$ALRS
ALERUS FINANCIAL CORP Stock $alrs

$alrs Overview Financials Valuation SEC Filings Company Website

2024 Q2 Form 10-Q Financial Statement

#000155837024006547 Filed on May 02, 2024

Income Statement

Concept	2024 Q2	2024 Q1
Revenue	$53.02M	$49.04M
YoY Change	31.44%	29.7%
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	$700.0K	$2.100M
YoY Change	-66.81%	-1.41%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$29.02M	$26.82M
YoY Change	60.28%	89.52%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$8.131M	$8.523M
YoY Change	-30.14%	-18.77%
Income Tax	$1.923M	$2.091M
% Of Pretax Income	23.65%	24.53%
Net Earnings	$6.208M	$6.432M
YoY Change	-31.81%	-21.43%
Net Earnings / Revenue	11.71%	13.12%
Basic Earnings Per Share	$0.31	$0.32
Diluted Earnings Per Share	$0.31	$0.32
COMMON SHARES
Basic Shares Outstanding	19.78M	19.74M
Diluted Shares Outstanding	20.05M	19.99M

Balance Sheet

Concept	2024 Q2	2024 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$438.1M	$545.8M
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	$22.20M	$23.27M
YoY Change	-7.23%	2.29%
Goodwill	$46.78M	$46.78M
YoY Change	-0.65%	-0.65%
Intangibles	$14.51M	$15.83M
YoY Change	-26.74%	-25.07%
Long-Term Investments
YoY Change
Other Assets	$35.73M	$34.80M
YoY Change	-18.25%	-16.4%
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$4.359B	$4.338B
YoY Change	13.71%	11.61%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$72.81M	$67.50M
YoY Change	1.86%	4.4%
Deferred Revenue
YoY Change
Short-Term Debt	$555.0M	$555.0M
YoY Change	12.79%	49.14%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$427.8M	$622.5M
YoY Change	-24.09%	42.51%
LONG-TERM LIABILITIES
Long-Term Debt	$59.01M	$58.99M
YoY Change	0.19%	0.19%
Other Long-Term Liabilities
YoY Change
Total Long-Term Liabilities	$59.01M	$58.99M
YoY Change	0.19%	0.19%
TOTAL LIABILITIES
Total Short-Term Liabilities	$427.8M	$622.5M
Total Long-Term Liabilities	$59.01M	$58.99M
Total Liabilities	$3.985B	$3.966B
YoY Change	14.68%	12.44%
SHAREHOLDERS EQUITY
Retained Earnings	$277.6M	$275.4M
YoY Change	-2.88%	-1.84%
Common Stock	$19.78M	$19.78M
YoY Change	-0.69%	-1.45%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$373.2M	$371.6M
YoY Change
Total Liabilities & Shareholders Equity	$4.359B	$4.338B
YoY Change	13.71%	11.61%

Cashflow Statement

Concept	2024 Q2	2024 Q1
OPERATING ACTIVITIES
Net Income	$6.208M	$6.432M
YoY Change	-31.81%	-21.43%
Depreciation, Depletion And Amortization	$700.0K	$2.100M
YoY Change	-66.81%	-1.41%
Cash From Operating Activities	-$11.49M	$11.99M
YoY Change	-199.41%	2594.16%
INVESTING ACTIVITIES
Capital Expenditures	$3.685M	$881.0K
YoY Change	2133.33%	-4.55%
Acquisitions
YoY Change
Other Investing Activities	-$102.3M	-$21.51M
YoY Change	307.02%	12.25%
Cash From Investing Activities	-$106.0M	-$22.39M
YoY Change	318.93%	11.48%
FINANCING ACTIVITIES
Cash Dividend Paid		$3.757M
YoY Change		3.78%
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	9.841M	426.3M
YoY Change	-114.92%	299.97%
NET CHANGE
Cash From Operating Activities	-11.49M	11.99M
Cash From Investing Activities	-106.0M	-22.39M
Cash From Financing Activities	9.841M	426.3M
Net Change In Cash	-107.6M	415.9M
YoY Change	35.03%	378.36%
FREE CASH FLOW
Cash From Operating Activities	-$11.49M	$11.99M
Capital Expenditures	$3.685M	$881.0K
Free Cash Flow	-$15.17M	$11.11M
YoY Change	-233.2%	-2423.85%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value
CY2024Q1	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2023Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2024Q1	dei	Entity Central Index Key EntityCentralIndexKey	0000903419
CY2024Q1	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2024Q1	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2024
CY2024Q1	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q1
CY2024Q1	dei	Amendment Flag AmendmentFlag	false
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CY2024Q1	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0
CY2023Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0
CY2024Q1	us-gaap	Preferred Stock Value PreferredStockValue
CY2023Q4	us-gaap	Preferred Stock Value PreferredStockValue
CY2024Q1	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	19776786
CY2023Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	19734077
CY2024Q1	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Allowance For Credit Loss Recovery DebtSecuritiesHeldToMaturityExcludingAccruedInterestAllowanceForCreditLossRecovery	0
CY2024Q1	dei	Document Type DocumentType	10-Q
CY2024Q1	dei	Document Quarterly Report DocumentQuarterlyReport	true
CY2024Q1	dei	Document Period End Date DocumentPeriodEndDate	2024-03-31
CY2024Q1	dei	Document Transition Report DocumentTransitionReport	false
CY2024Q1	dei	Entity File Number EntityFileNumber	001-39036
CY2024Q1	dei	Entity Registrant Name EntityRegistrantName	ALERUS FINANCIAL CORPORATION
CY2024Q1	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2024Q1	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	45-0375407
CY2024Q1	dei	Entity Address Address Line1 EntityAddressAddressLine1	401 Demers Avenue
CY2024Q1	dei	Entity Address City Or Town EntityAddressCityOrTown	Grand Forks
CY2024Q1	dei	Entity Address State Or Province EntityAddressStateOrProvince	ND
CY2024Q1	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	58201
CY2024Q1	dei	City Area Code CityAreaCode	701
CY2024Q1	dei	Local Phone Number LocalPhoneNumber	795-3200
CY2024Q1	dei	Security12b Title Security12bTitle	Common Stock, par value $1.00 per share
CY2024Q1	dei	Trading Symbol TradingSymbol	ALRS
CY2024Q1	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2024Q1	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2024Q1	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2024Q1	dei	Entity Filer Category EntityFilerCategory	Accelerated Filer
CY2024Q1	dei	Entity Small Business EntitySmallBusiness	false
CY2024Q1	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	true
CY2024Q1	dei	Entity Ex Transition Period EntityExTransitionPeriod	false
CY2024Q1	dei	Entity Shell Company EntityShellCompany	false
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CY2024Q1	us-gaap	Long Term Debt LongTermDebt	58985000
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CY2024Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	5420000
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	5751000
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CY2024Q1	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	33396000
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CY2024Q1	us-gaap	Goodwill Goodwill	46783000
CY2023Q4	us-gaap	Goodwill Goodwill	46783000
CY2024Q1	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	15834000
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CY2024Q1	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	34796000
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CY2023Q1	us-gaap	Noninterest Expense NoninterestExpense	37869000
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CY2024Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.32
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CY2024Q1	us-gaap	Net Income Loss NetIncomeLoss	6432000
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	8186000
CY2024Q1	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent	-3517000
CY2023Q1	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent	4841000
CY2024Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax	684000
CY2024Q1	alrs	Gain Loss On Servicing Rights GainLossOnServicingRights	20000
CY2023Q1	alrs	Gain Loss On Servicing Rights GainLossOnServicingRights	-38000
CY2024Q1	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	449000
CY2023Q1	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	114000
CY2024Q1	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	1071000
CY2023Q1	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-2052000
CY2024Q1	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	4031000
CY2023Q1	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	-8352000
CY2024Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	11989000
CY2023Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-2383000
CY2024Q1	alrs	Proceeds From Sale Of Debt Securities Trading ProceedsFromSaleOfDebtSecuritiesTrading	5502000
CY2024Q1	alrs	Payments To Acquire Debt Securities Trading PaymentsToAcquireDebtSecuritiesTrading	10008000
CY2024Q1	alrs	Other Comprehensive Income Loss Other Derivatives Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossOtherDerivativesGainLossAfterReclassificationBeforeTax	2031000
CY2023Q1	alrs	Other Comprehensive Income Loss Other Derivatives Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossOtherDerivativesGainLossAfterReclassificationBeforeTax	-1725000
CY2024Q1	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-802000
CY2023Q1	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	3116000
CY2024Q1	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-201000
CY2023Q1	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	782000
CY2024Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-601000
CY2023Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	2334000
CY2024Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	5831000
CY2023Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	10520000
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	356872000
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	8186000
CY2023Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	2334000
CY2023Q1	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	361000
CY2023Q1	us-gaap	Dividends Common Stock DividendsCommonStock	3620000
CY2023Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	159000
CY2023Q1	us-gaap	Stockholders Equity StockholdersEquity	359118000
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	369127000
CY2024Q1	us-gaap	Net Income Loss NetIncomeLoss	6432000
CY2024Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-601000
CY2024Q1	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	153000
CY2024Q1	us-gaap	Dividends Common Stock DividendsCommonStock	3763000
CY2024Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	593000
CY2024Q1	us-gaap	Stockholders Equity StockholdersEquity	371635000
CY2024Q1	us-gaap	Profit Loss ProfitLoss	6432000
CY2023Q1	us-gaap	Profit Loss ProfitLoss	8186000
CY2023Q1	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	1459000
CY2023Q1	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	550000
CY2024Q1	us-gaap	Depreciation And Amortization DepreciationAndAmortization	2100000
CY2023Q1	us-gaap	Depreciation And Amortization DepreciationAndAmortization	2130000
CY2024Q1	alrs	Amortization And Accretion Of Premiums Discounts On Investment Securities AmortizationAndAccretionOfPremiumsDiscountsOnInvestmentSecurities	424000
CY2023Q1	alrs	Amortization And Accretion Of Premiums Discounts On Investment Securities AmortizationAndAccretionOfPremiumsDiscountsOnInvestmentSecurities	527000
CY2024Q1	alrs	Operating Lease Right Of Use Asset Amortization Expenses OperatingLeaseRightOfUseAssetAmortizationExpenses	8000
CY2023Q1	alrs	Operating Lease Right Of Use Asset Amortization Expenses OperatingLeaseRightOfUseAssetAmortizationExpenses	43000
CY2024Q1	us-gaap	Share Based Compensation ShareBasedCompensation	593000
CY2023Q1	us-gaap	Share Based Compensation ShareBasedCompensation	159000
CY2024Q1	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	53129000
CY2023Q1	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	56347000
CY2024Q1	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	55362000
CY2023Q1	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	50381000
CY2024Q1	alrs	Increase Decrease In Value Of Bank Owned Life Insurance IncreaseDecreaseInValueOfBankOwnedLifeInsurance	160000
CY2023Q1	alrs	Increase Decrease In Value Of Bank Owned Life Insurance IncreaseDecreaseInValueOfBankOwnedLifeInsurance	224000
CY2024Q1	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	678000
CY2023Q1	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	253000
CY2024Q1	alrs	Gain Loss On Loans Sold GainLossOnLoansSold	1438000
CY2023Q1	alrs	Gain Loss On Loans Sold GainLossOnLoansSold	1344000
CY2023Q1	alrs	Gain Loss On Sale Of Foreclosed Assets GainLossOnSaleOfForeclosedAssets	-8000
CY2023Q1	alrs	Realized Loss Gain On Bank Owned Life Insurance Mortality RealizedLossGainOnBankOwnedLifeInsuranceMortality	1196000
CY2024Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	10818000
CY2023Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	16139000
CY2024Q1	alrs	Proceeds From Sale Or Calls Of Held To Maturity Securities ProceedsFromSaleOrCallsOfHeldToMaturitySecurities	251000
CY2023Q1	alrs	Proceeds From Sale Or Calls Of Held To Maturity Securities ProceedsFromSaleOrCallsOfHeldToMaturitySecurities	126000
CY2024Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	7043000
CY2023Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	7578000
CY2024Q1	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	40223000
CY2023Q1	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	42801000
CY2024Q1	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	-5075000
CY2023Q1	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	225000
CY2023Q1	alrs	Proceeds From Bank Owned Life Insurance Claim ProceedsFromBankOwnedLifeInsuranceClaim	2828000
CY2024Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	881000
CY2023Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	923000
CY2024Q1	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	34000
CY2023Q1	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	22000
CY2024Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-22389000
CY2023Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-17256000
CY2024Q1	alrs	Proceeds From Repayment Of Deposits From Customers ProceedsFromRepaymentOfDepositsFromCustomers	189358000
CY2023Q1	alrs	Proceeds From Repayment Of Deposits From Customers ProceedsFromRepaymentOfDepositsFromCustomers	116494000
CY2024Q1	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	240830000
CY2023Q1	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-5935000
CY2024Q1	alrs	Repayments Of Long Term Debt Net RepaymentsOfLongTermDebtNet	1000
CY2024Q1	us-gaap	Payments Of Dividends PaymentsOfDividends	3757000
CY2023Q1	us-gaap	Payments Of Dividends PaymentsOfDividends	3620000
CY2024Q1	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	153000
CY2023Q1	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	361000
CY2024Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	426279000
CY2023Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	106578000
CY2024Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	415879000
CY2023Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	86939000
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	129893000
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	58242000
CY2024Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	545772000
CY2023Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	145181000
CY2024Q1	us-gaap	Interest Paid Net InterestPaidNet	22339000
CY2023Q1	us-gaap	Interest Paid Net InterestPaidNet	15167000
CY2024Q1	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1000
CY2024Q1	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	3763000
CY2023Q1	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	3620000
CY2024Q1	alrs	Loan Collateral Transferred To Foreclosed Assets LoanCollateralTransferredToForeclosedAssets	-5000
CY2024Q1	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	108000
CY2023Q1	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	257000
CY2024Q1	alrs	Real Estate Owned And Other Assets Liabilities Change In Fair Value Hedge RealEstateOwnedAndOtherAssetsLiabilitiesChangeInFairValueHedge	268000
CY2024Q1	us-gaap	Basis Of Accounting BasisOfAccounting	<p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;text-indent:0pt;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">Alerus Financial Corporation and Subsidiaries</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;text-indent:0pt;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">Notes to Consolidated Financial Statements (Unaudited)</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-weight:bold;margin:0pt 0pt 12pt 0pt;">NOTE 1 Basis of Presentation</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:36pt;margin:0pt 0pt 12pt 0pt;">The accompanying unaudited consolidated interim financial statements and notes thereto of the Company have been prepared in accordance with instructions for Form 10-Q and, therefore, do not include all disclosures required by accounting principles generally accepted in the United States of America, or GAAP, for complete presentation of financial statements. In the opinion of management, the consolidated financial statements contain all adjustments (consisting only of normal recurring accruals) necessary to present fairly the consolidated balance sheets of Alerus Financial Corporation, or the Company, as of March 31, 2024 and December 31, 2023, the consolidated statements of income for the three months ended March 31, 2024 and 2023, consolidated statements of comprehensive income (loss) for the three months ended March 31, 2024 and 2023, the consolidated statements of changes in stockholders’ equity for the three months ended March 31, 2024 and 2023, and the consolidated statements of cash flows for the three months ended March 31, 2024 and 2023. </p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:36pt;margin:0pt 0pt 12pt 0pt;">The accompanying unaudited consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries. The Company’s principal operating subsidiary is the Bank. Certain items previously reported have been reclassified to conform to the current period’s reporting format. Such reclassifications did not affect net income or stockholders’ equity. The results of operations for the interim periods are not necessarily indicative of the results for the full year or any other period. The Company has also evaluated all subsequent events for potential recognition and disclosure through the date of the filing of this Quarterly Report on Form 10-Q. These interim unaudited financial statements should be read in conjunction with the audited consolidated financial statements and the notes thereto as of and for the year ended December 31, 2023, included in the Company’s Annual Report on Form 10-K filed with the SEC on March 8, 2024.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-weight:bold;margin:0pt 0pt 12pt 0pt;">Emerging Growth Company</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:36pt;margin:0pt 0pt 12pt 0pt;">The Company qualifies as an “emerging growth company” under the Jumpstart Our Business Startups Act of 2012, or the JOBS Act, and may take advantage of certain exemptions from various reporting requirements that are applicable to public companies that are not emerging growth companies, including, but not limited to, not being required to comply with the auditor attestation requirements of Section 404 of the Sarbanes-Oxley Act of 2002, or the Sarbanes-Oxley Act, reduced disclosure obligations regarding executive compensation in periodic reports and proxy statements, and exemptions from the requirements of holding a nonbinding advisory vote on executive compensation and stockholder approval of any golden parachute payments not previously approved. In addition, even if the Company complies with the greater obligations of public companies that are not emerging growth companies, the Company may avail itself of the reduced requirements applicable to emerging growth companies from time to time in the future, so long as the Company is an emerging growth company. The Company will continue to be an emerging growth company until the earliest to occur of: (1) the end of the fiscal year following the fifth anniversary of the date of the first sale of common equity securities under the Company’s Registration Statement on Form S-1, which was declared effective by the U.S. Securities and Exchange Commission, or SEC, on September 12, 2019; (2) the last day of the fiscal year in which the Company has $1.235 billion or more in annual revenues; (3) the date on which the Company is deemed to be a “large accelerated filer” under the Securities Exchange Act of 1934, as amended, or the Exchange Act; or (4) the date on which the Company has, during the previous three-year period, issued publicly or privately, more than $1.0 billion in non-convertible debt securities. Management cannot predict if investors will find the Company’s common stock less attractive because it will rely on the exemptions available to emerging growth companies. If some investors find the Company’s common stock less attractive as a result, there may be a less active trading market for its common stock and the Company’s stock price may be more volatile. The last year the Company qualifies as an emerging growth company is 2024.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:36pt;margin:0pt;">Section 107 of the JOBS Act provides that an emerging growth company can take advantage of the extended transition period provided in Section 7(a)(2)(B) of the Securities Act of 1933 for complying with new or revised accounting standards. As an emerging growth company, the Company can delay the adoption of certain accounting standards until those standards would otherwise apply to private companies. The Company elected to take advantage of the benefits of this extended transition period.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:36pt;margin:0pt;"><span style="font-size:1pt;margin-bottom:12pt;visibility:hidden;"></span></p>
CY2024Q1	us-gaap	Trading Securities Debt TradingSecuritiesDebt	4600000
CY2023Q4	us-gaap	Trading Securities Debt TradingSecuritiesDebt	0
CY2024Q1	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	573733000
CY2024Q1	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	2000
CY2024Q1	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	101463000
CY2024Q1	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	472272000
CY2024Q1	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss	292139000
CY2024Q1	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	42332000
CY2024Q1	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	207000
CY2024Q1	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	249807000
CY2024Q1	alrs	Available For Sale And Held To Maturity Amortized Cost AvailableForSaleAndHeldToMaturityAmortizedCost	865872000
CY2024Q1	alrs	Available For Sale And Held To Maturity Unrealized Gains AvailableForSaleAndHeldToMaturityUnrealizedGains	2000
CY2024Q1	alrs	Available For Sale And Held To Maturity Unrealized Losses AvailableForSaleAndHeldToMaturityUnrealizedLosses	143795000
CY2024Q1	us-gaap	Debt Securities Available For Sale And Held To Maturity Allowance For Credit Loss DebtSecuritiesAvailableForSaleAndHeldToMaturityAllowanceForCreditLoss	207000
CY2024Q1	alrs	Available For Sale And Held To Maturity Fair Value AvailableForSaleAndHeldToMaturityFairValue	722079000
CY2023Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	584754000
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	5000
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	98023000
CY2023Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	486736000
CY2023Q4	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss	299728000
CY2023Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	41111000
CY2023Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	213000
CY2023Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	258617000
CY2023Q4	alrs	Available For Sale And Held To Maturity Amortized Cost AvailableForSaleAndHeldToMaturityAmortizedCost	884482000
CY2023Q4	alrs	Available For Sale And Held To Maturity Unrealized Gains AvailableForSaleAndHeldToMaturityUnrealizedGains	5000
CY2023Q4	alrs	Available For Sale And Held To Maturity Unrealized Losses AvailableForSaleAndHeldToMaturityUnrealizedLosses	139134000
CY2023Q4	us-gaap	Debt Securities Available For Sale And Held To Maturity Allowance For Credit Loss DebtSecuritiesAvailableForSaleAndHeldToMaturityAllowanceForCreditLoss	213000
CY2023Q4	alrs	Available For Sale And Held To Maturity Fair Value AvailableForSaleAndHeldToMaturityFairValue	745353000
CY2024Q1	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	207000
CY2023Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	213000
CY2024Q1	us-gaap	Debt Securities Available For Sale Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAccruedInterestAfterAllowanceForCreditLoss	1600000
CY2024Q1	us-gaap	Debt Securities Held To Maturity Accrued Interest After Allowance For Credit Loss DebtSecuritiesHeldToMaturityAccruedInterestAfterAllowanceForCreditLoss	1000000.0
CY2023Q4	us-gaap	Debt Securities Available For Sale Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAccruedInterestAfterAllowanceForCreditLoss	1500000
CY2023Q4	us-gaap	Debt Securities Held To Maturity Accrued Interest After Allowance For Credit Loss DebtSecuritiesHeldToMaturityAccruedInterestAfterAllowanceForCreditLoss	1400000
CY2023Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0
CY2024Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0
CY2023Q1	us-gaap	Proceeds From Sale Of Held To Maturity Securities ProceedsFromSaleOfHeldToMaturitySecurities	0
CY2024Q1	us-gaap	Proceeds From Sale Of Held To Maturity Securities ProceedsFromSaleOfHeldToMaturitySecurities	0
CY2024Q1	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	128
CY2024Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	3000
CY2024Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	489000
CY2024Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	101460000
CY2024Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	471356000
CY2024Q1	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	101463000
CY2024Q1	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	471845000
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	129
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	3000
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	532000
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	98020000
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	485527000
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	98023000
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	486059000
CY2024Q1	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	207000
CY2023Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	213000
CY2024Q1	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Allowance For Credit Loss Writeoff DebtSecuritiesHeldToMaturityExcludingAccruedInterestAllowanceForCreditLossWriteoff	0
CY2024Q1	alrs	Held To Maturity Excluding Accrued Interest Past Due HeldToMaturityExcludingAccruedInterestPastDue	0
CY2023Q4	alrs	Held To Maturity Excluding Accrued Interest Past Due HeldToMaturityExcludingAccruedInterestPastDue	0
CY2024Q1	alrs	Debt Securities Held To Maturity Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss Maturity Allocated And Single Maturity Date Rolling Within One Year DebtSecuritiesHeldToMaturityAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateRollingWithinOneYear	8161000
CY2024Q1	us-gaap	Held To Maturity Securities Debt Maturities Next Rolling Twelve Months Fair Value HeldToMaturitySecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue	7974000
CY2024Q1	alrs	Debt Securities Held To Maturity Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss Maturity Allocated And Single Maturity Date Rolling After One Through Five Years DebtSecuritiesHeldToMaturityAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateRollingAfterOneThroughFiveYears	47376000
CY2024Q1	us-gaap	Held To Maturity Securities Debt Maturities Rolling Year Two Through Five Fair Value HeldToMaturitySecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue	43614000
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Two Through Five Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCostBasis	473000
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Two Through Five Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue	470000
CY2024Q1	alrs	Debt Securities Held To Maturity Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss Maturity Allocated And Single Maturity Date Rolling After5 Through10 Years DebtSecuritiesHeldToMaturityAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateRollingAfter5Through10Years	57248000
CY2024Q1	us-gaap	Held To Maturity Securities Debt Maturities Rolling Year Six Through Ten Fair Value HeldToMaturitySecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue	49662000
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Six Through Ten Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCostBasis	59467000
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Six Through Ten Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue	50524000
CY2024Q1	alrs	Debt Securities Held To Maturity Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss Maturity Allocated And Single Maturity Date Rolling After10 Years DebtSecuritiesHeldToMaturityAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateRollingAfter10Years	12186000
CY2024Q1	us-gaap	Held To Maturity Securities Debt Maturities Rolling After Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesRollingAfterTenYearsFairValue	10736000
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities Rolling After Year Ten Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenAmortizedCostBasis	384000
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	31146000
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities Rolling After Year Ten Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue	385000
CY2024Q1	alrs	Debt Securities Held To Maturity Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss Maturity Allocated And Single Maturity Date Total DebtSecuritiesHeldToMaturityAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateTotal	124971000
CY2024Q1	us-gaap	Held To Maturity Securities Debt Maturities Single Maturity Date Fair Value HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateFairValue	111986000
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis	60324000
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate	51379000
CY2024Q1	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss	292139000
CY2024Q1	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	249807000
CY2024Q1	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss	573733000
CY2024Q1	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	472272000
CY2024Q1	us-gaap	Debt Securities Available For Sale Restricted DebtSecuritiesAvailableForSaleRestricted	559100000
CY2023Q4	us-gaap	Debt Securities Available For Sale Restricted DebtSecuritiesAvailableForSaleRestricted	250000000.0
CY2024Q1	us-gaap	Federal Reserve Bank Stock FederalReserveBankStock	4623000
CY2023Q4	us-gaap	Federal Reserve Bank Stock FederalReserveBankStock	4623000
CY2024Q1	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	11491000
CY2023Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	16566000
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	2799475000
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	2759583000
CY2024Q1	alrs	Deferred Loan Fees And Costs DeferredLoanFeesAndCosts	46000000
CY2023Q4	alrs	Deferred Loan Fees And Costs DeferredLoanFeesAndCosts	248000000
CY2024Q1	us-gaap	Financing Receivable Accrued Interest After Allowance For Credit Loss FinancingReceivableAccruedInterestAfterAllowanceForCreditLoss	12300000
CY2023Q4	us-gaap	Financing Receivable Accrued Interest After Allowance For Credit Loss FinancingReceivableAccruedInterestAfterAllowanceForCreditLoss	12200000
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	35843000
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	799000
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	205000
CY2024Q1	us-gaap	Allowance For Doubtful Accounts Receivable Recoveries AllowanceForDoubtfulAccountsReceivableRecoveries	147000
CY2024Q1	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	36584000
CY2024Q1	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	-793000
CY2024Q1	us-gaap	Debt Securities Held To Maturity Credit Loss Expense Reversal DebtSecuritiesHeldToMaturityCreditLossExpenseReversal	-6000
CY2024Q1	alrs	Loans And Leases Receivables Impaired Troubled Debt Interest Income LoansAndLeasesReceivablesImpairedTroubledDebtInterestIncome	651000
CY2023Q1	alrs	Loans And Leases Receivables Impaired Troubled Debt Interest Income LoansAndLeasesReceivablesImpairedTroubledDebtInterestIncome	38000
CY2024Q1	us-gaap	Financing Receivable Accrued Interest After Allowance For Credit Loss FinancingReceivableAccruedInterestAfterAllowanceForCreditLoss	12300000
CY2023Q4	us-gaap	Financing Receivable Accrued Interest After Allowance For Credit Loss FinancingReceivableAccruedInterestAfterAllowanceForCreditLoss	12200000
CY2023Q1	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	269000
CY2023Q1	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	257000
CY2023Q1	us-gaap	Allowance For Doubtful Accounts Receivable Recoveries AllowanceForDoubtfulAccountsReceivableRecoveries	87000
CY2023Q1	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	35102000
CY2023Q1	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	230000
CY2023Q1	us-gaap	Debt Securities Held To Maturity Credit Loss Expense Reversal DebtSecuritiesHeldToMaturityCreditLossExpenseReversal	51000
CY2024Q1	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	36600000
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Period Increase Decrease FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossPeriodIncreaseDecrease	700000
CY2024Q1	alrs	Percentage Of Increase In Financing Receivable Allowance For Credit Loss Excluding Accrued Interest PercentageOfIncreaseInFinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	0.021
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear	81993000
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear	584389000
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear	667826000
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear	440307000
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear	332543000
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear	452070000
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Revolving FinancingReceivableExcludingAccruedInterestRevolving	240347000
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	2799475000
CY2024Q1	alrs	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year Write Off FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteOff	3000
CY2024Q1	alrs	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year Write Off FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteOff	202000
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	205000
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear	596068000
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear	667908000
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear	452797000
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear	341964000
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear	191673000
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear	273542000
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Revolving FinancingReceivableExcludingAccruedInterestRevolving	235631000
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	2759583000
CY2023	alrs	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year Write Off FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteOff	43000
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff	2000
CY2023	alrs	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year Write Off FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteOff	58000
CY2023	alrs	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year Write Off FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteOff	42000
CY2023	alrs	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year Write Off FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteOff	253000
CY2023	alrs	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year Write Off FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteOff	215000
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	613000
CY2024Q1	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	7345000
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	2799475000
CY2023Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	8596000
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	2759583000
CY2024Q1	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	1214000
CY2024Q1	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	7345000
CY2023Q4	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	991000
CY2023Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	8596000
CY2023Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	139000
CY2022Q4	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	2314000
CY2024Q1	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	2083000
CY2024Q1	alrs	Financing Receivable Amortized Costs Collateral Dependent Loans FinancingReceivableAmortizedCostsCollateralDependentLoans	6682000
CY2024Q1	alrs	Financing Receivable Allowance For Credit Loss Collateral Dependent Loans FinancingReceivableAllowanceForCreditLossCollateralDependentLoans	2649000
CY2023Q4	alrs	Financing Receivable Amortized Costs Collateral Dependent Loans FinancingReceivableAmortizedCostsCollateralDependentLoans	7802000
CY2023Q4	alrs	Financing Receivable Allowance For Credit Loss Collateral Dependent Loans FinancingReceivableAllowanceForCreditLossCollateralDependentLoans	2994000
CY2024Q1	us-gaap	Goodwill Goodwill	46783000
CY2023Q4	us-gaap	Goodwill Goodwill	46783000
CY2024Q1	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0
CY2024Q1	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	49015000
CY2024Q1	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	33181000
CY2024Q1	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	15834000
CY2023Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	49015000
CY2023Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	31857000
CY2023Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	17158000
CY2023Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1300000
CY2024Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1300000
CY2024Q1	alrs	Servicing Asset Other ServicingAssetOther	185700000
CY2023Q4	alrs	Servicing Asset Other ServicingAssetOther	190000000.0
CY2023Q4	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	2052000
CY2022Q4	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	2643000
CY2024Q1	us-gaap	Servicing Asset At Amortized Value Additions ServicingAssetAtAmortizedValueAdditions	260000
CY2023Q1	us-gaap	Servicing Asset At Amortized Value Additions ServicingAssetAtAmortizedValueAdditions	261000
CY2024Q1	us-gaap	Servicing Asset At Amortized Value Amortization1 ServicingAssetAtAmortizedValueAmortization1	89000
CY2023Q1	us-gaap	Servicing Asset At Amortized Value Amortization1 ServicingAssetAtAmortizedValueAmortization1	183000
CY2024Q1	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	2223000
CY2023Q1	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	2721000
CY2024Q1	us-gaap	Servicing Asset At Amortized Value Valuation Allowance ServicingAssetAtAmortizedValueValuationAllowance	-240000
CY2023Q1	us-gaap	Servicing Asset At Amortized Value Valuation Allowance ServicingAssetAtAmortizedValueValuationAllowance	-300000
CY2024Q1	alrs	Servicing Asset At Amortized Cost Net Of Valuation Allowance ServicingAssetAtAmortizedCostNetOfValuationAllowance	1983000
CY2023Q1	alrs	Servicing Asset At Amortized Cost Net Of Valuation Allowance ServicingAssetAtAmortizedCostNetOfValuationAllowance	2421000
CY2023Q4	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	2062000
CY2023Q1	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	2236000
CY2024Q1	us-gaap	Servicing Asset At Amortized Value Fair Value ServicingAssetAtAmortizedValueFairValue	2083000
CY2023Q4	us-gaap	Servicing Asset At Amortized Value Fair Value ServicingAssetAtAmortizedValueFairValue	2062000
CY2024Q1	us-gaap	Assumption For Fair Value Of Assets Or Liabilities That Relate To Transferors Continuing Involvement Weighted Average Life1 AssumptionForFairValueOfAssetsOrLiabilitiesThatRelateToTransferorsContinuingInvolvementWeightedAverageLife1	P18Y9M18D
CY2023	us-gaap	Assumption For Fair Value Of Assets Or Liabilities That Relate To Transferors Continuing Involvement Weighted Average Life1 AssumptionForFairValueOfAssetsOrLiabilitiesThatRelateToTransferorsContinuingInvolvementWeightedAverageLife1	P18Y9M18D
CY2024Q1	us-gaap	Assumption For Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Prepayment Speed AssumptionForFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesPrepaymentSpeed	0.062
CY2023	us-gaap	Assumption For Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Prepayment Speed AssumptionForFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesPrepaymentSpeed	0.062
CY2024Q1	us-gaap	Assumption For Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Discount Rate AssumptionForFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesDiscountRate	0.111
CY2023	us-gaap	Assumption For Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Discount Rate AssumptionForFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesDiscountRate	0.111
CY2024Q1	alrs	Number Of Finance Leases NumberOfFinanceLeases	0
CY2024Q1	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	5112000
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	5436000
CY2024Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	5420000
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	5751000
CY2024Q1	alrs	Minimum Number Of Options To Renew Lease MinimumNumberOfOptionsToRenewLease	1
CY2024Q1	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y4M24D
CY2023Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y3M18D
CY2024Q1	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.038
CY2023Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.039
CY2024Q1	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	0.027
CY2023Q1	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	144000
CY2024Q1	us-gaap	Operating Lease Cost OperatingLeaseCost	461000
CY2023Q1	us-gaap	Operating Lease Cost OperatingLeaseCost	581000
CY2024Q1	us-gaap	Variable Lease Cost VariableLeaseCost	266000
CY2023Q1	us-gaap	Variable Lease Cost VariableLeaseCost	225000
CY2024Q1	us-gaap	Short Term Lease Cost ShortTermLeaseCost	36000
CY2023Q1	us-gaap	Short Term Lease Cost ShortTermLeaseCost	43000
CY2024Q1	us-gaap	Sublease Income SubleaseIncome	48000
CY2023Q1	us-gaap	Sublease Income SubleaseIncome	60000
CY2024Q1	us-gaap	Lease Cost LeaseCost	715000
CY2023Q1	us-gaap	Lease Cost LeaseCost	789000
CY2024Q1	us-gaap	Operating Lease Payments OperatingLeasePayments	460000
CY2023Q1	us-gaap	Operating Lease Payments OperatingLeasePayments	479000
CY2024Q1	alrs	Right Of Use Asset Obtained Transferred In Exchange For Operating Lease Liability RightOfUseAssetObtainedTransferredInExchangeForOperatingLeaseLiability	108000
CY2023Q1	alrs	Right Of Use Asset Obtained Transferred In Exchange For Operating Lease Liability RightOfUseAssetObtainedTransferredInExchangeForOperatingLeaseLiability	257000
CY2024Q1	us-gaap	Lessee Operating Lease Liability Payments Due Next Rolling Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths	1641000
CY2024Q1	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Two LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearTwo	1267000
CY2024Q1	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Three LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearThree	1088000
CY2024Q1	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Four LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFour	540000
CY2024Q1	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Five LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFive	335000
CY2024Q1	us-gaap	Lessee Operating Lease Liability Payments Due After Rolling Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterRollingYearFive	1832000
CY2024Q1	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	6703000
CY2024Q1	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	1283000
CY2024Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	5420000
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CY2024Q1	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	413000
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CY2023Q4	alrs	Time Deposits250000 Or More TimeDeposits250000OrMore	121800000
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CY2024Q1	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2023Q1	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	2203000
CY2024Q1	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.048
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CY2023Q1	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.044
CY2024Q1	us-gaap	Income Tax Reconciliation Nondeductible Expense Other IncomeTaxReconciliationNondeductibleExpenseOther	117000
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CY2023Q1	us-gaap	Income Tax Reconciliation Nondeductible Expense Other IncomeTaxReconciliationNondeductibleExpenseOther	-214000
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CY2023Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2306000
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CY2024Q1	alrs	Low Income Housing Tax Credit Gross LowIncomeHousingTaxCreditGross	17906000
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CY2024Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	22219000
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CY2024Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	8523000
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CY2023Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	4754000
CY2023Q1	us-gaap	Assets Assets	3886773000
CY2024Q1	alrs	Number Of Banking Offices NumberOfBankingOffices	14
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CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	8186000
CY2024Q1	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	40000
CY2023Q1	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	57000
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CY2023Q1	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	218000
CY2024Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	19986000
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CY2024Q1	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	0
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CY2023Q4	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	550000
CY2023Q4	us-gaap	Derivative Liability Fair Value After Offset And Deduction Subject To Master Netting Arrangement DerivativeLiabilityFairValueAfterOffsetAndDeductionSubjectToMasterNettingArrangement	8630000
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CY2024Q1	alrs	Common Equity Tier One Capital Required For Capital Adequacy Ratio CommonEquityTierOneCapitalRequiredForCapitalAdequacyRatio	0.0450
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CY2024Q1	us-gaap	Capital Capital	486789000
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CY2024Q1	us-gaap	Capital Required For Capital Adequacy To Risk Weighted Assets CapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.0800
CY2024Q1	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	395997000
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CY2024Q1	us-gaap	Tier One Leverage Capital Required For Capital Adequacy TierOneLeverageCapitalRequiredForCapitalAdequacy	160216000
CY2024Q1	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.0400
CY2023Q4	us-gaap	Common Equity Tier One Capital CommonEquityTierOneCapital	382578000
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CY2023Q4	us-gaap	Common Equity Tier One Capital Required For Capital Adequacy CommonEquityTierOneCapitalRequiredForCapitalAdequacy	145605000
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CY2023Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy TierOneRiskBasedCapitalRequiredForCapitalAdequacy	194139000
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CY2023Q4	us-gaap	Capital Capital	477590000
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CY2023Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	3561000
CY2024Q1	us-gaap	Oci Debt Securities Available For Sale Transfer To Held To Maturity Adjustment From Aoci For Amortization Of Gain Loss Before Tax OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossBeforeTax	74000
CY2024Q1	us-gaap	Oci Debt Securities Available For Sale Transfer To Held To Maturity Adjustment From Aoci For Amortization Of Gain Loss Tax OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossTax	18000
CY2024Q1	us-gaap	Oci Debt Securities Available For Sale Transfer To Held To Maturity Adjustment From Aoci For Amortization Of Gain Loss After Tax OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossAfterTax	56000
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CY2023Q1	us-gaap	Oci Debt Securities Available For Sale Transfer To Held To Maturity Adjustment From Aoci For Amortization Of Gain Loss Tax OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossTax	-22000
CY2023Q1	us-gaap	Oci Debt Securities Available For Sale Transfer To Held To Maturity Adjustment From Aoci For Amortization Of Gain Loss After Tax OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossAfterTax	-65000
CY2024Q1	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent	-3517000
CY2024Q1	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	-882000
CY2024Q1	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-2635000
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CY2024Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	370000
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CY2024Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	66000
CY2024Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	196000
CY2024Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTaxParent	684000
CY2024Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent	510000
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CY2023Q1	alrs	Other Comprehensive Income Loss Other Derivatives Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossOtherDerivativesGainLossBeforeReclassificationAndTax	-1725000
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CY2024Q1	alrs	Other Comprehensive Income Loss Other Derivatives Gain Loss After Reclassification Before Tax Parent OtherComprehensiveIncomeLossOtherDerivativesGainLossAfterReclassificationBeforeTaxParent	2031000
CY2024Q1	alrs	Other Comprehensive Income Loss Other Derivatives Gain Loss After Reclassification Tax Parent OtherComprehensiveIncomeLossOtherDerivativesGainLossAfterReclassificationTaxParent	171000
CY2024Q1	alrs	Other Comprehensive Income Loss Other Derivatives Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossOtherDerivativesGainLossAfterReclassificationAndTaxParent	1860000
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Files In Submission

Name	View Source	Status
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0001558370-24-006547-index.html	Edgar Link	pending
0001558370-24-006547.txt	Edgar Link	pending
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alrs-20240331.xsd	Edgar Link	pending
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alrs-20240331xex31d2.htm	Edgar Link	pending
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$ALRS
ALERUS FINANCIAL CORP Stock $alrs

2024 Q2 Form 10-Q Financial Statement

#000155837024006547 Filed on May 02, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ALRS ALERUS FINANCIAL CORP Stock $alrs

2024 Q2 Form 10-Q Financial Statement

#000155837024006547 Filed on May 02, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ALRS
ALERUS FINANCIAL CORP Stock $alrs