$MBBC
Marathon Bancorp, Inc. /MD/ Stock $mbbc

$mbbc Overview Financials Valuation SEC Filings Company Website

2024 Q3 Form 10-K Financial Statement

#000155837024013026 Filed on September 26, 2024

Income Statement

Concept	2024 Q3	2024 Q2	2024
Revenue	$2.312M		$9.431M
YoY Change	-3.86%		5.04%
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	$70.12K		$244.9K
YoY Change	56.43%		19.46%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense
YoY Change
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$215.5K		-$246.1K
YoY Change	-25.09%		-111.63%
Income Tax	$40.60K		-$59.11K
% Of Pretax Income	18.84%
Net Earnings	$174.9K		-$187.0K
YoY Change	102.92%		-111.18%
Net Earnings / Revenue	7.56%		-1.98%
Basic Earnings Per Share	$0.09		-$0.09
Diluted Earnings Per Share	$0.09		-$0.09
COMMON SHARES
Basic Shares Outstanding	2.135M	2.147M	2.042M
Diluted Shares Outstanding	2.035M		2.042M

Balance Sheet

Concept	2024 Q3	2024 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$15.02M	$10.47M
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	$4.011M	$4.086M
YoY Change	8.29%	91.96%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$216.5M	$219.2M
YoY Change	-8.14%	-8.19%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities
YoY Change
LONG-TERM LIABILITIES
Long-Term Debt
YoY Change
Other Long-Term Liabilities
YoY Change
Total Long-Term Liabilities
YoY Change
TOTAL LIABILITIES
Total Short-Term Liabilities
Total Long-Term Liabilities
Total Liabilities	$184.9M	$187.9M
YoY Change	-9.46%	-9.43%
SHAREHOLDERS EQUITY
Retained Earnings	$25.70M	$25.52M
YoY Change	-0.38%	-0.21%
Common Stock	$7.273M	$7.276M
YoY Change	-0.58%	0.03%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$31.59M	$31.29M
YoY Change
Total Liabilities & Shareholders Equity	$216.5M	$219.2M
YoY Change	-8.14%	-8.19%

Cashflow Statement

Concept	2024 Q3	2024
OPERATING ACTIVITIES
Net Income	$174.9K	-$187.0K
YoY Change	102.92%	-111.18%
Depreciation, Depletion And Amortization	$70.12K	$244.9K
YoY Change	56.43%	19.46%
Cash From Operating Activities	$945.2K	$416.6K
YoY Change	157.78%	-79.06%
INVESTING ACTIVITIES
Capital Expenditures	$23.67K	$2.265M
YoY Change	-98.56%	3365.08%
Acquisitions
YoY Change
Other Investing Activities
YoY Change
Cash From Investing Activities	$7.464M	$17.71M
YoY Change	-592.64%	-222.78%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-3.860M	-19.43M
YoY Change	5.86%	-223.11%
NET CHANGE
Cash From Operating Activities	945.2K	416.6K
Cash From Investing Activities	7.464M	17.71M
Cash From Financing Activities	-3.860M	-19.43M
Net Change In Cash	4.550M	-1.303M
YoY Change	-194.89%	-138.92%
FREE CASH FLOW
Cash From Operating Activities	$945.2K	$416.6K
Capital Expenditures	$23.67K	$2.265M
Free Cash Flow	$921.6K	-$1.848M
YoY Change	-171.94%	-196.08%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value
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CY2024	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2024
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CY2024	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--06-30
CY2024	dei	Document Transition Report DocumentTransitionReport	false
CY2024	dei	Entity File Number EntityFileNumber	000-56269
CY2024	dei	Entity Registrant Name EntityRegistrantName	MARATHON BANCORP, INC.
CY2024	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	MD
CY2024	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	86-2191258
CY2024	dei	Entity Address Address Line1 EntityAddressAddressLine1	500 Scott Street
CY2024	dei	Entity Address City Or Town EntityAddressCityOrTown	Wausau
CY2024	dei	Entity Address State Or Province EntityAddressStateOrProvince	WI
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CY2023	mara	Employee Stock Ownership Plan Esop Amount Of Committed To Be Released Shares In Shares EmployeeStockOwnershipPlanEsopAmountOfCommittedToBeReleasedSharesInShares	3496
CY2023	mara	Employee Stock Ownership Plan Esop Amount Of Committed To Be Released Shares EmployeeStockOwnershipPlanEsopAmountOfCommittedToBeReleasedShares	40127
CY2023	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	130628
CY2023	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-415828
CY2023	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	115405
CY2023	us-gaap	Treasury Stock Retired Cost Method Amount TreasuryStockRetiredCostMethodAmount	1371844
CY2023Q2	us-gaap	Stockholders Equity StockholdersEquity	31279518
CY2024	us-gaap	Net Income Loss NetIncomeLoss	-186994
CY2024	mara	Employee Stock Ownership Plan Esop Amount Of Committed To Be Released Shares In Shares EmployeeStockOwnershipPlanEsopAmountOfCommittedToBeReleasedSharesInShares	3496
CY2024	mara	Employee Stock Ownership Plan Esop Amount Of Committed To Be Released Shares EmployeeStockOwnershipPlanEsopAmountOfCommittedToBeReleasedShares	33936
CY2024	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	159100
CY2024	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	32069
CY2024	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	17082
CY2024	us-gaap	Treasury Stock Retired Cost Method Amount TreasuryStockRetiredCostMethodAmount	156220
CY2024Q2	us-gaap	Stockholders Equity StockholdersEquity	31294784
CY2024	us-gaap	Net Income Loss NetIncomeLoss	-186994
CY2023	us-gaap	Net Income Loss NetIncomeLoss	1672070
CY2024	us-gaap	Depreciation Depreciation	244904
CY2023	us-gaap	Depreciation Depreciation	205013
CY2024	us-gaap	Provision For Other Credit Losses ProvisionForOtherCreditLosses	-190000
CY2024	us-gaap	Real Estate Owned Valuation Allowance Provision1 RealEstateOwnedValuationAllowanceProvision1	937100
CY2024	us-gaap	Amortization Of Deferred Loan Origination Fees Net AmortizationOfDeferredLoanOriginationFeesNet	41552
CY2023	us-gaap	Amortization Of Deferred Loan Origination Fees Net AmortizationOfDeferredLoanOriginationFeesNet	50036
CY2024	us-gaap	Employee Stock Ownership Plan Esop Compensation Expense EmployeeStockOwnershipPlanESOPCompensationExpense	33936
CY2023	us-gaap	Employee Stock Ownership Plan Esop Compensation Expense EmployeeStockOwnershipPlanESOPCompensationExpense	40127
CY2024	us-gaap	Share Based Compensation ShareBasedCompensation	159100
CY2023	us-gaap	Share Based Compensation ShareBasedCompensation	130628
CY2024	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-73654
CY2023	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-101677
CY2024	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	174553
CY2023	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	129520
CY2023	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	24000
CY2023	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	246751
CY2024	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-138356
CY2023	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	249564
CY2023	us-gaap	Increase Decrease In Insurance Settlements Receivable IncreaseDecreaseInInsuranceSettlementsReceivable	261297
CY2024	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	248587
CY2023	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	236420
CY2024	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	-14956
CY2023	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	46795
CY2024	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	4392500
CY2023	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	3868410
CY2024	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	4567053
CY2023	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	3997930
CY2024	us-gaap	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	2406
CY2023	us-gaap	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	-6800
CY2024	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	750
CY2023	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	21880
CY2024	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-243264
CY2023	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	484029
CY2024	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	416553
CY2023	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1989129
CY2024	mara	Net Change Interest Bearing Deposits In Other Financial Institutions NetChangeInterestBearingDepositsInOtherFinancialInstitutions	-3562251
CY2023	mara	Net Change Interest Bearing Deposits In Other Financial Institutions NetChangeInterestBearingDepositsInOtherFinancialInstitutions	1817066
CY2023	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	966834
CY2024	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	2288068
CY2023	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	1037601
CY2024	us-gaap	Proceeds From Sale And Maturity Of Held To Maturity Securities ProceedsFromSaleAndMaturityOfHeldToMaturitySecurities	11594
CY2023	us-gaap	Proceeds From Sale And Maturity Of Held To Maturity Securities ProceedsFromSaleAndMaturityOfHeldToMaturitySecurities	22828
CY2024	us-gaap	Increase Decrease Of Restricted Investments IncreaseDecreaseOfRestrictedInvestments	559140
CY2023	us-gaap	Increase Decrease Of Restricted Investments IncreaseDecreaseOfRestrictedInvestments	447273
CY2024	us-gaap	Payments For Proceeds From Loans Receivable PaymentsForProceedsFromLoansReceivable	-14672675
CY2023	us-gaap	Payments For Proceeds From Loans Receivable PaymentsForProceedsFromLoansReceivable	14121657
CY2024	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	2264879
CY2023	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	65363
CY2024	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	17710569
CY2023	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-14424096
CY2024	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	-24273552
CY2023	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	9153858
CY2024	us-gaap	Proceeds From Federal Home Loan Bank Advances ProceedsFromFederalHomeLoanBankAdvances	5000000
CY2023	us-gaap	Proceeds From Federal Home Loan Bank Advances ProceedsFromFederalHomeLoanBankAdvances	8000000
CY2024	mara	Payments To Repurchase Treasury Stock PaymentsToRepurchaseTreasuryStock	156220
CY2023	mara	Payments To Repurchase Treasury Stock PaymentsToRepurchaseTreasuryStock	1371844
CY2024	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-19429772
CY2023	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	15782014
CY2024	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-1302650
CY2023	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	3347047
CY2023Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	11775088
CY2022Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	8428041
CY2024Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	10472438
CY2023Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	11775088
CY2024	us-gaap	Interest Paid Net InterestPaidNet	3378226
CY2023	us-gaap	Interest Paid Net InterestPaidNet	2234990
CY2024	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	261000
CY2023	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	159000
CY2023	mara	Transfer Of Loans To Foreclosed Assets TransferOfLoansToForeclosedAssets	2087809
CY2024	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	47570
CY2023	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	698837
CY2021Q2	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	1003274
CY2021Q2	us-gaap	Share Price SharePrice	10.00
CY2021Q2	us-gaap	Sale Of Stock Percentage Of Ownership After Transaction SaleOfStockPercentageOfOwnershipAfterTransaction	0.450
CY2024	mara	Number Of Business Facilities NumberOfBusinessFacilities	5
CY2024	us-gaap	Use Of Estimates UseOfEstimates	<p style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-weight:bold;margin:0pt 0pt 12pt 0pt;">Use of Estimates</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:justify;margin:0pt 0pt 12pt 0pt;">In preparing financial statements in conformity with generally accepted accounting principles, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the balance sheet and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant changes in the near term relate to the determination of the allowance for credit losses, valuation of deferred tax assets, and fair value of financial assets and liabilities.</p>
CY2024	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<p style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-weight:bold;margin:0pt 0pt 12pt 0pt;">Concentrations of Credit Risk</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:justify;margin:0pt 0pt 12pt 0pt;">The majority of the Company’s loans and commitments to extend credit have been granted to customers in the Company’s market area. Although the Company’s loan portfolio is diversified, a substantial portion of the Company’s customers’ ability to honor their contracts is dependent upon the local business economy in which the Company operates. The concentration of credit by type of loan is set forth in Note 4 of the notes to consolidated financial statements.</p>
CY2024Q2	us-gaap	Investment Owned Restricted Cost InvestmentOwnedRestrictedCost	1329413
CY2023Q2	us-gaap	Investment Owned Restricted Cost InvestmentOwnedRestrictedCost	770273
CY2023Q2	us-gaap	Loans Held For Sale Fair Value Disclosure LoansHeldForSaleFairValueDisclosure	0
CY2024Q2	us-gaap	Loans Held For Sale Fair Value Disclosure LoansHeldForSaleFairValueDisclosure	0
CY2023Q2	us-gaap	Mortgage Loans In Process Of Foreclosure Amount MortgageLoansInProcessOfForeclosureAmount	0
CY2024Q2	us-gaap	Mortgage Loans In Process Of Foreclosure Amount MortgageLoansInProcessOfForeclosureAmount	0
CY2024Q2	us-gaap	Foreclosed Assets ForeclosedAssets	1397460
CY2023Q2	us-gaap	Foreclosed Assets ForeclosedAssets	2334560
CY2024Q2	us-gaap	Fair Value Disclosure Offbalance Sheet Risks Face Amount Asset FairValueDisclosureOffbalanceSheetRisksFaceAmountAsset	81058000
CY2023Q2	us-gaap	Fair Value Disclosure Offbalance Sheet Risks Face Amount Asset FairValueDisclosureOffbalanceSheetRisksFaceAmountAsset	81849000
CY2023Q2	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0
CY2024Q2	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0
CY2024	us-gaap	Advertising Expense AdvertisingExpense	61234
CY2023	us-gaap	Advertising Expense AdvertisingExpense	87179
CY2024	us-gaap	Net Income Loss NetIncomeLoss	-186994
CY2023	us-gaap	Net Income Loss NetIncomeLoss	1672070
CY2024	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	2119189
CY2023	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	2189017
CY2024	us-gaap	Weighted Average Number Of Shares Employee Stock Ownership Plan Shares Not Committed To Be Released WeightedAverageNumberOfSharesEmployeeStockOwnershipPlanSharesNotCommittedToBeReleased	76909
CY2023	us-gaap	Weighted Average Number Of Shares Employee Stock Ownership Plan Shares Not Committed To Be Released WeightedAverageNumberOfSharesEmployeeStockOwnershipPlanSharesNotCommittedToBeReleased	80405
CY2024	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	2042280
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	2108612
CY2023	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	3897
CY2024	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	2042280
CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	2112509
CY2024	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.09
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.79
CY2024	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.09
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.79
CY2024	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<p style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-weight:bold;margin:0pt 0pt 12pt 0pt;">Reclassifications</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:justify;margin:0pt 0pt 12pt 0pt;">Certain reclassifications of amounts previously reported have been made to the accompanying consolidated financial statements to maintain consistency between periods presented. The reclassification had no impact on net income or equity.</p>
CY2024Q2	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	6606761
CY2023Q2	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	8921715
CY2024Q2	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss	510276
CY2023Q2	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	516089
CY2024Q2	us-gaap	Debt Securities Available For Sale And Held To Maturity DebtSecuritiesAvailableForSaleAndHeldToMaturity	7117037
CY2023Q2	us-gaap	Debt Securities Available For Sale And Held To Maturity DebtSecuritiesAvailableForSaleAndHeldToMaturity	9437804
CY2024Q2	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	7576169
CY2024Q2	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	22754
CY2024Q2	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	992162
CY2024Q2	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	6606761
CY2023Q2	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	9938742
CY2023Q2	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	23628
CY2023Q2	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	1040655
CY2023Q2	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	8921715
CY2024Q2	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	0
CY2024Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	469
CY2024Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	135650
CY2024Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	991692
CY2024Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	6147275
CY2024Q2	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	992162
CY2024Q2	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	6282925
CY2023Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	109618
CY2023Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	1287089
CY2023Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	931037
CY2023Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	7391645
CY2023Q2	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	1040655
CY2023Q2	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	8678734
CY2024Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions	6
CY2024Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions	54
CY2023Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions	15
CY2023Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions	52
CY2024Q2	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	1249737
CY2024Q2	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	1228159
CY2024Q2	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	369653
CY2024Q2	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	366921
CY2024Q2	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	4608804
CY2024Q2	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	3718774
CY2024Q2	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis	6228194
CY2024Q2	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate	5313854
CY2024Q2	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	7576169
CY2024Q2	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	6606761
CY2024Q2	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss	510276
CY2024Q2	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	394081
CY2024Q2	us-gaap	Debt Securities Available For Sale Restricted DebtSecuritiesAvailableForSaleRestricted	223000
CY2023Q2	us-gaap	Debt Securities Available For Sale Restricted DebtSecuritiesAvailableForSaleRestricted	415000
CY2023	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0
CY2024	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0
CY2023	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	24000
CY2024Q2	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss Fee And Loan In Process FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossFeeAndLoanInProcess	185292000
CY2023Q2	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	199936000
CY2024Q2	us-gaap	Financing Receivable Unamortized Loan Fee Cost FinancingReceivableUnamortizedLoanFeeCost	-47000
CY2023Q2	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	63000
CY2024Q2	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest Current FinancingReceivableAllowanceForCreditLossExcludingAccruedInterestCurrent	1797000
CY2023Q2	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	2159000
CY2024Q2	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss Current FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLossCurrent	183448000
CY2023Q2	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	197714000
CY2023Q2	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	2159000
CY2024	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Recovery FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRecovery	3000
CY2024	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	-190000
CY2024Q2	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	1797000
CY2022Q2	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	2195050
CY2023	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	-136753
CY2023	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	100293
CY2023Q2	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	2158590
CY2023Q2	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	2158590
CY2023Q2	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	2158590
CY2023Q2	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	117103
CY2023Q2	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	199818743
CY2023Q2	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	199935846
CY2024	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-190000
CY2024Q2	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear	10217000
CY2024Q2	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear	27247000
CY2024Q2	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear	55445000
CY2024Q2	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear	52652000
CY2024Q2	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear	16346000
CY2024Q2	us-gaap	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear	21824000
CY2024Q2	us-gaap	Financing Receivable Excluding Accrued Interest Revolving FinancingReceivableExcludingAccruedInterestRevolving	1561000
CY2024Q2	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	185292000
CY2024Q2	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	0
CY2023Q2	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	117103
CY2023Q2	us-gaap	Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance	117103
CY2023	us-gaap	Impaired Financing Receivable With No Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment	123307
CY2023	us-gaap	Impaired Financing Receivable With No Related Allowance Interest Income Accrual Method ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeAccrualMethod	6967
CY2024Q2	mara	Number Of Loans Modified NumberOfLoansModified	0
CY2023	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	0
CY2024Q2	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	7398766
CY2023Q2	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	5203823
CY2024Q2	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	3313014
CY2023Q2	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	3075431
CY2024Q2	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	4085752
CY2023Q2	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	2128392
CY2024	us-gaap	Depreciation Depreciation	244904
CY2023	us-gaap	Depreciation Depreciation	205013
CY2024Q2	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	529366
CY2023Q2	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	591982
CY2024Q2	us-gaap	Operating Lease Liability OperatingLeaseLiability	524973
CY2023Q2	us-gaap	Operating Lease Liability OperatingLeaseLiability	585182
CY2024Q2	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P6Y18D
CY2023Q2	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P6Y10M17D
CY2024Q2	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0338
CY2023Q2	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0324
CY2024	us-gaap	Operating Lease Cost OperatingLeaseCost	127712
CY2023	us-gaap	Operating Lease Cost OperatingLeaseCost	127717
CY2024	us-gaap	Short Term Lease Cost ShortTermLeaseCost	38280
CY2023	us-gaap	Short Term Lease Cost ShortTermLeaseCost	38280
CY2024	us-gaap	Lease Cost LeaseCost	165992
CY2023	us-gaap	Lease Cost LeaseCost	165997
CY2024	us-gaap	Operating Lease Payments OperatingLeasePayments	125215
CY2023	us-gaap	Operating Lease Payments OperatingLeasePayments	124090
CY2024Q2	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	120569
CY2024Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	119825
CY2024Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	110555
CY2024Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	44542
CY2024Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	43200
CY2024Q2	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	144000
CY2024Q2	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	582691
CY2024Q2	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	57718
CY2024Q2	us-gaap	Operating Lease Liability OperatingLeaseLiability	524973
CY2023Q2	mara	Real Estate Owned Gross RealEstateOwnedGross	2334560
CY2022Q2	mara	Real Estate Owned Gross RealEstateOwnedGross	0
CY2024	mara	Real Estate Acquired Through Foreclosure Additions Through Loans Transferred RealEstateAcquiredThroughForeclosureAdditionsThroughLoansTransferred	0
CY2023	mara	Real Estate Acquired Through Foreclosure Additions Through Loans Transferred RealEstateAcquiredThroughForeclosureAdditionsThroughLoansTransferred	2087809
CY2024	mara	Real Estate Acquired Through Foreclosure Additions Through Capitalized Expenditures RealEstateAcquiredThroughForeclosureAdditionsThroughCapitalizedExpenditures	0
CY2023	mara	Real Estate Acquired Through Foreclosure Additions Through Capitalized Expenditures RealEstateAcquiredThroughForeclosureAdditionsThroughCapitalizedExpenditures	0
CY2024	mara	Real Estate Acquired Through Foreclosure Reductions Through Direct Write Downs RealEstateAcquiredThroughForeclosureReductionsThroughDirectWriteDowns	0
CY2023	mara	Real Estate Acquired Through Foreclosure Reductions Through Direct Write Downs RealEstateAcquiredThroughForeclosureReductionsThroughDirectWriteDowns	0
CY2024	mara	Real Estate Acquired Through Foreclosure Reductions Through Sales RealEstateAcquiredThroughForeclosureReductionsThroughSales	0
CY2023	mara	Real Estate Acquired Through Foreclosure Reductions Through Sales RealEstateAcquiredThroughForeclosureReductionsThroughSales	0
CY2024	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	0
CY2023	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	246751
CY2024Q2	mara	Real Estate Owned Gross RealEstateOwnedGross	2334560
CY2023Q2	mara	Real Estate Owned Gross RealEstateOwnedGross	2334560
CY2023Q2	us-gaap	Real Estate Owned Valuation Allowance RealEstateOwnedValuationAllowance	0
CY2022Q2	us-gaap	Real Estate Owned Valuation Allowance RealEstateOwnedValuationAllowance	0
CY2024	mara	Real Estate Owned Valuation Allowance Provision Recoveries RealEstateOwnedValuationAllowanceProvisionRecoveries	937100
CY2023	mara	Real Estate Owned Valuation Allowance Provision Recoveries RealEstateOwnedValuationAllowanceProvisionRecoveries	0
CY2024	mara	Real Estate Owned Valuation Allowance Reduction From Sales RealEstateOwnedValuationAllowanceReductionFromSales	0
CY2023	mara	Real Estate Owned Valuation Allowance Reduction From Sales RealEstateOwnedValuationAllowanceReductionFromSales	0
CY2024	mara	Real Estate Owned Valuation Allowance Reduction From Direct Write Downs RealEstateOwnedValuationAllowanceReductionFromDirectWriteDowns	0
CY2023	mara	Real Estate Owned Valuation Allowance Reduction From Direct Write Downs RealEstateOwnedValuationAllowanceReductionFromDirectWriteDowns	0
CY2024	mara	Real Estate Acquired Through Foreclosure Reductions Through Sales RealEstateAcquiredThroughForeclosureReductionsThroughSales	0
CY2023	mara	Real Estate Acquired Through Foreclosure Reductions Through Sales RealEstateAcquiredThroughForeclosureReductionsThroughSales	0
CY2024Q2	us-gaap	Real Estate Owned Valuation Allowance RealEstateOwnedValuationAllowance	937100
CY2023Q2	us-gaap	Real Estate Owned Valuation Allowance RealEstateOwnedValuationAllowance	0
CY2023Q2	mara	Expenses Related To Foreclosed Assets ExpensesRelatedToForeclosedAssets	0
CY2024	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	0
CY2024	us-gaap	Real Estate Owned Valuation Allowance Provision1 RealEstateOwnedValuationAllowanceProvision1	937100
CY2024	mara	Operating Expenses Related To Foreclosed Assets Net Of Rental Income OperatingExpensesRelatedToForeclosedAssetsNetOfRentalIncome	97492
CY2024Q2	mara	Expenses Related To Foreclosed Assets ExpensesRelatedToForeclosedAssets	1034592
CY2023Q2	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	2300000
CY2024Q2	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	1400000
CY2024	us-gaap	Real Estate Owned Valuation Allowance Provision1 RealEstateOwnedValuationAllowanceProvision1	937000
CY2024Q2	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	18045000
CY2024Q2	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	8972785
CY2023Q2	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	8724198
CY2024Q2	us-gaap	Time Deposit Maturities Year One TimeDepositMaturitiesYearOne	44829942
CY2024Q2	us-gaap	Time Deposit Maturities Year Two TimeDepositMaturitiesYearTwo	9606274
CY2024Q2	us-gaap	Time Deposit Maturities Year Three TimeDepositMaturitiesYearThree	11570177
CY2024Q2	us-gaap	Time Deposit Maturities Year Four TimeDepositMaturitiesYearFour	1052040
CY2024Q2	us-gaap	Time Deposit Maturities Year Five TimeDepositMaturitiesYearFive	386414
CY2024Q2	us-gaap	Time Deposit Maturities After Year Five TimeDepositMaturitiesAfterYearFive	272888
CY2024Q2	us-gaap	Time Deposits TimeDeposits	67717735
CY2023Q2	mara	Deposits Certificates Of Deposits DepositsCertificatesOfDeposits	250000
CY2024Q2	mara	Deposits Certificates Of Deposits DepositsCertificatesOfDeposits	250000
CY2024Q2	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	23317115
CY2024Q2	mara	Brokered Deposits BrokeredDeposits	13434000
CY2023Q2	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	38627407
CY2023Q2	mara	Brokered Deposits BrokeredDeposits	22158000
CY2024Q2	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	13000000.0
CY2023Q2	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	8000000.0
CY2024Q2	us-gaap	Federal Funds Purchased FederalFundsPurchased	5000000.0
CY2024	us-gaap	Federal Home Loan Bank Advances Activity For Year Average Balance Of Agreements Outstanding FederalHomeLoanBankAdvancesActivityForYearAverageBalanceOfAgreementsOutstanding	13000000
CY2023	us-gaap	Federal Home Loan Bank Advances Activity For Year Average Balance Of Agreements Outstanding FederalHomeLoanBankAdvancesActivityForYearAverageBalanceOfAgreementsOutstanding	8000000
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Activity For Year Maximum Outstanding At Any Month End FederalHomeLoanBankAdvancesActivityForYearMaximumOutstandingAtAnyMonthEnd	23000000
CY2023Q2	us-gaap	Federal Home Loan Bank Advances Activity For Year Maximum Outstanding At Any Month End FederalHomeLoanBankAdvancesActivityForYearMaximumOutstandingAtAnyMonthEnd	14000000
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Activity For Year Average Interest Rate At Period End FederalHomeLoanBankAdvancesActivityForYearAverageInterestRateAtPeriodEnd	0.0419
CY2023Q2	us-gaap	Federal Home Loan Bank Advances Activity For Year Average Interest Rate At Period End FederalHomeLoanBankAdvancesActivityForYearAverageInterestRateAtPeriodEnd	0.0297
CY2024	us-gaap	Federal Home Loan Bank Advances Activity For Year Average Interest Rate For Year FederalHomeLoanBankAdvancesActivityForYearAverageInterestRateForYear	0.0384
CY2023	us-gaap	Federal Home Loan Bank Advances Activity For Year Average Interest Rate For Year FederalHomeLoanBankAdvancesActivityForYearAverageInterestRateForYear	0.0315
CY2023Q2	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	0
CY2024Q2	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	0
CY2024Q2	us-gaap	Related Party Deposit Liabilities RelatedPartyDepositLiabilities	824439
CY2023Q2	us-gaap	Related Party Deposit Liabilities RelatedPartyDepositLiabilities	1075609
CY2024Q2	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	212557
CY2024Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	448749
CY2023Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	459764
CY2024Q2	mara	Deferred Tax Asset Debt Securities Available For Sale DeferredTaxAssetDebtSecuritiesAvailableForSale	203576
CY2023Q2	mara	Deferred Tax Asset Debt Securities Available For Sale DeferredTaxAssetDebtSecuritiesAvailableForSale	277048
CY2024Q2	mara	Deferred Tax Assets Lease Liability Monetary DeferredTaxAssetsLeaseLiabilityMonetary	144001
CY2023Q2	mara	Deferred Tax Assets Lease Liability Monetary DeferredTaxAssetsLeaseLiabilityMonetary	160516
CY2024Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	6162
CY2023Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	7559
CY2024Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	43792
CY2023Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	45983
CY2024Q2	mara	Deferred Tax Assets Impairment Of Foreclosed Assets Net DeferredTaxAssetsImpairmentOfForeclosedAssetsNet	257047
CY2024Q2	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	21536
CY2023Q2	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	7121
CY2024Q2	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	1337420
CY2023Q2	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	957991
CY2024Q2	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	321355
CY2024Q2	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	1016065
CY2023Q2	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	957991
CY2024Q2	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	62866
CY2023Q2	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	60384
CY2024Q2	us-gaap	Deferred Tax Liabilities Mortgage Servicing Rights DeferredTaxLiabilitiesMortgageServicingRights	213038
CY2023Q2	us-gaap	Deferred Tax Liabilities Mortgage Servicing Rights DeferredTaxLiabilitiesMortgageServicingRights	224419
CY2024Q2	mara	Deferred Tax Liabilities Right Of Use Asset DeferredTaxLiabilitiesRightOfUseAsset	145205
CY2023Q2	mara	Deferred Tax Liabilities Right Of Use Asset DeferredTaxLiabilitiesRightOfUseAsset	162381
CY2024Q2	mara	Deferred Tax Liabilities Deferred Loan Expenses DeferredTaxLiabilitiesDeferredLoanExpenses	14616
CY2023Q2	mara	Deferred Tax Liabilities Deferred Loan Expenses DeferredTaxLiabilitiesDeferredLoanExpenses	23858
CY2023Q2	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	33
CY2024Q2	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	435725
CY2023Q2	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	471075
CY2024Q2	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	580340
CY2023Q2	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	486916
CY2024	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	79248
CY2023	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	195171
CY2024	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-138356
CY2023	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	249564
CY2024	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-59108
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	444735
CY2024	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-59000
CY2024	mara	Decrease In Income Tax Expense Over Prior Year Amount DecreaseInIncomeTaxExpenseOverPriorYearAmount	504000
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	445000
CY2024	mara	Increase Decrease In Income Before Income Taxes Over Prior Year Amount IncreaseDecreaseInIncomeBeforeIncomeTaxesOverPriorYearAmount	2400000
CY2024	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0
CY2024	mara	Effective Income Tax Rate Reconciliation Wisconsin Change In Tax Law Amount EffectiveIncomeTaxRateReconciliationWisconsinChangeInTaxLawAmount	-112000
CY2024Q2	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	321000
CY2024Q2	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	3300000
CY2024	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	0
CY2024	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	0
CY2023	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2024	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2024	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-51681
CY2023	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	444529
CY2024	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	5008
CY2023	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	5365
CY2024	mara	Effective Income Tax Rate Reconciliation Wisconsin Change In Tax Law Amount EffectiveIncomeTaxRateReconciliationWisconsinChangeInTaxLawAmount	-112058
CY2024	mara	Effective Income Tax Rate Reconciliation Earnings On Bank Owned Life Insurance Amount EffectiveIncomeTaxRateReconciliationEarningsOnBankOwnedLifeInsuranceAmount	52245
CY2023	mara	Effective Income Tax Rate Reconciliation Earnings On Bank Owned Life Insurance Amount EffectiveIncomeTaxRateReconciliationEarningsOnBankOwnedLifeInsuranceAmount	104520
CY2024	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-321355
CY2023	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	112009
CY2024	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	23534
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	5664
CY2024	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	321355
CY2024	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-85766
CY2023	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-7582
CY2024	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-59108
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	444735
CY2024	us-gaap	Defined Contribution Plan Maximum Annual Contributions Per Employee Percent DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent	0.15
CY2024	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	68175
CY2023	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	69794
CY2024	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	873970
CY2024	us-gaap	Stock Issued During Period Shares Employee Stock Ownership Plan StockIssuedDuringPeriodSharesEmployeeStockOwnershipPlan	87397
CY2024	us-gaap	Employee Stock Ownership Plan Esop Weighted Average Purchase Price Of Shares Purchased EmployeeStockOwnershipPlanESOPWeightedAveragePurchasePriceOfSharesPurchased	10.00
CY2024Q2	us-gaap	Debt Instrument Interest Rate Stated Percentage DebtInstrumentInterestRateStatedPercentage	0.0325
CY2024	us-gaap	Employee Stock Ownership Plan Esop Compensation Expense EmployeeStockOwnershipPlanESOPCompensationExpense	33936
CY2024Q2	us-gaap	Employee Stock Ownership Plan Esop Number Of Allocated Shares EmployeeStockOwnershipPlanESOPNumberOfAllocatedShares	3496
CY2023	us-gaap	Employee Stock Ownership Plan Esop Compensation Expense EmployeeStockOwnershipPlanESOPCompensationExpense	40127
CY2023Q2	us-gaap	Employee Stock Ownership Plan Esop Number Of Allocated Shares EmployeeStockOwnershipPlanESOPNumberOfAllocatedShares	3496
CY2024Q2	us-gaap	Employee Stock Ownership Plan Esop Number Of Committed To Be Released Shares EmployeeStockOwnershipPlanESOPNumberOfCommittedToBeReleasedShares	75161
CY2024Q2	mara	Employee Stock Ownership Plan Esop Value Of Shares Committed To Be Released EmployeeStockOwnershipPlanEsopValueOfSharesCommittedToBeReleased	675697
CY2024	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Award Requisite Service Period1 ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod1	P3Y
CY2024	mara	Employee Medical Benefit Plan Maximum Claims Per Employee EmployeeMedicalBenefitPlanMaximumClaimsPerEmployee	30000
CY2024	mara	Employee Medical Benefit Plan Aggregate Stop Loss EmployeeMedicalBenefitPlanAggregateStopLoss	1000000
CY2024	us-gaap	Health Care Organization Health Care Costs Gross HealthCareOrganizationHealthCareCostsGross	512595
CY2023	us-gaap	Health Care Organization Health Care Costs Gross HealthCareOrganizationHealthCareCostsGross	599119
CY2024Q2	mara	Employee Medical Benefit Plan Liability EmployeeMedicalBenefitPlanLiability	83557
CY2023Q2	mara	Employee Medical Benefit Plan Liability EmployeeMedicalBenefitPlanLiability	56596
CY2022Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	73194
CY2022Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	11.16
CY2022	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P10Y
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	39330
CY2023	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	8.90
CY2023	mara	Share Based Compensation Arrangement By Share Based Payment Award Options Granted Weighted Average Remaining Contractual Term ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedWeightedAverageRemainingContractualTerm	P10Y
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	7647
CY2023	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	11.16
CY2023	mara	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeited Weighted Average Remaining Contractual Term ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeitedWeightedAverageRemainingContractualTerm	P10Y
CY2023Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	104877
CY2023Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	10.31
CY2023	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P9Y3M29D
CY2023Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	19272
CY2024Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	104877
CY2024Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	10.31
CY2024	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P8Y3M29D
CY2024Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	142337000
CY2024Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	34740
CY2024Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	10.61
CY2024	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P8Y2M19D
CY2024Q2	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	56895
CY2023	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	24000
CY2023	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	6538
CY2024Q2	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	29380000
CY2024Q2	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.1304
CY2024Q2	us-gaap	Tier One Leverage Capital Required For Capital Adequacy TierOneLeverageCapitalRequiredForCapitalAdequacy	18025000
CY2024Q2	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.080
CY2024Q2	us-gaap	Tier One Leverage Capital Required To Be Well Capitalized TierOneLeverageCapitalRequiredToBeWellCapitalized	20278000
CY2024Q2	us-gaap	Tier One Leverage Capital Required To Be Well Capitalized To Average Assets TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets	0.090
CY2023Q2	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	29030000
CY2023Q2	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.1202
CY2023Q2	us-gaap	Tier One Leverage Capital Required For Capital Adequacy TierOneLeverageCapitalRequiredForCapitalAdequacy	19321000
CY2023Q2	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.080
CY2023Q2	us-gaap	Tier One Leverage Capital Required To Be Well Capitalized TierOneLeverageCapitalRequiredToBeWellCapitalized	21736000
CY2023Q2	us-gaap	Tier One Leverage Capital Required To Be Well Capitalized To Average Assets TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets	0.090
CY2024Q2	mara	Net Worth Of Entity NetWorthOfEntity	28955130
CY2024Q2	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest Current FinancingReceivableAllowanceForCreditLossExcludingAccruedInterestCurrent	1797116
CY2024Q2	mara	Net Worth Of Entity Percent Of Total Assets NetWorthOfEntityPercentOfTotalAssets	0.1391
CY2023Q2	mara	Net Worth Of Entity NetWorthOfEntity	28246139
CY2023Q2	mara	Net Worth Of Entity NetWorthOfEntity	28246139
CY2023Q2	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	2158590
CY2023Q2	mara	Net Worth Of Entity Percent Of Total Assets NetWorthOfEntityPercentOfTotalAssets	0.1267
CY2024Q2	mara	Commitments To Grant Loans Percentage Outstanding With Fixed Interest Rate CommitmentsToGrantLoansPercentageOutstandingWithFixedInterestRate	0.19
CY2024Q2	mara	Commitments To Grant Loans Percentage Outstanding With Variable Interest Rate CommitmentsToGrantLoansPercentageOutstandingWithVariableInterestRate	0.81
CY2023Q2	mara	Commitments To Grant Loans Percentage Outstanding With Fixed Interest Rate CommitmentsToGrantLoansPercentageOutstandingWithFixedInterestRate	1
CY2023Q2	mara	Commitments To Grant Loans Percentage Outstanding With Variable Interest Rate CommitmentsToGrantLoansPercentageOutstandingWithVariableInterestRate	0
CY2023Q2	mara	Number Of Investment Securities Measured At Fair Value On Recurring Basis Using Significant Unobservable Inputs NumberOfInvestmentSecuritiesMeasuredAtFairValueOnRecurringBasisUsingSignificantUnobservableInputs	1
CY2024Q2	mara	Number Of Investment Securities Measured At Fair Value On Recurring Basis Using Significant Unobservable Inputs NumberOfInvestmentSecuritiesMeasuredAtFairValueOnRecurringBasisUsingSignificantUnobservableInputs	1
CY2024	mara	Significant Unobservable Input SignificantUnobservableInput	The Level 3 valuation is based on the 5/30 swap curve
CY2024Q2	mara	Significant Unobservable Input Float SignificantUnobservableInputFloat	0.01
CY2022Q2	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	1900000
CY2023	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	-320000
CY2023Q2	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	1580000
CY2024	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	-120000
CY2024Q2	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	1460000
CY2024Q2	ecd	Rule10b51 Arr Adopted Flag Rule10b51ArrAdoptedFlag	false
CY2024Q2	ecd	Rule10b51 Arr Trmntd Flag Rule10b51ArrTrmntdFlag	false
CY2024Q2	ecd	Non Rule10b51 Arr Trmntd Flag NonRule10b51ArrTrmntdFlag	false
CY2024Q2	ecd	Non Rule10b51 Arr Adopted Flag NonRule10b51ArrAdoptedFlag	false

Files In Submission

Name	View Source	Status
0001558370-24-013026-index-headers.html	Edgar Link	pending
0001558370-24-013026-index.html	Edgar Link	pending
0001558370-24-013026.txt	Edgar Link	pending
0001558370-24-013026-xbrl.zip	Edgar Link	pending
Financial_Report.xlsx	Edgar Link	pending
mara-20240630.xsd	Edgar Link	pending
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mara-20240630xex21.htm	Edgar Link	pending
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mara-20240630_def.xml	Edgar Link	unprocessable

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$MBBC
Marathon Bancorp, Inc. /MD/ Stock $mbbc

2024 Q3 Form 10-K Financial Statement

#000155837024013026 Filed on September 26, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MBBC Marathon Bancorp, Inc. /MD/ Stock $mbbc

2024 Q3 Form 10-K Financial Statement

#000155837024013026 Filed on September 26, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MBBC
Marathon Bancorp, Inc. /MD/ Stock $mbbc