$MBCN
MIDDLEFIELD BANC CORP Stock $mbcn

$mbcn Overview Financials Valuation SEC Filings Company Website

2021 Q4 Form 10-K Financial Statement

#000143774922006281 Filed on March 15, 2022

Income Statement

Concept	2021 Q4	2021 Q3	2021
Revenue	$12.81M	$13.45M	$52.34M
YoY Change	-1.21%	-0.44%	-0.58%
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	$620.0K	$600.0K	$1.400M
YoY Change	6.9%	-23.08%	7.69%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$820.0K	$952.0K	$4.065M
YoY Change	-51.65%	-55.68%	-56.05%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$5.864M	$6.378M	$22.70M
YoY Change	98.38%	196.93%	132.8%
Income Tax	$1.027M	$1.174M	$4.065M
% Of Pretax Income	17.51%	18.41%	17.91%
Net Earnings	$4.837M	$5.204M	$18.63M
YoY Change	94.34%	180.84%	123.18%
Net Earnings / Revenue	37.76%	38.7%	35.6%
Basic Earnings Per Share	$0.81	$0.85	$3.01
Diluted Earnings Per Share	$0.81	$0.85	$3.00
COMMON SHARES
Basic Shares Outstanding	5.952M	6.137M	6.187M
Diluted Shares Outstanding	5.975M	6.157M	6.211M

Balance Sheet

Concept	2021 Q4	2021 Q3	2021
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$119.5M	$132.4M
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	$17.27M	$17.51M	$18.10M
YoY Change	-5.79%	-6.04%	-5.24%
Goodwill	$15.07M	$15.07M
YoY Change	0.0%	0.0%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets			$1.700M
YoY Change			54.55%
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$1.331B	$1.366B	$1.331B
YoY Change	-4.38%	0.08%	-4.38%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$6.200M	$6.300M	$200.0K
YoY Change	19.23%	-46.15%	-66.67%
Accrued Expenses			$3.100M
YoY Change			34.78%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$6.200M	$6.300M	$3.300M
YoY Change	785.71%	-46.15%	13.79%
LONG-TERM LIABILITIES
Long-Term Debt	$12.90M	$13.00M	$12.90M
YoY Change	-24.12%	-23.98%	-24.12%
Other Long-Term Liabilities	$6.200M	$6.300M	$2.800M
YoY Change	19.23%	-46.15%	-6.67%
Total Long-Term Liabilities	$19.10M	$19.30M	$15.70M
YoY Change	-13.96%	-32.99%	-21.5%
TOTAL LIABILITIES
Total Short-Term Liabilities	$6.200M	$6.300M	$3.300M
Total Long-Term Liabilities	$19.10M	$19.30M	$15.70M
Total Liabilities	$1.186B	$1.220B	$1.186B
YoY Change	-5.01%	-0.24%	-5.01%
SHAREHOLDERS EQUITY
Retained Earnings	$83.97M	$80.38M
YoY Change	20.69%	18.12%
Common Stock	$87.13M	$87.13M
YoY Change	0.28%	0.3%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$29.23M	$25.06M
YoY Change	72.56%	47.96%
Treasury Stock Shares	$1.442M	$1.275M
Shareholders Equity	$145.3M	$146.1M	$145.3M
YoY Change
Total Liabilities & Shareholders Equity	$1.331B	$1.366B	$1.331B
YoY Change	-4.38%	0.08%	-4.38%

Cashflow Statement

Concept	2021 Q4	2021 Q3	2021
OPERATING ACTIVITIES
Net Income	$4.837M	$5.204M	$18.63M
YoY Change	94.34%	180.84%	123.18%
Depreciation, Depletion And Amortization	$620.0K	$600.0K	$1.400M
YoY Change	6.9%	-23.08%	7.69%
Cash From Operating Activities	$4.140M	$4.810M	$15.42M
YoY Change	-56.14%	55.66%	2.25%
INVESTING ACTIVITIES
Capital Expenditures	-$190.0K	-$260.0K	$605.0K
YoY Change	46.15%	-13.33%	-43.83%
Acquisitions			$0.00
YoY Change
Other Investing Activities	$22.61M	$35.03M	$71.49M
YoY Change	13.68%	-256.73%	-153.25%
Cash From Investing Activities	$22.43M	$34.77M	$70.89M
YoY Change	13.51%	-253.51%	-152.38%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net			$12.29M
YoY Change			931.99%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-39.42M	300.0K	-$79.23M
YoY Change	-230.4%	-97.9%	-140.11%
NET CHANGE
Cash From Operating Activities	4.140M	4.810M	$15.42M
Cash From Investing Activities	22.43M	34.77M	$70.89M
Cash From Financing Activities	-39.42M	300.0K	-$79.23M
Net Change In Cash	-12.85M	39.88M	$7.077M
YoY Change	-121.62%	-852.45%	-90.85%
FREE CASH FLOW
Cash From Operating Activities	$4.140M	$4.810M	$15.42M
Capital Expenditures	-$190.0K	-$260.0K	$605.0K
Free Cash Flow	$4.330M	$5.070M	$14.82M
YoY Change	-54.75%	49.56%	5.8%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2021Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	1441811
CY2020Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	929362
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CY2021	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.69
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
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CY2020	us-gaap	Other Than Temporary Impairment Loss Debt Securities Available For Sale OtherThanTemporaryImpairmentLossDebtSecuritiesAvailableForSale	0	USD
CY2020	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	0	pure
CY2020Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	0	USD
CY2020Q4	us-gaap	Goodwill Goodwill	15100000	USD
CY2021Q4	us-gaap	Line Of Credit LineOfCredit	0	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2021	us-gaap	Open Tax Year OpenTaxYear	2018 2019 2020 2021
CY2021Q4	mbcn	Reserves Required By Federal Reserve Bank ReservesRequiredByFederalReserveBank	0	USD
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CY2020	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	12000	USD
CY2020	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	257000	USD
CY2020	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	1191000	USD
CY2020	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	3834000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	143810000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	18633000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-822000	USD
CY2021	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	94000	USD
CY2021	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	151000	USD
CY2021	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	12291000	USD
CY2021	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	4240000	USD
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	145335000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	18633000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	8349000	USD
CY2021	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	700000	USD
CY2020	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	9840000	USD
CY2021	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	209000	USD
CY2020	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-101000	USD
CY2021	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	1420000	USD
CY2020	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	1342000	USD
CY2021	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	361000	USD
CY2020	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	351000	USD
CY2021	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	313000	USD
CY2020	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	286000	USD
CY2021	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-0	USD
CY2020	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	27000	USD
CY2021	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-506000	USD
CY2020	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-365000	USD
CY2021	us-gaap	Amortization Of Deferred Loan Origination Fees Net AmortizationOfDeferredLoanOriginationFeesNet	4780000	USD
CY2020	us-gaap	Amortization Of Deferred Loan Origination Fees Net AmortizationOfDeferredLoanOriginationFeesNet	2790000	USD
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	321000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	332000	USD
CY2021	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	478000	USD
CY2020	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	144000	USD
CY2021	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	34081000	USD
CY2020	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	42487000	USD
CY2021	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	35148000	USD
CY2020	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	44316000	USD
CY2021	mbcn	Gain Loss On Sales Of Loans Excluding Student Loans Net GainLossOnSalesOfLoansExcludingStudentLoansNet	1240000	USD
CY2020	mbcn	Gain Loss On Sales Of Loans Excluding Student Loans Net GainLossOnSalesOfLoansExcludingStudentLoansNet	1487000	USD
CY2021	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	546000	USD
CY2020	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	427000	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-401000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-1348000	USD
CY2021	mbcn	Gains Losses On Sales Of Other Real Estate Gross GainsLossesOnSalesOfOtherRealEstateGross	43000	USD
CY2020	mbcn	Gains Losses On Sales Of Other Real Estate Gross GainsLossesOnSalesOfOtherRealEstateGross	253000	USD
CY2021	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	-1078000	USD
CY2020	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	1739000	USD
CY2021	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-343000	USD
CY2020	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-337000	USD
CY2021	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	1893000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-551000	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	15422000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	15082000	USD
CY2021	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	11521000	USD
CY2020	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	18170000	USD
CY2021	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	68907000	USD
CY2020	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	24071000	USD
CY2021	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	-127294000	USD
CY2020	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	127874000	USD
CY2021	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	501000	USD
CY2020	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	709000	USD
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	605000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1077000	USD
CY2021	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	USD
CY2020	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	27000	USD
CY2021	us-gaap	Payments To Acquire Federal Home Loan Bank Stock PaymentsToAcquireFederalHomeLoanBankStock	-0	USD
CY2020	us-gaap	Payments To Acquire Federal Home Loan Bank Stock PaymentsToAcquireFederalHomeLoanBankStock	1600000	USD
CY2021	mbcn	Redemption Of Restricted Stock RedemptionOfRestrictedStock	658000	USD
CY2020	mbcn	Redemption Of Restricted Stock RedemptionOfRestrictedStock	391000	USD
CY2021	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	424000	USD
CY2020	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	0	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	70886000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-135325000	USD
CY2021	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	-58590000	USD
CY2020	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	204357000	USD
CY2021	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	0	USD
CY2020	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-5075000	USD
CY2021	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	0	USD
CY2020	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	3952000	USD
CY2021	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	4204000	USD
CY2020	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	674000	USD
CY2021	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	94000	USD
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	12000	USD
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	12291000	USD
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1191000	USD
CY2021	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	4240000	USD
CY2020	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	3834000	USD
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-79231000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	197547000	USD
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	7077000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	77304000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	112417000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	35113000	USD
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	119494000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	112417000	USD
CY2021	us-gaap	Interest Paid Net InterestPaidNet	4408000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	9587000	USD
CY2021	us-gaap	Income Taxes Paid IncomeTaxesPaid	5526000	USD
CY2020	us-gaap	Income Taxes Paid IncomeTaxesPaid	2177000	USD
CY2021	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	63000	USD
CY2020	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	7688000	USD
CY2021	mbcn	Finance Lease Assets Added To Premises And Equipment Noncash Investing Transactions FinanceLeaseAssetsAddedToPremisesAndEquipmentNoncashInvestingTransactions	67000	USD
CY2020	mbcn	Finance Lease Assets Added To Premises And Equipment Noncash Investing Transactions FinanceLeaseAssetsAddedToPremisesAndEquipmentNoncashInvestingTransactions	1010000	USD
CY2021	mbcn	Finance Lease Liabilities Added To Borrowed Funds Noncash Financing Transactions FinanceLeaseLiabilitiesAddedToBorrowedFundsNoncashFinancingTransactions	67000	USD
CY2020	mbcn	Finance Lease Liabilities Added To Borrowed Funds Noncash Financing Transactions FinanceLeaseLiabilitiesAddedToBorrowedFundsNoncashFinancingTransactions	1010000	USD
CY2021Q4	mbcn	Number Of Branches NumberOfBranches	16	pure
CY2021Q4	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	105900000	USD
CY2020Q4	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	92300000	USD
CY2021	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2021Q4	us-gaap	Mortgage Loans In Process Of Foreclosure Amount MortgageLoansInProcessOfForeclosureAmount	1000000.0	USD
CY2020Q4	us-gaap	Mortgage Loans In Process Of Foreclosure Amount MortgageLoansInProcessOfForeclosureAmount	734000	USD
CY2021Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	1441811
CY2021	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	512449
CY2020Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	929362
CY2021	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:justify;margin:0pt;"><b><span style="text-decoration: underline; ">Reclassification of Comparative Amounts</span></b></p> <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"> </p> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:justify;margin:0pt;">Certain comparative amounts for prior years have been reclassified to conform to current-year presentations. Such reclassifications did <em style="font: inherit;">not</em> affect net income or retained earnings.</p> <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"> </p>
CY2021	mbcn	Revenue From Interest Income And Noninterest Income Percent RevenueFromInterestIncomeAndNoninterestIncomePercent	0.909	pure
CY2021	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	209000	USD
CY2020	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-101000	USD
CY2021	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	546000	USD
CY2020	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	427000	USD
CY2021	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	1240000	USD
CY2020	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	1487000	USD
CY2021	us-gaap	Investment Banking Advisory Brokerage And Underwriting Fees And Commissions InvestmentBankingAdvisoryBrokerageAndUnderwritingFeesAndCommissions	727000	USD
CY2020	us-gaap	Investment Banking Advisory Brokerage And Underwriting Fees And Commissions InvestmentBankingAdvisoryBrokerageAndUnderwritingFeesAndCommissions	526000	USD
CY2021	us-gaap	Noninterest Income Other NoninterestIncomeOther	1059000	USD
CY2020	us-gaap	Noninterest Income Other NoninterestIncomeOther	1112000	USD
CY2021	us-gaap	Noninterest Income NoninterestIncome	7206000	USD
CY2020	us-gaap	Noninterest Income NoninterestIncome	5990000	USD
CY2021	mbcn	Gains Losses On Sales Of Other Real Estate Gross GainsLossesOnSalesOfOtherRealEstateGross	43000	USD
CY2020	mbcn	Gains Losses On Sales Of Other Real Estate Gross GainsLossesOnSalesOfOtherRealEstateGross	253000	USD
CY2021	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	7325449
CY2020	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	7302845
CY2021	us-gaap	Weighted Average Number Of Shares Treasury Stock WeightedAverageNumberOfSharesTreasuryStock	1138783
CY2020	us-gaap	Weighted Average Number Of Shares Treasury Stock WeightedAverageNumberOfSharesTreasuryStock	917495
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	6186666
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	6385350
CY2021	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	24410
CY2020	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	19174
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	6211076
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	6404524
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	0
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	12150
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	8.78
CY2021Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	165817000	USD
CY2021Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	4922000	USD
CY2021Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	540000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	170199000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	108937000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	5435000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	12000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	114360000	USD
CY2021Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	818000	USD
CY2020Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	609000	USD
CY2021	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	209000	USD
CY2020	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-101000	USD
CY2021	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	0	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	0	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	0	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	1715000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	1726000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	40962000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	41427000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	123140000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	127046000	USD
CY2021Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	165817000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	170199000	USD
CY2021Q4	us-gaap	Security Owned And Pledged As Collateral Fair Value SecurityOwnedAndPledgedAsCollateralFairValue	77100000	USD
CY2020Q4	us-gaap	Security Owned And Pledged As Collateral Fair Value SecurityOwnedAndPledgedAsCollateralFairValue	71100000	USD
CY2021	mbcn	Proceeds From Sale Of Investment Securities ProceedsFromSaleOfInvestmentSecurities	0	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	33423000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	441000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	2711000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	99000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	36134000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	540000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	6991000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	12000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	0	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	-0	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	6991000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	12000	USD
CY2021Q4	mbcn	Percentage Of Portfolio PercentageOfPortfolio	0.809	pure
CY2021Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	7969000	USD
CY2021Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	973722000	USD
CY2021Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	981691000	USD
CY2020Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	8087000	USD
CY2020Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	1095998000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	1104085000	USD
CY2021Q4	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	3600000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	4400000	USD
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	740000	USD
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	13602000	USD
CY2021Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	14342000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	490000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	12969000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	13459000	USD
CY2021Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	2744000	USD
CY2021Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance	3221000	USD
CY2021Q4	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	5225000	USD
CY2021Q4	us-gaap	Impaired Financing Receivable With Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance	5765000	USD
CY2021Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	740000	USD
CY2021Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	7969000	USD
CY2021Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	8986000	USD
CY2021Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	740000	USD
CY2020Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	3501000	USD
CY2020Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance	4104000	USD
CY2020Q4	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	4586000	USD
CY2020Q4	us-gaap	Impaired Financing Receivable With Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance	4863000	USD
CY2020Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	490000	USD
CY2020Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	8087000	USD
CY2020Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	8967000	USD
CY2020Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	490000	USD
CY2021Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	2600000	USD
CY2020Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	2900000	USD
CY2021	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	150000	USD
CY2020	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	45000	USD
CY2021	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	8573000	USD
CY2021	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	445000	USD
CY2020	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	14297000	USD
CY2020	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	358000	USD
CY2021Q4	mbcn	Financing Receivable Number Of Payment Modifications FinancingReceivableNumberOfPaymentModifications	0	pure
CY2020Q4	mbcn	Financing Receivable Number Of Payment Modifications FinancingReceivableNumberOfPaymentModifications	11	pure
CY2020Q4	mbcn	Financing Receivable Loans Modified Outstanding Amount FinancingReceivableLoansModifiedOutstandingAmount	24500000	USD
CY2021	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2		pure
CY2021	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	826000	USD
CY2021	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	826000	USD
CY2020	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2		pure
CY2020	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	139000	USD
CY2020	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	138000	USD
CY2021	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	0	pure
CY2021	mbcn	Number Of Days Past Due NumberOfDaysPastDue	P90D
CY2021Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	981691000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	1104085000	USD
CY2021Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	981691000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	1104085000	USD
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	4737000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	33581000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	33334000	USD
CY2021Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	16309000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	15001000	USD
CY2021Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	4859000	USD
CY2021Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	0	USD
CY2020Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	7858000	USD
CY2020Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	0	USD
CY2021Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	0	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	13459000	USD
CY2021	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	465000	USD
CY2021	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	648000	USD
CY2021	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	700000	USD
CY2021Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	14342000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	6768000	USD
CY2020	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	3839000	USD
CY2020	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	690000	USD
CY2020	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	9840000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	13459000	USD
CY2021Q4	us-gaap	Land And Land Improvements LandAndLandImprovements	2963000	USD
CY2020Q4	us-gaap	Land And Land Improvements LandAndLandImprovements	2963000	USD
CY2021Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	16531000	USD
CY2020Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	16239000	USD
CY2021Q4	us-gaap	Furniture And Fixtures Gross FurnitureAndFixturesGross	9596000	USD
CY2020Q4	us-gaap	Furniture And Fixtures Gross FurnitureAndFixturesGross	9395000	USD
CY2021Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	4491000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	17272000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	18333000	USD
CY2021	us-gaap	Depreciation Depreciation	1400000	USD
CY2020	us-gaap	Depreciation Depreciation	1300000	USD
CY2021Q4	us-gaap	Goodwill Goodwill	15100000	USD
CY2021Q4	us-gaap	Finite Lived Core Deposits Gross FiniteLivedCoreDepositsGross	1400000	USD
CY2020Q4	us-gaap	Finite Lived Core Deposits Gross FiniteLivedCoreDepositsGross	1700000	USD
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	321000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	332000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	309000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	296000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	281000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	264000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	253000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	1403000	USD
CY2020Q4	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	476000	USD
CY2019Q4	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	390000	USD
CY2021	us-gaap	Servicing Asset At Amortized Value Additions ServicingAssetAtAmortizedValueAdditions	257000	USD
CY2020	us-gaap	Servicing Asset At Amortized Value Additions ServicingAssetAtAmortizedValueAdditions	276000	USD
CY2021	us-gaap	Servicing Asset At Amortized Value Amortization1 ServicingAssetAtAmortizedValueAmortization1	191000	USD
CY2020	us-gaap	Servicing Asset At Amortized Value Amortization1 ServicingAssetAtAmortizedValueAmortization1	190000	USD
CY2021Q4	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	542000	USD
CY2020Q4	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	476000	USD
CY2021Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	4399000	USD
CY2020Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	5057000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	1693000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	1073000	USD
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	872000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	742000	USD
CY2021Q4	us-gaap	Other Assets Miscellaneous OtherAssetsMiscellaneous	3201000	USD
CY2020Q4	us-gaap	Other Assets Miscellaneous OtherAssetsMiscellaneous	1554000	USD
CY2021Q4	us-gaap	Other Assets OtherAssets	14297000	USD
CY2020Q4	us-gaap	Other Assets OtherAssets	13636000	USD
CY2021Q4	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	33400000	USD
CY2020Q4	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	74900000	USD
CY2021Q4	us-gaap	Time Deposit Maturities Year One TimeDepositMaturitiesYearOne	144016000	USD
CY2021Q4	us-gaap	Time Deposit Maturities Year Two TimeDepositMaturitiesYearTwo	25496000	USD
CY2021Q4	us-gaap	Time Deposit Maturities Year Three TimeDepositMaturitiesYearThree	16640000	USD
CY2021Q4	us-gaap	Time Deposit Maturities Year Four TimeDepositMaturitiesYearFour	6533000	USD
CY2021Q4	us-gaap	Time Deposit Maturities Year Five TimeDepositMaturitiesYearFive	6040000	USD
CY2021Q4	us-gaap	Time Deposits TimeDeposits	198725000	USD
CY2021Q4	mbcn	Contractual Maturities Time Deposits250000 Or More Three Months Or Less ContractualMaturitiesTimeDeposits250000OrMoreThreeMonthsOrLess	7506000	USD
CY2021Q4	mbcn	Percent Of Time Deposits250000 Or More Three Months Or Less PercentOfTimeDeposits250000OrMoreThreeMonthsOrLess	0.2246	pure
CY2021Q4	mbcn	Contractual Maturities Time Deposits250000 Or More Three Months Through Six Months ContractualMaturitiesTimeDeposits250000OrMoreThreeMonthsThroughSixMonths	4778000	USD
CY2021Q4	mbcn	Percent Of Time Deposits250000 Or More Three Months Through Six Months PercentOfTimeDeposits250000OrMoreThreeMonthsThroughSixMonths	0.1430	pure
CY2021Q4	mbcn	Contractual Maturities Time Deposits250000 Or More Six Months Through12 Months ContractualMaturitiesTimeDeposits250000OrMoreSixMonthsThrough12Months	10463000	USD
CY2021Q4	mbcn	Percent Of Time Deposits250000 Or More Six Months Through12 Months PercentOfTimeDeposits250000OrMoreSixMonthsThrough12Months	0.3131	pure
CY2021Q4	mbcn	Contractual Maturities Time Deposits250000 Or More After12 Months ContractualMaturitiesTimeDeposits250000OrMoreAfter12Months	10672000	USD
CY2021Q4	mbcn	Percent Of Time Deposits250000 Or More After12 Months PercentOfTimeDeposits250000OrMoreAfter12Months	0.3194	pure
CY2021Q4	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	33419000	USD
CY2021Q4	mbcn	Percent Of Time Deposits250000 Or More PercentOfTimeDeposits250000OrMore	1.0000	pure
CY2021Q4	us-gaap	Related Party Deposit Liabilities RelatedPartyDepositLiabilities	29200000	USD
CY2021Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	0	USD
CY2020Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	0	USD
CY2021	us-gaap	Shortterm Debt Average Outstanding Amount ShorttermDebtAverageOutstandingAmount	85000	USD
CY2020	us-gaap	Shortterm Debt Average Outstanding Amount ShorttermDebtAverageOutstandingAmount	22637000	USD
CY2021	us-gaap	Shortterm Debt Maximum Monthend Outstanding Amount ShorttermDebtMaximumMonthendOutstandingAmount	0	USD
CY2020	us-gaap	Shortterm Debt Maximum Monthend Outstanding Amount ShorttermDebtMaximumMonthendOutstandingAmount	62329000	USD
CY2021	us-gaap	Short Term Debt Weighted Average Interest Rate Over Time ShortTermDebtWeightedAverageInterestRateOverTime	0.0040	pure
CY2020	us-gaap	Short Term Debt Weighted Average Interest Rate Over Time ShortTermDebtWeightedAverageInterestRateOverTime	0.0035	pure
CY2020Q4	us-gaap	Line Of Credit LineOfCredit	0	USD
CY2021Q4	mbcn	Federal Home Loan Bank Advances Additional Borrowing Capacity FederalHomeLoanBankAdvancesAdditionalBorrowingCapacity	417400000	USD
CY2020Q4	mbcn	Federal Home Loan Bank Advances Additional Borrowing Capacity FederalHomeLoanBankAdvancesAdditionalBorrowingCapacity	401700000	USD
CY2021Q4	us-gaap	Other Borrowings OtherBorrowings	12901000	USD
CY2020Q4	us-gaap	Other Borrowings OtherBorrowings	17038000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	265000	USD
CY2021Q4	mbcn	Long Term Debt Maturities Next Twelve Months Weighted Average Rate LongTermDebtMaturitiesNextTwelveMonthsWeightedAverageRate	0.0263	pure
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	272000	USD
CY2021Q4	mbcn	Long Term Debt Maturities Year Two Weighted Average Rate LongTermDebtMaturitiesYearTwoWeightedAverageRate	0.0263	pure
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	279000	USD
CY2021Q4	mbcn	Long Term Debt Maturities Year Three Weighted Average Rate LongTermDebtMaturitiesYearThreeWeightedAverageRate	0.0263	pure
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	286000	USD
CY2021Q4	mbcn	Long Term Debt Maturities Year Four Weighted Average Rate LongTermDebtMaturitiesYearFourWeightedAverageRate	0.0263	pure
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	298000	USD
CY2021Q4	mbcn	Long Term Debt Maturities Year Five Weighted Average Rate LongTermDebtMaturitiesYearFiveWeightedAverageRate	0.0263	pure
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	11501000	USD
CY2021Q4	mbcn	Long Term Debt Maturities After Year Five Weighted Average Rate LongTermDebtMaturitiesAfterYearFiveWeightedAverageRate	0.0197	pure
CY2021Q4	us-gaap	Other Borrowings OtherBorrowings	12901000	USD
CY2021Q4	mbcn	Other Borrowings Weighted Average Rate OtherBorrowingsWeightedAverageRate	0.0162	pure
CY2021Q4	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	417400000	USD
CY2006Q4	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	248000	USD
CY2021Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	4700000	USD
CY2021Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	237000	USD
CY2020Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	580000	USD
CY2021Q4	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Current And Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesCurrentAndNoncurrent	2247000	USD
CY2020Q4	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Current And Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesCurrentAndNoncurrent	1587000	USD
CY2021Q4	us-gaap	Employee Related Liabilities Current And Noncurrent EmployeeRelatedLiabilitiesCurrentAndNoncurrent	1631000	USD
CY2020Q4	us-gaap	Employee Related Liabilities Current And Noncurrent EmployeeRelatedLiabilitiesCurrentAndNoncurrent	1410000	USD
CY2021Q4	us-gaap	Other Accrued Liabilities Current And Noncurrent OtherAccruedLiabilitiesCurrentAndNoncurrent	1167000	USD
CY2020Q4	us-gaap	Other Accrued Liabilities Current And Noncurrent OtherAccruedLiabilitiesCurrentAndNoncurrent	1608000	USD
CY2021Q4	us-gaap	Accrued Liabilities And Other Liabilities AccruedLiabilitiesAndOtherLiabilities	6160000	USD
CY2020Q4	us-gaap	Accrued Liabilities And Other Liabilities AccruedLiabilitiesAndOtherLiabilities	5931000	USD
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	4466000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	2749000	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-401000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-1348000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4065000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1401000	USD
CY2021	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	4766000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210	pure
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	2047000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	3012000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	2826000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	608000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	482000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Investments DeferredTaxAssetsInvestments	18000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Investments DeferredTaxAssetsInvestments	18000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense DeferredTaxAssetsTaxDeferredExpense	350000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense DeferredTaxAssetsTaxDeferredExpense	355000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	293000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	244000	USD
CY2021Q4	mbcn	Deferred Tax Assets Lease Liability DeferredTaxAssetsLeaseLiability	1161000	USD
CY2020Q4	mbcn	Deferred Tax Assets Lease Liability DeferredTaxAssetsLeaseLiability	1173000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	5442000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	5098000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	632000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	709000	USD
CY2021Q4	mbcn	Deferred Tax Liabilities Unrealized Gain On Availableforsale Securities DeferredTaxLiabilitiesUnrealizedGainOnAvailableforsaleSecurities	920000	USD
CY2020Q4	mbcn	Deferred Tax Liabilities Unrealized Gain On Availableforsale Securities DeferredTaxLiabilitiesUnrealizedGainOnAvailableforsaleSecurities	1139000	USD
CY2021Q4	mbcn	Deferred Tax Liabilities Unrealized Gain On Equity Securities DeferredTaxLiabilitiesUnrealizedGainOnEquitySecurities	85000	USD
CY2020Q4	mbcn	Deferred Tax Liabilities Unrealized Gain On Equity Securities DeferredTaxLiabilitiesUnrealizedGainOnEquitySecurities	41000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Tax Deferred Income DeferredTaxLiabilitiesTaxDeferredIncome	139000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Tax Deferred Income DeferredTaxLiabilitiesTaxDeferredIncome	139000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	450000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	414000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Mortgage Servicing Rights DeferredTaxLiabilitiesMortgageServicingRights	114000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Mortgage Servicing Rights DeferredTaxLiabilitiesMortgageServicingRights	100000	USD
CY2021Q4	mbcn	Deferred Tax Liabilities Deferred Origination Fees DeferredTaxLiabilitiesDeferredOriginationFees	34000	USD
CY2020Q4	mbcn	Deferred Tax Liabilities Deferred Origination Fees DeferredTaxLiabilitiesDeferredOriginationFees	50000	USD
CY2021Q4	mbcn	Deferred Tax Liabilities Acquisition Fair Value Adjustments DeferredTaxLiabilitiesAcquisitionFairValueAdjustments	249000	USD
CY2020Q4	mbcn	Deferred Tax Liabilities Acquisition Fair Value Adjustments DeferredTaxLiabilitiesAcquisitionFairValueAdjustments	278000	USD
CY2021Q4	mbcn	Deferred Tax Liabilities Rightof Use Assets DeferredTaxLiabilitiesRightofUseAssets	1126000	USD
CY2020Q4	mbcn	Deferred Tax Liabilities Rightof Use Assets DeferredTaxLiabilitiesRightofUseAssets	1151000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	0	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	4000	USD
CY2021Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	3749000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	4025000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	1693000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	1073000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210	pure
CY2021	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	703000	USD
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CY2021Q4	us-gaap	Other Commitment OtherCommitment	280965000	USD
CY2020Q4	us-gaap	Other Commitment OtherCommitment	256010000	USD
CY2021Q4	mbcn	Number Of Branch Locations By Utilized Leases NumberOfBranchLocationsByUtilizedLeases	6	pure
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CY2021	mbcn	Finance Lease Other Cost FinanceLeaseOtherCost	63000	USD
CY2020	mbcn	Finance Lease Other Cost FinanceLeaseOtherCost	27000	USD
CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	225000	USD
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CY2021Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P14Y7M6D
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CY2021Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.026	pure
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CY2021Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	385000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	169000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	385000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	169000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	385000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	169000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	385000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	134000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	389000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	122000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	3726000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	932000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	5655000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	54000	USD
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CY2021Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	4653000	USD
CY2021Q4	mbcn	Mandatorily Redeemable Securities MandatorilyRedeemableSecurities	8000000.0	USD
CY2021Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	6297071
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CY2020Q4	mbcn	Reserves Required By Federal Reserve Bank ReservesRequiredByFederalReserveBank	0	USD
CY2021Q4	mbcn	Percent Of Common Stock PercentOfCommonStock	0.10	pure
CY2021Q4	mbcn	Amount Available For Payment Of Dividends AmountAvailableForPaymentOfDividends	7900000	USD
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CY2021Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.0600	pure
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CY2020Q4	mbcn	Common Equity Tier1 Capital Required For Capital Adequacy Plus Capital Conservation Buffer CommonEquityTier1CapitalRequiredForCapitalAdequacyPlusCapitalConservationBuffer	0.0700	pure
CY2020Q4	mbcn	Capital Required For Capital Adequacy Plus Capital Conservation Buffer To Risk Weighted Assets CapitalRequiredForCapitalAdequacyPlusCapitalConservationBufferToRiskWeightedAssets	0.1050	pure
CY2021	mbcn	Estimated Selling Costs Of Impaired Loans EstimatedSellingCostsOfImpairedLoans	901000	USD
CY2020	mbcn	Estimated Selling Costs Of Impaired Loans EstimatedSellingCostsOfImpairedLoans	838000	USD
CY2021Q4	us-gaap	Net Income Loss NetIncomeLoss	4837000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	0	USD
CY2021Q4	us-gaap	Secured Debt SecuredDebt	8248000	USD
CY2020Q4	us-gaap	Secured Debt SecuredDebt	8248000	USD
CY2021Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.65
CY2021Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.70
CY2021Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.85
CY2021Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.81
CY2021Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.65
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CY2021Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.85
CY2021Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.81
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CY2021Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	13142000	USD
CY2021Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	12936000	USD
CY2021Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	13447000	USD
CY2021Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	12810000	USD
CY2021Q1	us-gaap	Interest Expense InterestExpense	1244000	USD
CY2021Q2	us-gaap	Interest Expense InterestExpense	1049000	USD
CY2021Q3	us-gaap	Interest Expense InterestExpense	952000	USD
CY2021Q4	us-gaap	Interest Expense InterestExpense	820000	USD
CY2021Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	11898000	USD
CY2021Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	11887000	USD
CY2021Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	12495000	USD
CY2021Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	11990000	USD
CY2021Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	700000	USD
CY2021Q2	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	200000	USD
CY2021Q3	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	0	USD
CY2021Q4	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	-200000	USD
CY2021Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	11198000	USD
CY2021Q2	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	11687000	USD
CY2021Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	12495000	USD
CY2021Q4	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	12190000	USD
CY2021Q1	us-gaap	Noninterest Income NoninterestIncome	2218000	USD
CY2021Q2	us-gaap	Noninterest Income NoninterestIncome	1632000	USD
CY2021Q3	us-gaap	Noninterest Income NoninterestIncome	1821000	USD
CY2021Q4	us-gaap	Noninterest Income NoninterestIncome	1535000	USD
CY2021Q1	us-gaap	Noninterest Expense NoninterestExpense	8353000	USD
CY2021Q2	us-gaap	Noninterest Expense NoninterestExpense	7926000	USD
CY2021Q3	us-gaap	Noninterest Expense NoninterestExpense	7938000	USD
CY2021Q4	us-gaap	Noninterest Expense NoninterestExpense	7861000	USD
CY2021Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	5063000	USD
CY2021Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	5393000	USD
CY2021Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	6378000	USD
CY2021Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	5864000	USD
CY2021Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	896000	USD
CY2021Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	968000	USD
CY2021Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1174000	USD
CY2021Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1027000	USD
CY2021Q1	us-gaap	Net Income Loss NetIncomeLoss	4167000	USD
CY2021Q2	us-gaap	Net Income Loss NetIncomeLoss	4425000	USD
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	5204000	USD
CY2021Q4	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	5951838
CY2021Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	6378493
CY2021Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	6312230
CY2021Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	6157181
CY2021Q4	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	5975333
CY2020Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	13009000	USD
CY2020Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	13155000	USD
CY2020Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	13507000	USD
CY2020Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	12967000	USD
CY2020Q1	us-gaap	Interest Expense InterestExpense	2976000	USD
CY2020Q2	us-gaap	Interest Expense InterestExpense	2430000	USD
CY2020Q3	us-gaap	Interest Expense InterestExpense	2148000	USD
CY2020Q4	us-gaap	Interest Expense InterestExpense	1696000	USD
CY2020Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	10033000	USD
CY2020Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	10725000	USD
CY2020Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	11359000	USD
CY2020Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	11271000	USD
CY2020Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	2740000	USD
CY2020Q2	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	1000000	USD
CY2020Q3	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	4000000	USD
CY2020Q4	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	2100000	USD
CY2020Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	7293000	USD
CY2020Q2	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	9725000	USD
CY2020Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	7359000	USD
CY2020Q4	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	9171000	USD
CY2020Q1	us-gaap	Noninterest Income NoninterestIncome	1074000	USD
CY2020Q2	us-gaap	Noninterest Income NoninterestIncome	1495000	USD
CY2020Q3	us-gaap	Noninterest Income NoninterestIncome	1811000	USD
CY2020Q4	us-gaap	Noninterest Income NoninterestIncome	1610000	USD
CY2020Q1	us-gaap	Noninterest Expense NoninterestExpense	7252000	USD
CY2020Q2	us-gaap	Noninterest Expense NoninterestExpense	7689000	USD
CY2020Q3	us-gaap	Noninterest Expense NoninterestExpense	7022000	USD
CY2020Q4	us-gaap	Noninterest Expense NoninterestExpense	7825000	USD
CY2020Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1115000	USD
CY2020Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	3531000	USD
CY2020Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	2148000	USD
CY2020Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	2956000	USD
CY2020Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	74000	USD
CY2020Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	565000	USD
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	295000	USD
CY2020Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	467000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	1041000	USD
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	2966000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	1853000	USD
CY2020Q4	us-gaap	Net Income Loss NetIncomeLoss	2489000	USD
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.16
CY2020Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.47
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.29
CY2020Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.39
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.16
CY2020Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.46
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.29
CY2020Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.39
CY2020Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	6417109
CY2020Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	6369467
CY2020Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	6376291
CY2020Q4	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	6378706
CY2020Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	6429443
CY2020Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	6388118
CY2020Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	6385765
CY2020Q4	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	6397681

Files In Submission

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2021 Q4 Form 10-K Financial Statement

#000143774922006281 Filed on March 15, 2022

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$MBCN MIDDLEFIELD BANC CORP Stock $mbcn

2021 Q4 Form 10-K Financial Statement

#000143774922006281 Filed on March 15, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MBCN
MIDDLEFIELD BANC CORP Stock $mbcn