD
CY2021	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	47937000	USD
CY2020	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	82726000	USD
CY2021	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	50901000	USD
CY2020	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	83138000	USD
CY2021	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	403000	USD
CY2020	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	442000	USD
CY2021	aubn	Income Recognized From Death Benefit Of Life Insurance IncomeRecognizedFromDeathBenefitOfLifeInsurance	0	USD
CY2020	aubn	Income Recognized From Death Benefit Of Life Insurance IncomeRecognizedFromDeathBenefitOfLifeInsurance	282000	USD
CY2021	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-1235000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	2656000	USD
CY2021	us-gaap	Increase Decrease In Operating Liabilities IncreaseDecreaseInOperatingLiabilities	-2984000	USD
CY2020	us-gaap	Increase Decrease In Operating Liabilities IncreaseDecreaseInOperatingLiabilities	2399000	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	12320000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	9728000	USD
CY2021	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	USD
CY2020	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	21029000	USD
CY2021	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	73607000	USD
CY2020	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	62021000	USD
CY2021	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	173243000	USD
CY2020	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	177686000	USD
CY2021	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	-2883000	USD
CY2020	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	766000	USD
CY2021	us-gaap	Payments For Proceeds From Productive Assets PaymentsForProceedsFromProductiveAssets	20175000	USD
CY2020	us-gaap	Payments For Proceeds From Productive Assets PaymentsForProceedsFromProductiveAssets	8355000	USD
CY2021	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	-267000	USD
CY2020	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	9000	USD
CY2021	aubn	Purchase Of New Markets Tax Credit Investment PurchaseOfNewMarketsTaxCreditInvestment	-2181000	USD
CY2020	aubn	Purchase Of New Markets Tax Credit Investment PurchaseOfNewMarketsTaxCreditInvestment	0	USD
CY2021	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	0	USD
CY2021	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	0	USD
CY2020	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	151000	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-118842000	USD
CY2021	us-gaap	Net Change Noninterest Bearing Deposits Domestic NetChangeNoninterestBearingDepositsDomestic	70734000	USD
CY2021	us-gaap	Net Change Interest Bearing Deposits Domestic NetChangeInterestBearingDepositsDomestic	83717000	USD
CY2021	us-gaap	Increase Decrease In Federal Funds Purchased And Securities Sold Under Agreements To Repurchase Net IncreaseDecreaseInFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchaseNet	1056000	USD
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1619000	USD
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2020	us-gaap	Payments Of Ordinary Dividends PaymentsOfOrdinaryDividends	3638000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	113325000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	20132000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents And Federal Funds Sold CashCashEquivalentsAndFederalFundsSold	92443000	USD
CY2021Q4	us-gaap	Cash Cash Equivalents And Federal Funds Sold CashCashEquivalentsAndFederalFundsSold	156259000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents And Federal Funds Sold CashCashEquivalentsAndFederalFundsSold	112575000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	4055000	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1956000	USD
CY2021	us-gaap	Transfer Of Other Real Estate TransferOfOtherRealEstate	374000	USD
CY2020	us-gaap	Transfer Of Other Real Estate TransferOfOtherRealEstate	99000	USD
CY2021	us-gaap	Nature Of Operations NatureOfOperations	<div id="TextBlockContainer1715" style="position:relative;font-family:'Times New Roman';font-size:13.28px;color:#000000;line-height:normal;width:661px;height:92px;display:inline-block;border:inherit;margin-left:-2px;margin-right:-2px;"><div id="a59314" style="position:absolute;font-family:'Times New Roman';font-size:13.28px;font-weight:bold;font-style:normal;color:#000000;left:4px;top:0px;">Nature of Business </div><div id="a59317" style="position:absolute;font-family:'Times New Roman';font-size:13.28px;font-weight:normal;font-style:normal;color:#000000;left:4px;top:31px;">Auburn National Bancorporation, Inc. (the “Company”) is a bank holding company<div style="display:inline-block;width:5px"> </div>whose primary business is conducted </div><div id="a59318" style="position:absolute;font-family:'Times New Roman';font-size:13.28px;font-weight:normal;font-style:normal;color:#000000;left:4px;top:46px;">by its wholly-owned subsidiary,<div style="display:inline-block;width:5px"> </div>AuburnBank (the “Bank”). AuburnBank is a commercial bank located in Auburn, </div><div id="a59322" style="position:absolute;font-family:'Times New Roman';font-size:13.28px;font-weight:normal;font-style:normal;color:#000000;left:4px;top:61px;">Alabama. The Bank provides a full range of banking services in its primary market area,<div style="display:inline-block;width:5px"> </div>Lee County, which includes the </div><div id="a59323" style="position:absolute;font-family:'Times New Roman';font-size:13.28px;font-weight:normal;font-style:normal;color:#000000;left:4px;top:77px;">Auburn-Opelika Metropolitan Statistical Area.</div></div>
CY2021	us-gaap	Basis Of Accounting BasisOfAccounting	<div id="TextBlockContainer1717" style="position:relative;font-family:'Times New Roman';font-size:13.28px;color:#000000;line-height:normal;width:669px;height:231px;display:inline-block;border:inherit;margin-left:-2px;margin-right:-2px;"><div id="a59328" style="position:absolute;font-family:'Times New Roman';font-size:13.28px;font-weight:bold;font-style:normal;color:#000000;left:4px;top:0px;">Basis of Presentation </div><div id="a59331" style="position:absolute;font-family:'Times New Roman';font-size:13.28px;font-weight:normal;font-style:normal;color:#000000;left:4px;top:31px;">The consolidated financial statements include the accounts of the Company and<div style="display:inline-block;width:5px"> </div>its wholly-owned subsidiaries. Significant </div><div id="a59334" style="position:absolute;font-family:'Times New Roman';font-size:13.28px;font-weight:normal;font-style:normal;color:#000000;left:4px;top:46px;">intercompany transactions and accounts are eliminated in consolidation. </div><div id="a59338" style="position:absolute;font-family:'Times New Roman';font-size:13.28px;font-weight:bold;font-style:normal;color:#000000;left:4px;top:77px;">COVID-19 Uncertainty </div><div id="a59343" style="position:absolute;font-family:'Times New Roman';font-size:13.28px;font-weight:normal;font-style:normal;color:#000000;left:4px;top:107px;">COVID-19 has adversely affected, and may continue to adversely affect<div style="display:inline-block;width:5px"> </div>economic activity globally,<div style="display:inline-block;width:5px"> </div>nationally and locally. </div><div id="a59347" style="position:absolute;font-family:'Times New Roman';font-size:13.28px;font-weight:normal;font-style:normal;color:#000000;left:4px;top:123px;">Following the COVID-19 outbreak in December 2019 and January 2020,<div style="display:inline-block;width:5px"> </div>market interest rates declined significantly. The </div><div id="a59350" style="position:absolute;font-family:'Times New Roman';font-size:13.28px;font-weight:normal;font-style:normal;color:#000000;left:4px;top:138px;">federal banking agencies encouraged financial institutions to prudently<div style="display:inline-block;width:5px"> </div>work with borrowers and passed legislation to </div><div id="a59352" style="position:absolute;font-family:'Times New Roman';font-size:13.28px;font-weight:normal;font-style:normal;color:#000000;left:4px;top:153px;">provide relief from reporting loan classifications due to modifications related to the COVID<div style="display:inline-block;width:2px"> </div>-19 outbreak. The spread of </div><div id="a59355" style="position:absolute;font-family:'Times New Roman';font-size:13.28px;font-weight:normal;font-style:normal;color:#000000;left:4px;top:169px;">COVID-19 has caused us to modify our business practices, including employee travel,<div style="display:inline-block;width:5px"> </div>employee work locations, and </div><div id="a59359" style="position:absolute;font-family:'Times New Roman';font-size:13.28px;font-weight:normal;font-style:normal;color:#000000;left:4px;top:184px;">cancellation of physical participation in meetings, events and conferences. The rapid<div style="display:inline-block;width:5px"> </div>development and fluidity of this </div><div id="a59360" style="position:absolute;font-family:'Times New Roman';font-size:13.28px;font-weight:normal;font-style:normal;color:#000000;left:4px;top:199px;">situation precludes any predication as to the ultimate impact of the COVID-19 outbreak.<div style="display:inline-block;width:5px"> </div>Nevertheless, the outbreak </div><div id="a59365" style="position:absolute;font-family:'Times New Roman';font-size:13.28px;font-weight:normal;font-style:normal;color:#000000;left:4px;top:215px;">presents uncertainty and risk with respect to the Company,<div style="display:inline-block;width:5px"> </div>its performance, and its financial results.</div></div>
CY2021	us-gaap	Use Of Estimates UseOfEstimates	<div id="TextBlockContainer1721" style="position:relative;font-family:'Times New Roman';font-size:13.28px;color:#000000;line-height:normal;width:669px;height:123px;display:inline-block;border:inherit;margin-left:-2px;margin-right:-2px;"><div id="a59428" style="position:absolute;font-family:'Times New Roman';font-size:13.28px;font-weight:bold;font-style:normal;color:#000000;left:4px;top:0px;">Use of Estimates </div><div id="a59431" style="position:absolute;font-family:'Times New Roman';font-size:13.28px;font-weight:normal;font-style:normal;color:#000000;left:4px;top:31px;">The preparation of financial statements in conformity with U.S. generally accepted<div style="display:inline-block;width:5px"> </div>accounting principles requires </div><div id="a59433" style="position:absolute;font-family:'Times New Roman';font-size:13.28px;font-weight:normal;font-style:normal;color:#000000;left:4px;top:46px;">management to make estimates and assumptions that affect the reported<div style="display:inline-block;width:5px"> </div>amounts of assets and liabilities and the disclosure </div><div id="a59434" style="position:absolute;font-family:'Times New Roman';font-size:13.28px;font-weight:normal;font-style:normal;color:#000000;left:4px;top:61px;">of contingent assets and liabilities as of the balance sheet date and the reported<div style="display:inline-block;width:5px"> </div>amounts of income and expense during the </div><div id="a59436" style="position:absolute;font-family:'Times New Roman';font-size:13.28px;font-weight:normal;font-style:normal;color:#000000;left:4px;top:77px;">reporting period. Actual results could differ from those estimates. Material estimates<div style="display:inline-block;width:5px"> </div>that are particularly susceptible to </div><div id="a59437" style="position:absolute;font-family:'Times New Roman';font-size:13.28px;font-weight:normal;font-style:normal;color:#000000;left:4px;top:92px;">significant change in the near term include the determination of the allowance<div style="display:inline-block;width:5px"> </div>for loan losses, fair value measurements, </div><div id="a59438" style="position:absolute;font-family:'Times New Roman';font-size:13.28px;font-weight:normal;font-style:normal;color:#000000;left:4px;top:107px;">valuation of other real estate owned, and valuation of deferred tax assets.</div></div>
CY2019Q4	aubn	Change In Accounting Estimate Carrying Value Property Plant And Equipment ChangeInAccountingEstimateCarryingValuePropertyPlantAndEquipment	500000	USD
CY2021	aubn	Change In Accounting Estitmate After Tax Impact Net Earnings ChangeInAccountingEstitmateAfterTaxImpactNetEarnings	29000	USD
CY2021	aubn	Accounting Estimate Change Effect Of Change On Basic And Diluted Eanrings Per Share AccountingEstimateChangeEffectOfChangeOnBasicAndDilutedEanringsPerShare	0.01
CY2020	aubn	Change In Accounting Estitmate After Tax Impact Net Earnings ChangeInAccountingEstitmateAfterTaxImpactNetEarnings	342000	USD
CY2020	aubn	Accounting Estimate Change Effect Of Change On Basic And Diluted Eanrings Per Share AccountingEstimateChangeEffectOfChangeOnBasicAndDilutedEanringsPerShare	0.10
CY2021	us-gaap	Reclassifications Reclassifications	<div id="TextBlockContainer1727" style="position:relative;font-family:'Times New Roman';font-size:13.28px;color:#000000;line-height:normal;width:652px;height:58px;display:inline-block;border:inherit;margin-left:-2px;margin-right:-2px;"><div id="a59486" style="position:absolute;font-family:'Times New Roman';font-size:13.28px;font-weight:bold;font-style:normal;color:#000000;left:4px;top:0px;">Reclassifications<div style="display:inline-block;width:4px"> </div></div><div id="a59489" style="position:absolute;font-family:'Times New Roman';font-size:13.28px;font-weight:normal;font-style:normal;color:#000000;left:4px;top:28px;">Certain amounts reported in the prior period have been reclassified to conform to the<div style="display:inline-block;width:5px"> </div>current-period presentation. These </div><div id="a59493" style="position:absolute;font-family:'Times New Roman';font-size:13.28px;font-weight:normal;font-style:normal;color:#000000;left:4px;top:43px;">reclassifications had no impact on the Company’s<div style="display:inline-block;width:5px"> </div>previously reported net earnings or total stockholders’ equity.</div></div>
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	5177000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	50931000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	121400000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	244383000	USD
CY2021Q4	aubn	Available For Sale Securities Fair Value AvailableForSaleSecuritiesFairValue	421891000	USD
CY2021Q4	aubn	Available For Sale Securities Gross Unrealized Gains2 AvailableForSaleSecuritiesGrossUnrealizedGains2	6218000	USD
CY2021Q4	aubn	Available For Sale Securities Gross Unrealized Losses AvailableForSaleSecuritiesGrossUnrealizedLosses	5029000	USD
CY2021Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	420702000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	5525000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	26620000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	84274000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	218758000	USD
CY2020Q4	aubn	Available For Sale Securities Fair Value AvailableForSaleSecuritiesFairValue	335177000	USD
CY2020Q4	aubn	Available For Sale Securities Gross Unrealized Gains2 AvailableForSaleSecuritiesGrossUnrealizedGains2	10389000	USD
CY2020Q4	aubn	Available For Sale Securities Gross Unrealized Losses AvailableForSaleSecuritiesGrossUnrealizedLosses	242000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	325030000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Restricted DebtSecuritiesAvailableForSaleRestricted	172300000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Restricted DebtSecuritiesAvailableForSaleRestricted	166900000	USD
CY2021Q4	aubn	Cost Method Securties Investment Carrying Amount CostMethodSecurtiesInvestmentCarryingAmount	1200000	USD
CY2020Q4	aubn	Cost Method Securties Investment Carrying Amount CostMethodSecurtiesInvestmentCarryingAmount	1400000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	187869000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	2689000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	68137000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	2340000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	256006000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	5029000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	59849000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	242000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	0	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	0	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	59849000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	242000	USD
CY2021	us-gaap	Gain On Sale Of Investments GainOnSaleOfInvestments	15000	USD
CY2020	us-gaap	Gain On Sale Of Investments GainOnSaleOfInvestments	184000	USD
CY2021	us-gaap	Loss On Sale Of Investments LossOnSaleOfInvestments	0	USD
CY2020	us-gaap	Loss On Sale Of Investments LossOnSaleOfInvestments	81000	USD
CY2021	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	15000	USD
CY2020	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	103000	USD
CY2021Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	459123000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	462488000	USD
CY2021Q4	aubn	Loans And Leases Receivable Deferred Income1 LoansAndLeasesReceivableDeferredIncome1	759000	USD
CY2020Q4	aubn	Loans And Leases Receivable Deferred Income1 LoansAndLeasesReceivableDeferredIncome1	788000	USD
CY2021Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	458364000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	461700000	USD
CY2021Q4	aubn	Percentage Of Loans Secured By Real Estate PercentageOfLoansSecuredByRealEstate	0.803	pure
CY2021	aubn	Loans Payroll Protection Program Number Of Loans LoansPayrollProtectionProgramNumberOfLoans	138	pure
CY2021Q4	aubn	Payroll Protection Program Loan Balance PayrollProtectionProgramLoanBalance	8100000	USD
CY2020	aubn	Loans Payroll Protection Program Number Of Loans LoansPayrollProtectionProgramNumberOfLoans	265	pure
CY2020Q4	aubn	Payroll Protection Program Loan Balance PayrollProtectionProgramLoanBalance	19000000.0	USD
CY2021Q4	aubn	Financing Receivable Recorded Investment Total Still Accruing FinancingReceivableRecordedInvestmentTotalStillAccruing	458679000	USD
CY2021Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	444000	USD
CY2021Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	459123000	USD
CY2020Q4	aubn	Financing Receivable Recorded Investment Total Still Accruing FinancingReceivableRecordedInvestmentTotalStillAccruing	461954000	USD
CY2020Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	534000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	462488000	USD
CY2021	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	27000	USD
CY2020	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	20000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	4386000	USD
CY2020	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	45000	USD
CY2020	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	177000	USD
CY2020	aubn	Financing Receivable Allowance For Credit Losses Net Chargeoffs Recoveries FinancingReceivableAllowanceForCreditLossesNetChargeoffsRecoveries	132000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	5618000	USD
CY2021	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	294000	USD
CY2021	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	215000	USD
CY2021	aubn	Financing Receivable Allowance For Credit Losses Net Chargeoffs Recoveries FinancingReceivableAllowanceForCreditLossesNetChargeoffsRecoveries	-79000	USD
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	4939000	USD
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	4939000	USD
CY2021Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	458874000	USD
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	0	USD
CY2021Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	249000	USD
CY2021Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	459123000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	5618000	USD
CY2020Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	462169000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	0	USD
CY2020Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	319000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	462488000	USD
CY2020Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	534000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	462488000	USD
CY2021Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	273000	USD
CY2021Q4	aubn	Impaired Financing Receivable Charge Off And Payments Applied ImpairedFinancingReceivableChargeOffAndPaymentsApplied	-24000	USD
CY2021Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	249000	USD
CY2020Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	325000	USD
CY2020Q4	aubn	Impaired Financing Receivable Charge Off And Payments Applied ImpairedFinancingReceivableChargeOffAndPaymentsApplied	-6000	USD
CY2020Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	319000	USD
CY2021	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	295000	USD
CY2021	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	0	USD
CY2020	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	175000	USD
CY2020	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	0	USD
CY2021Q4	aubn	Impaired Financing Receivable Troubled Debt Restructuring Still Accruing ImpairedFinancingReceivableTroubledDebtRestructuringStillAccruing	0	USD
CY2021Q4	aubn	Impaired Financing Receivable Troubled Debt Restructuring Nonaccrual ImpairedFinancingReceivableTroubledDebtRestructuringNonaccrual	249000	USD
CY2021Q4	aubn	Impaired Financing Receivable Trouble Debt Structuring ImpairedFinancingReceivableTroubleDebtStructuring	249000	USD
CY2021Q4	aubn	Impaired Financing Receivable Troubled Debt Restructuring Allowance For Credit Losses ImpairedFinancingReceivableTroubledDebtRestructuringAllowanceForCreditLosses	0	USD
CY2020Q4	aubn	Impaired Financing Receivable Troubled Debt Restructuring Still Accruing ImpairedFinancingReceivableTroubledDebtRestructuringStillAccruing	0	USD
CY2020Q4	aubn	Impaired Financing Receivable Troubled Debt Restructuring Nonaccrual ImpairedFinancingReceivableTroubledDebtRestructuringNonaccrual	319000	USD
CY2020Q4	aubn	Impaired Financing Receivable Trouble Debt Structuring ImpairedFinancingReceivableTroubleDebtStructuring	319000	USD
CY2020Q4	aubn	Impaired Financing Receivable Troubled Debt Restructuring Allowance For Credit Losses ImpairedFinancingReceivableTroubledDebtRestructuringAllowanceForCreditLosses	0	USD
CY2020	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	4	pure
CY2020	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	327000	USD
CY2020	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	327000	USD
CY2021Q4	us-gaap	Land Land	9830000	USD
CY2020Q4	us-gaap	Land Land	9829000	USD
CY2021Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	16124000	USD
CY2020Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	7436000	USD
CY2021Q4	aubn	Furniture Fixtures And Equipment Gross FurnitureFixturesAndEquipmentGross	3096000	USD
CY2020Q4	aubn	Furniture Fixtures And Equipment Gross FurnitureFixturesAndEquipmentGross	2715000	USD
CY2021Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	19277000	USD
CY2020Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	8171000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	48327000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	28151000	USD
CY2021Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	6603000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	5958000	USD
CY2021	us-gaap	Depreciation Depreciation	644000	USD
CY2020	us-gaap	Depreciation Depreciation	905000	USD
CY2020Q4	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	1330000	USD
CY2019Q4	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	1299000	USD
CY2021	aubn	Servicing Asset At Amortized Value Amortization2 ServicingAssetAtAmortizedValueAmortization2	516000	USD
CY2020	aubn	Servicing Asset At Amortized Value Amortization2 ServicingAssetAtAmortizedValueAmortization2	640000	USD
CY2021Q4	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	1309000	USD
CY2020Q4	us-gaap	Valuation Allowance For Impairment Of Recognized Servicing Assets Balance ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance	0	USD
CY2019Q4	us-gaap	Valuation Allowance For Impairment Of Recognized Servicing Assets Balance ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance	0	USD
CY2021Q4	us-gaap	Valuation Allowance For Impairment Of Recognized Servicing Assets Balance ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance	0	USD
CY2020Q4	us-gaap	Servicing Asset At Amortized Value Fair Value ServicingAssetAtAmortizedValueFairValue	1489000	USD
CY2019Q4	us-gaap	Servicing Asset At Amortized Value Fair Value ServicingAssetAtAmortizedValueFairValue	2111000	USD
CY2021Q4	us-gaap	Servicing Asset At Amortized Value Fair Value ServicingAssetAtAmortizedValueFairValue	1908000	USD
CY2021Q4	aubn	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Unpaid Principal Balance ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueUnpaidPrincipalBalance	255310000	USD
CY2020Q4	aubn	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Unpaid Principal Balance ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueUnpaidPrincipalBalance	265964000	USD
CY2021	us-gaap	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Prepayment Speed ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValuePrepaymentSpeed	0.133	pure
CY2020	us-gaap	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Prepayment Speed ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValuePrepaymentSpeed	0.207	pure
CY2021	us-gaap	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Discount Rate ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueDiscountRate	0.095	pure
CY2020	us-gaap	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Discount Rate ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueDiscountRate	0.100	pure
CY2021	aubn	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Weighted Average Coupon Interest Rate ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueWeightedAverageCouponInterestRate	0.034	pure
CY2020	aubn	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Weighted Average Coupon Interest Rate ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueWeightedAverageCouponInterestRate	0.036	pure
CY2021	us-gaap	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Weighted Average Life1 ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueWeightedAverageLife1	P260M
CY2020	us-gaap	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Weighted Average Life1 ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueWeightedAverageLife1	P253M
CY2021	aubn	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Weighted Average Servicing Fee ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueWeightedAverageServicingFee	0.250	pure
CY2020	aubn	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Weighted Average Servicing Fee ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueWeightedAverageServicingFee	0.250	pure
CY2021Q4	aubn	Weighted Average Amortization In Years WeightedAverageAmortizationInYears	5.1	pure
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	241000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	194000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	158000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	129000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	106000	USD
CY2021Q4	aubn	Time Deposit Maturities Next Twelve Months TimeDepositMaturitiesNextTwelveMonths	113771000	USD
CY2021Q4	us-gaap	Time Deposit Maturities Year Two TimeDepositMaturitiesYearTwo	26196000	USD
CY2021Q4	us-gaap	Time Deposit Maturities Year Three TimeDepositMaturitiesYearThree	11709000	USD
CY2021Q4	us-gaap	Time Deposit Maturities Year Four TimeDepositMaturitiesYearFour	3377000	USD
CY2021Q4	us-gaap	Time Deposit Maturities Year Five TimeDepositMaturitiesYearFive	4408000	USD
CY2021Q4	us-gaap	Time Deposit Maturities After Year Five TimeDepositMaturitiesAfterYearFive	189000	USD
CY2021Q4	us-gaap	Time Deposits TimeDeposits	159650000	USD
CY2021Q4	aubn	Time Deposits250000 Or More TimeDeposits250000OrMore	58000000.0	USD
CY2020Q4	aubn	Time Deposits250000 Or More TimeDeposits250000OrMore	55000000.0	USD
CY2021	us-gaap	Short Term Lease Cost ShortTermLeaseCost	200000	USD
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	687000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	788000	USD
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	710000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	811000	USD
CY2021	aubn	Rent Expense Excluded From Right Of Use Asset RentExpenseExcludedFromRightOfUseAsset	100000	USD
CY2021	aubn	Rent Expense Included In Lease Liablilty RentExpenseIncludedInLeaseLiablilty	120000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	120000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	120000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	120000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	111000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	93000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	207000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	771000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	61000	USD
CY2021Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P6Y9M14D
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0306	pure
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	9445000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	9059000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210	pure
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	1902000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210	pure
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	-0.054	pure
CY2020	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	489000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	-0.054	pure
CY2021	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.037	pure
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	345000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.038	pure
CY2021	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	356000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Investment EffectiveIncomeTaxRateReconciliationTaxCreditsInvestment	0.038	pure
CY2021	aubn	Income Tax Reconciliation Bank Owned Life Insurance IncomeTaxReconciliationBankOwnedLifeInsurance	85000	USD
CY2021	aubn	Effective Income Tax Rate Reconciliation Bank Owned Life Insurance EffectiveIncomeTaxRateReconciliationBankOwnedLifeInsurance	-0.009	pure
CY2020	aubn	Income Tax Reconciliation Bank Owned Life Insurance IncomeTaxReconciliationBankOwnedLifeInsurance	152000	USD
CY2020	aubn	Effective Income Tax Rate Reconciliation Bank Owned Life Insurance EffectiveIncomeTaxRateReconciliationBankOwnedLifeInsurance	-0.017	pure
CY2021	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	26000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.003	pure
CY2020	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-1000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0	pure
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1406000	USD
CY2021	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.149	pure
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1605000	USD
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.177	pure
CY2021Q4	aubn	Deferred Tax Asset Allowance For Loan Loss DeferredTaxAssetAllowanceForLoanLoss	1240000	USD
CY2020Q4	aubn	Deferred Tax Asset Allowance For Loan Loss DeferredTaxAssetAllowanceForLoanLoss	1411000	USD
CY2021Q4	aubn	Deferred Tax Asset Bonus DeferredTaxAssetBonus	192000	USD
CY2020Q4	aubn	Deferred Tax Asset Bonus DeferredTaxAssetBonus	183000	USD
CY2021Q4	aubn	Deferred Tax Asset Right Of Use Liability DeferredTaxAssetRightOfUseLiability	178000	USD
CY2020Q4	aubn	Deferred Tax Asset Right Of Use Liability DeferredTaxAssetRightOfUseLiability	204000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	77000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	91000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	1687000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	1889000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	200000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	199000	USD
CY2021Q4	aubn	Deferred Tax Liabilities Unrealized Gains On Available For Sale Securities Gross DeferredTaxLiabilitiesUnrealizedGainsOnAvailableForSaleSecuritiesGross	298000	USD
CY2020Q4	aubn	Deferred Tax Liabilities Unrealized Gains On Available For Sale Securities Gross DeferredTaxLiabilitiesUnrealizedGainsOnAvailableForSaleSecuritiesGross	2548000	USD
CY2021Q4	aubn	Deferred Tax Liabilities Originated Mortgage Servicing Rights DeferredTaxLiabilitiesOriginatedMortgageServicingRights	329000	USD
CY2020Q4	aubn	Deferred Tax Liabilities Originated Mortgage Servicing Rights DeferredTaxLiabilitiesOriginatedMortgageServicingRights	334000	USD
CY2021Q4	aubn	Deferred Tax Liabilities Right Of Use Asset DeferredTaxLiabilitiesRightOfUseAsset	173000	USD
CY2020Q4	aubn	Deferred Tax Liabilities Right Of Use Asset DeferredTaxLiabilitiesRightOfUseAsset	198000	USD
CY2021Q4	aubn	Deferred Tax Liabilities New Market Tax Credit DeferredTaxLiabilitiesNewMarketTaxCredit	89000	USD
CY2020Q4	aubn	Deferred Tax Liabilities New Market Tax Credit DeferredTaxLiabilitiesNewMarketTaxCredit	0	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	163000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	147000	USD
CY2021Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	1252000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	3426000	USD
CY2021Q4	aubn	Deferred Tax Assets Liabilities Net1 DeferredTaxAssetsLiabilitiesNet1	435000	USD
CY2020Q4	aubn	Deferred Tax Assets Liabilities Net1 DeferredTaxAssetsLiabilitiesNet1	-1537000	USD
CY2019Q4	aubn	Deferred Tax Assets Liabilities Net1 DeferredTaxAssetsLiabilitiesNet1	-9000	USD
CY2021Q4	aubn	Deferred Tax Assets Liabilities Net1 DeferredTaxAssetsLiabilitiesNet1	435000	USD
CY2020Q4	aubn	Deferred Tax Assets Liabilities Net1 DeferredTaxAssetsLiabilitiesNet1	-1537000	USD
CY2021	us-gaap	Pension Expense PensionExpense	300	USD
CY2021Q4	aubn	Liability Recorded For Standy Letters Of Credit LiabilityRecordedForStandyLettersOfCredit	23000	USD
CY2020Q4	aubn	Liability Recorded For Standy Letters Of Credit LiabilityRecordedForStandyLettersOfCredit	25000	USD
CY2021Q4	aubn	Commitments Construction Contract CommitmentsConstructionContract	30500000	USD
CY2021	aubn	Payments On Construction Contract PaymentsOnConstructionContract	24100000	USD
CY2021Q4	aubn	Balance On Construction Contract Including Retainage BalanceOnConstructionContractIncludingRetainage	6400000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	1236000	USD
CY2021Q4	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	1564000	USD
CY2021Q4	us-gaap	Related Party Deposit Liabilities RelatedPartyDepositLiabilities	19300000	USD
CY2020Q4	us-gaap	Related Party Deposit Liabilities RelatedPartyDepositLiabilities	18700000	USD
CY2021Q4	aubn	Regulatory Capital Dividends Without Approval Of Regulators RegulatoryCapitalDividendsWithoutApprovalOfRegulators	8300000	USD
CY2021Q4	aubn	Regulatory Capital Restricted Investment From Dividends RegulatoryCapitalRestrictedInvestmentFromDividends	92600000	USD

Files In Submission

Name	View Source	Status
0001193125-22-068826-index-headers.html	Edgar Link	pending
0001193125-22-068826-index.html	Edgar Link	pending
0001193125-22-068826.txt	Edgar Link	pending
0001193125-22-068826-xbrl.zip	Edgar Link	pending
aubn-20211231.xsd	Edgar Link	pending
aubn-20211231_cal.xml	Edgar Link	unprocessable
aubn-20211231_def.xml	Edgar Link	unprocessable
aubn-20211231_lab.xml	Edgar Link	unprocessable
aubn-20211231_pre.xml	Edgar Link	unprocessable
d398212d10k.htm	Edgar Link	pending
d398212d10k_htm.xml	Edgar Link	completed
d398212dex211.htm	Edgar Link	pending
d398212dex311.htm	Edgar Link	pending
d398212dex312.htm	Edgar Link	pending
d398212dex321.htm	Edgar Link	pending
d398212dex322.htm	Edgar Link	pending
d398212dex41.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
g398212aubn-20201231p44i0.jpg	Edgar Link	pending
g398212aubn-20201231p77i0.jpg	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
R15.htm	Edgar Link	pending
R16.htm	Edgar Link	pending
R17.htm	Edgar Link	pending
R18.htm	Edgar Link	pending
R19.htm	Edgar Link	pending
R2.htm	Edgar Link	pending
R20.htm	Edgar Link	pending
R21.htm	Edgar Link	pending
R22.htm	Edgar Link	pending
R23.htm	Edgar Link	pending
R24.htm	Edgar Link	pending
R25.htm	Edgar Link	pending
R26.htm	Edgar Link	pending
R27.htm	Edgar Link	pending
R28.htm	Edgar Link	pending
R29.htm	Edgar Link	pending
R3.htm	Edgar Link	pending
R30.htm	Edgar Link	pending
R31.htm	Edgar Link	pending
R32.htm	Edgar Link	pending
R33.htm	Edgar Link	pending
R34.htm	Edgar Link	pending
R35.htm	Edgar Link	pending
R36.htm	Edgar Link	pending
R37.htm	Edgar Link	pending
R38.htm	Edgar Link	pending
R39.htm	Edgar Link	pending
R4.htm	Edgar Link	pending
R40.htm	Edgar Link	pending
R41.htm	Edgar Link	pending
R42.htm	Edgar Link	pending
R43.htm	Edgar Link	pending
R44.htm	Edgar Link	pending
R45.htm	Edgar Link	pending
R46.htm	Edgar Link	pending
R47.htm	Edgar Link	pending
R48.htm	Edgar Link	pending
R49.htm	Edgar Link	pending
R5.htm	Edgar Link	pending
R50.htm	Edgar Link	pending
R51.htm	Edgar Link	pending
R52.htm	Edgar Link	pending
R53.htm	Edgar Link	pending
R54.htm	Edgar Link	pending
R55.htm	Edgar Link	pending
R56.htm	Edgar Link	pending
R57.htm	Edgar Link	pending
R58.htm	Edgar Link	pending
R59.htm	Edgar Link	pending
R6.htm	Edgar Link	pending
R60.htm	Edgar Link	pending
R61.htm	Edgar Link	pending
R62.htm	Edgar Link	pending
R63.htm	Edgar Link	pending
R64.htm	Edgar Link	pending
R65.htm	Edgar Link	pending
R66.htm	Edgar Link	pending
R67.htm	Edgar Link	pending
R68.htm	Edgar Link	pending
R69.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R70.htm	Edgar Link	pending
R71.htm	Edgar Link	pending
R72.htm	Edgar Link	pending
R73.htm	Edgar Link	pending
R74.htm	Edgar Link	pending
R75.htm	Edgar Link	pending
R76.htm	Edgar Link	pending
R77.htm	Edgar Link	pending
R78.htm	Edgar Link	pending
R79.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R80.htm	Edgar Link	pending
R81.htm	Edgar Link	pending
R82.htm	Edgar Link	pending
R83.htm	Edgar Link	pending
R84.htm	Edgar Link	pending
R85.htm	Edgar Link	pending
R86.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

Create your account

Find Stocks Worth Researching

Deeply Understand Businesses

Value Businesses Intelligently

$AUBN
AUBURN NATIONAL BANCORPORATION, INC Stock $aubn

2021 Form 10-K Financial Statement

#000119312522068826 Filed on March 08, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AUBN AUBURN NATIONAL BANCORPORATION, INC Stock $aubn

2021 Form 10-K Financial Statement

#000119312522068826 Filed on March 08, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AUBN
AUBURN NATIONAL BANCORPORATION, INC Stock $aubn