$MBCN
MIDDLEFIELD BANC CORP Stock $mbcn

$mbcn Overview Financials Valuation SEC Filings Company Website

2021 Q1 Form 10-Q Financial Statement

#000143774921010904 Filed on May 05, 2021

Income Statement

Concept	2021 Q1	2020 Q1
Revenue	$13.14M	$13.01M
YoY Change	1.02%	-3.52%
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	$610.0K	$630.0K
YoY Change	-3.17%	12.5%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$1.280M	$2.976M
YoY Change	-56.99%	-8.54%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$5.063M	$1.115M
YoY Change	354.08%	-69.22%
Income Tax	$896.0K	$74.00K
% Of Pretax Income	17.7%	6.64%
Net Earnings	$4.167M	$1.041M
YoY Change	300.29%	-65.43%
Net Earnings / Revenue	31.71%	8.0%
Basic Earnings Per Share	$0.65	$0.16
Diluted Earnings Per Share	$0.65	$0.16
COMMON SHARES
Basic Shares Outstanding	6.364M	6.417M
Diluted Shares Outstanding	6.378M	6.429M

Balance Sheet

Concept	2021 Q1	2020 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$100.5M	$55.33M
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	$18.00M	$17.65M
YoY Change	1.98%	12.15%
Goodwill	$15.07M	$15.07M
YoY Change	0.0%	0.0%
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	$1.388B	$1.214B
YoY Change	14.35%	-5.23%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$4.900M	$4.900M
YoY Change	0.0%	11.36%
Accrued Expenses		$0.00
YoY Change		-100.0%
Deferred Revenue
YoY Change
Short-Term Debt		$60.00M
YoY Change		-34.07%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$4.900M	$4.900M
YoY Change	0.0%	133.33%
LONG-TERM LIABILITIES
Long-Term Debt	$13.10M	$12.70M
YoY Change	3.15%	10.43%
Other Long-Term Liabilities	$4.900M	$4.900M
YoY Change	0.0%	11.36%
Total Long-Term Liabilities	$18.00M	$17.60M
YoY Change	2.27%	10.69%
TOTAL LIABILITIES
Total Short-Term Liabilities	$4.900M	$4.900M
Total Long-Term Liabilities	$18.00M	$17.60M
Total Liabilities	$1.243B	$1.081B
YoY Change	15.0%	-5.92%
SHAREHOLDERS EQUITY
Retained Earnings	$72.73M	$65.14M
YoY Change	11.65%	12.04%
Common Stock	$87.07M	$86.72M
YoY Change	0.4%	0.33%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$18.05M	$16.94M
YoY Change	6.56%	25.3%
Treasury Stock Shares	$978.8K	$929.4K
Shareholders Equity	$144.7M	$132.7M
YoY Change
Total Liabilities & Shareholders Equity	$1.388B	$1.214B
YoY Change	14.35%	-5.23%

Cashflow Statement

Concept	2021 Q1	2020 Q1
OPERATING ACTIVITIES
Net Income	$4.167M	$1.041M
YoY Change	300.29%	-65.43%
Depreciation, Depletion And Amortization	$610.0K	$630.0K
YoY Change	-3.17%	12.5%
Cash From Operating Activities	$2.769M	$2.980M
YoY Change	-7.08%	337.59%
INVESTING ACTIVITIES
Capital Expenditures	$51.00K	$184.0K
YoY Change	-72.28%	-37.63%
Acquisitions
YoY Change
Other Investing Activities	-$8.850M	-$18.13M
YoY Change	-51.19%	60.87%
Cash From Investing Activities	-$8.897M	-$18.31M
YoY Change	-51.41%	58.3%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	$1.111M	$1.191M
YoY Change	-6.72%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-$5.816M	$35.55M
YoY Change	-116.36%	48.14%
NET CHANGE
Cash From Operating Activities	$2.769M	$2.980M
Cash From Investing Activities	-$8.897M	-$18.31M
Cash From Financing Activities	-$5.816M	$35.55M
Net Change In Cash	-$11.94M	$20.22M
YoY Change	-159.07%	54.21%
FREE CASH FLOW
Cash From Operating Activities	$2.769M	$2.980M
Capital Expenditures	$51.00K	$184.0K
Free Cash Flow	$2.718M	$2.796M
YoY Change	-2.79%	624.35%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2021Q1	us-gaap	Cash Cash Equivalents And Federal Funds Sold CashCashEquivalentsAndFederalFundsSold	100473000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents And Federal Funds Sold CashCashEquivalentsAndFederalFundsSold	112417000	USD
CY2021Q1	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	690000	USD
CY2020Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	609000	USD
CY2021Q1	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	123218000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	114360000	USD
CY2021Q2	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	6333481
CY2021Q1	us-gaap	Common Stock No Par Value CommonStockNoParValue	0
CY2020Q4	us-gaap	Common Stock No Par Value CommonStockNoParValue	0
CY2021Q1	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	10000000
CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	10000000
CY2021Q1	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	7323487
CY2020Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	7308685
CY2021Q1	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	6344657
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	6379323
CY2021Q1	us-gaap	Treasury Stock Shares TreasuryStockShares	978830
CY2020Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	929362
CY2021Q1	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	49468
CY2020Q1	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	58200
CY2020Q1	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares	0
CY2020Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	0	USD
CY2020Q1	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	0	USD
CY2020Q1	us-gaap	Other Than Temporary Impairment Loss Debt Securities Available For Sale OtherThanTemporaryImpairmentLossDebtSecuritiesAvailableForSale	0	USD
CY2020	us-gaap	Other Than Temporary Impairment Loss Debt Securities Available For Sale OtherThanTemporaryImpairmentLossDebtSecuritiesAvailableForSale	0	USD
CY2020Q1	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	0	pure
CY2021Q1	us-gaap	Cash And Due From Banks CashAndDueFromBanks	93037000	USD
CY2020Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	92874000	USD
CY2021Q1	us-gaap	Federal Funds Sold FederalFundsSold	7436000	USD
CY2020Q4	us-gaap	Federal Funds Sold FederalFundsSold	19543000	USD
CY2021Q1	us-gaap	Loans Receivable Held For Sale Amount LoansReceivableHeldForSaleAmount	1260000	USD
CY2020Q4	us-gaap	Loans Receivable Held For Sale Amount LoansReceivableHeldForSaleAmount	878000	USD
CY2021Q1	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	1104200000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	1104085000	USD
CY2021Q1	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	14122000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	13459000	USD
CY2021Q1	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	1090078000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	1090626000	USD
CY2021Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	18002000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	18333000	USD
CY2021Q1	us-gaap	Goodwill Goodwill	15071000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	15071000	USD
CY2021Q1	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	1644000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	1724000	USD
CY2021Q1	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	16740000	USD
CY2020Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	16938000	USD
CY2021Q1	us-gaap	Other Real Estate OtherRealEstate	7372000	USD
CY2020Q4	us-gaap	Other Real Estate OtherRealEstate	7387000	USD
CY2021Q1	us-gaap	Interest Receivable And Other Assets InterestReceivableAndOtherAssets	13545000	USD
CY2020Q4	us-gaap	Interest Receivable And Other Assets InterestReceivableAndOtherAssets	13636000	USD
CY2021Q1	us-gaap	Assets Assets	1388093000	USD
CY2020Q4	us-gaap	Assets Assets	1391979000	USD
CY2021Q1	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	317224000	USD
CY2020Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	291347000	USD
CY2021Q1	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	215684000	USD
CY2020Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	195722000	USD
CY2021Q1	us-gaap	Deposits Money Market Deposits DepositsMoneyMarketDeposits	187204000	USD
CY2020Q4	us-gaap	Deposits Money Market Deposits DepositsMoneyMarketDeposits	198493000	USD
CY2021Q1	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	259973000	USD
CY2020Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	243888000	USD
CY2021Q1	us-gaap	Time Deposits TimeDeposits	245342000	USD
CY2020Q4	us-gaap	Time Deposits TimeDeposits	295750000	USD
CY2021Q1	us-gaap	Deposits Deposits	1225427000	USD
CY2020Q4	us-gaap	Deposits Deposits	1225200000	USD
CY2021Q1	us-gaap	Other Borrowings OtherBorrowings	13095000	USD
CY2020Q4	us-gaap	Other Borrowings OtherBorrowings	17038000	USD
CY2021Q1	us-gaap	Accrued Liabilities And Other Liabilities AccruedLiabilitiesAndOtherLiabilities	4901000	USD
CY2020Q4	us-gaap	Accrued Liabilities And Other Liabilities AccruedLiabilitiesAndOtherLiabilities	5931000	USD
CY2021Q1	us-gaap	Liabilities Liabilities	1243423000	USD
CY2020Q4	us-gaap	Liabilities Liabilities	1248169000	USD
CY2021Q1	us-gaap	Common Stock Value CommonStockValue	87073000	USD
CY2020Q4	us-gaap	Common Stock Value CommonStockValue	86886000	USD
CY2021Q1	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	72729000	USD
CY2020Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	69578000	USD
CY2021Q1	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	2917000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	4284000	USD
CY2021Q1	us-gaap	Treasury Stock Value TreasuryStockValue	18049000	USD
CY2020Q4	us-gaap	Treasury Stock Value TreasuryStockValue	16938000	USD
CY2021Q1	us-gaap	Stockholders Equity StockholdersEquity	144670000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	143810000	USD
CY2021Q1	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1388093000	USD
CY2020Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1391979000	USD
CY2021Q1	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	12167000	USD
CY2020Q1	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	12078000	USD
CY2021Q1	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	18000	USD
CY2020Q1	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	94000	USD
CY2021Q1	us-gaap	Interest Income Federal Funds Sold InterestIncomeFederalFundsSold	0	USD
CY2020Q1	us-gaap	Interest Income Federal Funds Sold InterestIncomeFederalFundsSold	21000	USD
CY2021Q1	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	370000	USD
CY2020Q1	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	157000	USD
CY2021Q1	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	558000	USD
CY2020Q1	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	629000	USD
CY2021Q1	us-gaap	Dividend Income Operating DividendIncomeOperating	29000	USD
CY2020Q1	us-gaap	Dividend Income Operating DividendIncomeOperating	30000	USD
CY2021Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	13142000	USD
CY2020Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	13009000	USD
CY2021Q1	us-gaap	Interest Expense Deposits InterestExpenseDeposits	1205000	USD
CY2020Q1	us-gaap	Interest Expense Deposits InterestExpenseDeposits	2865000	USD
CY2021Q1	us-gaap	Interest Expense Short Term Borrowings InterestExpenseShortTermBorrowings	0	USD
CY2020Q1	us-gaap	Interest Expense Short Term Borrowings InterestExpenseShortTermBorrowings	35000	USD
CY2021Q1	us-gaap	Interest Expense Other InterestExpenseOther	39000	USD
CY2020Q1	us-gaap	Interest Expense Other InterestExpenseOther	76000	USD
CY2021Q1	us-gaap	Interest Expense InterestExpense	1244000	USD
CY2020Q1	us-gaap	Interest Expense InterestExpense	2976000	USD
CY2021Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	11898000	USD
CY2020Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	10033000	USD
CY2021Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	700000	USD
CY2020Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	2740000	USD
CY2021Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	11198000	USD
CY2020Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	7293000	USD
CY2021Q1	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	81000	USD
CY2020Q1	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-160000	USD
CY2021Q1	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	226000	USD
CY2020Q1	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	107000	USD
CY2021Q1	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	592000	USD
CY2020Q1	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	114000	USD
CY2021Q1	us-gaap	Noninterest Income NoninterestIncome	2218000	USD
CY2020Q1	us-gaap	Noninterest Income NoninterestIncome	1074000	USD
CY2021Q1	us-gaap	Labor And Related Expense LaborAndRelatedExpense	4254000	USD
CY2020Q1	us-gaap	Labor And Related Expense LaborAndRelatedExpense	3584000	USD
CY2021Q1	us-gaap	Occupancy Net OccupancyNet	600000	USD
CY2020Q1	us-gaap	Occupancy Net OccupancyNet	550000	USD
CY2021Q1	us-gaap	Equipment Expense EquipmentExpense	357000	USD
CY2020Q1	us-gaap	Equipment Expense EquipmentExpense	273000	USD
CY2021Q1	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	786000	USD
CY2020Q1	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	666000	USD
CY2021Q1	mbcn	Ohio State Franchise Tax OhioStateFranchiseTax	286000	USD
CY2020Q1	mbcn	Ohio State Franchise Tax OhioStateFranchiseTax	268000	USD
CY2021Q1	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	144000	USD
CY2020Q1	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	123000	USD
CY2021Q1	us-gaap	Professional Fees ProfessionalFees	419000	USD
CY2020Q1	us-gaap	Professional Fees ProfessionalFees	349000	USD
CY2021Q1	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-46000	USD
CY2020Q1	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-1000	USD
CY2021Q1	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	221000	USD
CY2020Q1	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	209000	USD
CY2021Q1	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	80000	USD
CY2020Q1	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	141000	USD
CY2021Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	80000	USD
CY2020Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	83000	USD
CY2021Q1	us-gaap	Other Noninterest Expense OtherNoninterestExpense	1080000	USD
CY2020Q1	us-gaap	Other Noninterest Expense OtherNoninterestExpense	1005000	USD
CY2021Q1	us-gaap	Noninterest Expense NoninterestExpense	8353000	USD
CY2020Q1	us-gaap	Noninterest Expense NoninterestExpense	7252000	USD
CY2021Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	5063000	USD
CY2020Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1115000	USD
CY2021Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	896000	USD
CY2020Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	74000	USD
CY2021Q1	us-gaap	Net Income Loss NetIncomeLoss	4167000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	1041000	USD
CY2021Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.65
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.16
CY2021Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.65
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.16
CY2021Q1	us-gaap	Net Income Loss NetIncomeLoss	4167000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	1041000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-1730000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-5163000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-363000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-1084000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-1367000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-4079000	USD
CY2021Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	2800000	USD
CY2020Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-3038000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	143810000	USD
CY2021Q1	us-gaap	Net Income Loss NetIncomeLoss	4167000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-1367000	USD
CY2021Q1	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	94000	USD
CY2021Q1	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	93000	USD
CY2021Q1	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	1111000	USD
CY2021Q1	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	1016000	USD
CY2021Q1	us-gaap	Stockholders Equity StockholdersEquity	144670000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	137775000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	1041000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-4079000	USD
CY2020Q1	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	105000	USD
CY2020Q1	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	1191000	USD
CY2020Q1	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	964000	USD
CY2020Q1	us-gaap	Stockholders Equity StockholdersEquity	132687000	USD
CY2021Q1	us-gaap	Net Income Loss NetIncomeLoss	4167000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	1041000	USD
CY2021Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	700000	USD
CY2020Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	2740000	USD
CY2021Q1	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	81000	USD
CY2020Q1	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-160000	USD
CY2021Q1	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	371000	USD
CY2020Q1	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	306000	USD
CY2021Q1	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	80000	USD
CY2020Q1	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	141000	USD
CY2021Q1	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	78000	USD
CY2020Q1	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	99000	USD
CY2021Q1	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-80000	USD
CY2020Q1	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-84000	USD
CY2021Q1	us-gaap	Amortization Of Deferred Loan Origination Fees Net AmortizationOfDeferredLoanOriginationFeesNet	1394000	USD
CY2020Q1	us-gaap	Amortization Of Deferred Loan Origination Fees Net AmortizationOfDeferredLoanOriginationFeesNet	255000	USD
CY2021Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	80000	USD
CY2020Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	83000	USD
CY2021Q1	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	0	USD
CY2020Q1	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	-302000	USD
CY2021Q1	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	12458000	USD
CY2020Q1	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	3232000	USD
CY2021Q1	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	12668000	USD
CY2020Q1	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	4053000	USD
CY2021Q1	mbcn	Gain Loss On Sales Of Loans Excluding Student Loans Net GainLossOnSalesOfLoansExcludingStudentLoansNet	592000	USD
CY2020Q1	mbcn	Gain Loss On Sales Of Loans Excluding Student Loans Net GainLossOnSalesOfLoansExcludingStudentLoansNet	114000	USD
CY2021Q1	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	226000	USD
CY2020Q1	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	107000	USD
CY2021Q1	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-32000	USD
CY2020Q1	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-308000	USD
CY2021Q1	mbcn	Gains Losses On Sales Of Other Real Estate Gross GainsLossesOnSalesOfOtherRealEstateGross	-20000	USD
CY2020Q1	mbcn	Gains Losses On Sales Of Other Real Estate Gross GainsLossesOnSalesOfOtherRealEstateGross	-0	USD
CY2021Q1	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	-353000	USD
CY2020Q1	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	195000	USD
CY2021Q1	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-135000	USD
CY2020Q1	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	63000	USD
CY2021Q1	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	910000	USD
CY2020Q1	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	1277000	USD
CY2021Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	2769000	USD
CY2020Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	2980000	USD
CY2021Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	3576000	USD
CY2020Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	2779000	USD
CY2021Q1	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	14244000	USD
CY2020Q1	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	5252000	USD
CY2021Q1	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	-1179000	USD
CY2020Q1	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	14052000	USD
CY2021Q1	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	58000	USD
CY2020Q1	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	0	USD
CY2021Q1	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	424000	USD
CY2020Q1	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	0	USD
CY2021Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	51000	USD
CY2020Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	184000	USD
CY2021Q1	us-gaap	Payments To Acquire Federal Home Loan Bank Stock PaymentsToAcquireFederalHomeLoanBankStock	-0	USD
CY2020Q1	us-gaap	Payments To Acquire Federal Home Loan Bank Stock PaymentsToAcquireFederalHomeLoanBankStock	1600000	USD
CY2021Q1	mbcn	Redemption Of Restricted Stock RedemptionOfRestrictedStock	161000	USD
CY2020Q1	mbcn	Redemption Of Restricted Stock RedemptionOfRestrictedStock	0	USD
CY2021Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-8897000	USD
CY2020Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-18309000	USD
CY2021Q1	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	227000	USD
CY2020Q1	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	-17133000	USD
CY2021Q1	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	0	USD
CY2020Q1	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	54925000	USD
CY2021Q1	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	4010000	USD
CY2020Q1	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	88000	USD
CY2021Q1	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	94000	USD
CY2020Q1	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	USD
CY2021Q1	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares	0
CY2021Q1	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1111000	USD
CY2020Q1	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1191000	USD
CY2021Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	1016000	USD
CY2020Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	964000	USD
CY2021Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-5816000	USD
CY2020Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	35549000	USD
CY2021Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-11944000	USD
CY2020Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	20220000	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
CY2021Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	100473000	USD
CY2020Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	55333000	USD
CY2021Q1	us-gaap	Interest Paid Net InterestPaidNet	1379000	USD
CY2020Q1	us-gaap	Interest Paid Net InterestPaidNet	2913000	USD
CY2021Q1	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	63000	USD
CY2020Q1	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	301000	USD
CY2021Q1	mbcn	Finance Lease Assets Added To Premises And Equipment Noncash Investing Transactions FinanceLeaseAssetsAddedToPremisesAndEquipmentNoncashInvestingTransactions	67000	USD
CY2020Q1	mbcn	Finance Lease Assets Added To Premises And Equipment Noncash Investing Transactions FinanceLeaseAssetsAddedToPremisesAndEquipmentNoncashInvestingTransactions	-0	USD
CY2021Q1	mbcn	Finance Lease Liabilities Added To Borrowed Funds Noncash Financing Transactions FinanceLeaseLiabilitiesAddedToBorrowedFundsNoncashFinancingTransactions	67000	USD
CY2020Q1	mbcn	Finance Lease Liabilities Added To Borrowed Funds Noncash Financing Transactions FinanceLeaseLiabilitiesAddedToBorrowedFundsNoncashFinancingTransactions	0	USD
CY2021Q1	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;">Reclassification of Comparative Amounts</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>
CY2021Q1	mbcn	Revenue From Interest Income And Noninterest Income Percent RevenueFromInterestIncomeAndNoninterestIncomePercent	0.922	pure
CY2021Q1	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	81000	USD
CY2020Q1	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-160000	USD
CY2021Q1	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	226000	USD
CY2020Q1	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	107000	USD
CY2021Q1	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	592000	USD
CY2020Q1	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	114000	USD
CY2021Q1	us-gaap	Investment Banking Advisory Brokerage And Underwriting Fees And Commissions InvestmentBankingAdvisoryBrokerageAndUnderwritingFeesAndCommissions	127000	USD
CY2020Q1	us-gaap	Investment Banking Advisory Brokerage And Underwriting Fees And Commissions InvestmentBankingAdvisoryBrokerageAndUnderwritingFeesAndCommissions	131000	USD
CY2021Q1	us-gaap	Noninterest Income Other NoninterestIncomeOther	405000	USD
CY2020Q1	us-gaap	Noninterest Income Other NoninterestIncomeOther	329000	USD
CY2021Q1	us-gaap	Noninterest Income NoninterestIncome	2218000	USD
CY2020Q1	us-gaap	Noninterest Income NoninterestIncome	1074000	USD
CY2021Q1	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-46000	USD
CY2020Q1	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-1000	USD
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
CY2021Q1	mbcn	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercises In Period For Stock And Cash SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisesInPeriodForStockAndCash	12150
CY2021Q1	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	8.78
CY2021Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	0
CY2021Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	0
CY2021Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	0
CY2021Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	0
CY2021Q1	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	0	USD
CY2020Q1	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	-408000	USD
CY2021Q1	us-gaap	Deferred Compensation Sharebased Arrangements Liability Current And Noncurrent DeferredCompensationSharebasedArrangementsLiabilityCurrentAndNoncurrent	581000	USD
CY2020Q1	us-gaap	Deferred Compensation Sharebased Arrangements Liability Current And Noncurrent DeferredCompensationSharebasedArrangementsLiabilityCurrentAndNoncurrent	287000	USD
CY2021Q1	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	7315574
CY2020Q1	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	7298740
CY2021Q1	us-gaap	Weighted Average Number Of Shares Treasury Stock WeightedAverageNumberOfSharesTreasuryStock	951442
CY2020Q1	us-gaap	Weighted Average Number Of Shares Treasury Stock WeightedAverageNumberOfSharesTreasuryStock	881631
CY2021Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	6364132
CY2020Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	6417109
CY2021Q1	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	14361
CY2020Q1	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	12334
CY2021Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	6378493
CY2020Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	6429443
CY2021Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	0
CY2020Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	13500
CY2020Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	8.78
CY2021Q1	us-gaap	Treasury Stock Shares TreasuryStockShares	978830
CY2021Q1	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	49468
CY2020Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	929362
CY2021Q1	mbcn	Estimated Selling Costs Of Impaired Loans EstimatedSellingCostsOfImpairedLoans	911000	USD
CY2020	mbcn	Estimated Selling Costs Of Impaired Loans EstimatedSellingCostsOfImpairedLoans	838000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	0	USD
CY2021Q1	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	119525000	USD
CY2021Q1	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	3998000	USD
CY2021Q1	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	305000	USD
CY2021Q1	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	123218000	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
CY2021Q1	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	690000	USD
CY2020Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	609000	USD
CY2021Q1	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	81000	USD
CY2020Q1	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-160000	USD
CY2021Q1	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	0	USD
CY2021Q1	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	1554000	USD
CY2021Q1	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	1565000	USD
CY2021Q1	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	2192000	USD
CY2021Q1	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	2224000	USD
CY2021Q1	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	31968000	USD
CY2021Q1	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	32241000	USD
CY2021Q1	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	83811000	USD
CY2021Q1	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	87188000	USD
CY2021Q1	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	119525000	USD
CY2021Q1	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	123218000	USD
CY2020	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	0	USD
CY2021Q1	us-gaap	Security Owned And Pledged As Collateral Fair Value SecurityOwnedAndPledgedAsCollateralFairValue	67800000	USD
CY2020Q4	us-gaap	Security Owned And Pledged As Collateral Fair Value SecurityOwnedAndPledgedAsCollateralFairValue	71100000	USD
CY2021Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	13681000	USD
CY2021Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	305000	USD
CY2021Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	0	USD
CY2021Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	-0	USD
CY2021Q1	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	13681000	USD
CY2021Q1	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	305000	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
CY2021Q1	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	19	pure
CY2021Q1	mbcn	Percentage Of Portfolio PercentageOfPortfolio	0.79	pure
CY2021Q1	us-gaap	Other Than Temporary Impairment Loss Debt Securities Available For Sale OtherThanTemporaryImpairmentLossDebtSecuritiesAvailableForSale	0	USD
CY2021Q1	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	8857000	USD
CY2021Q1	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	1095343000	USD
CY2021Q1	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	1104200000	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
CY2021Q1	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	4000000.0	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	4400000	USD
CY2021Q1	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	1026000	USD
CY2021Q1	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	13096000	USD
CY2021Q1	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	14122000	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
CY2021Q1	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	3443000	USD
CY2021Q1	us-gaap	Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance	4019000	USD
CY2021Q1	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	5414000	USD
CY2021Q1	us-gaap	Impaired Financing Receivable With Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance	5694000	USD
CY2021Q1	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	1026000	USD
CY2021Q1	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	8857000	USD
CY2021Q1	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	9713000	USD
CY2021Q1	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	1026000	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
CY2021Q1	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	2800000	USD
CY2020Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	2900000	USD
CY2021Q1	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	70000	USD
CY2020	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	45000	USD
CY2021Q1	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	8473000	USD
CY2021Q1	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	80000	USD
CY2020Q1	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	12979000	USD
CY2020Q1	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	105000	USD
CY2021Q1	mbcn	Number Of Days Past Due NumberOfDaysPastDue	P90D
CY2021Q1	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	1104200000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	1104085000	USD
CY2021Q1	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	1099251000	USD
CY2021Q1	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	4949000	USD
CY2021Q1	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	1104200000	USD
CY2020Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	1095570000	USD
CY2020Q4	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	8515000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	1104085000	USD
CY2021Q1	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	8958000	USD
CY2021Q1	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
CY2021Q1	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	124000	USD
CY2020	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	126000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	13459000	USD
CY2021Q1	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	101000	USD
CY2021Q1	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	64000	USD
CY2021Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	700000	USD
CY2021Q1	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	14122000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	6768000	USD
CY2020Q1	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	508000	USD
CY2020Q1	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	244000	USD
CY2020Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	2740000	USD
CY2020Q1	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	9244000	USD
CY2021Q1	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	0	pure
CY2021Q1	mbcn	Payment Protection Plan Loan Forgiveness PaymentProtectionPlanLoanForgiveness	78500000	USD
CY2021Q1	mbcn	Payroll Protection Plan Number Of Loan Applications Approved PayrollProtectionPlanNumberOfLoanApplicationsApproved	530	pure
CY2021Q1	mbcn	Payment Protection Plan Amount To Be Funded PaymentProtectionPlanAmountToBeFunded	60500000	USD
CY2021Q1	mbcn	Paycheck Protection Program Deferred Fees Received PaycheckProtectionProgramDeferredFeesReceived	1000000.0	USD
CY2021Q1	mbcn	Financing Receivable Number Of Principal And Interest And Extension Of Maturity Date Payment Deferrals FinancingReceivableNumberOfPrincipalAndInterestAndExtensionOfMaturityDatePaymentDeferrals	14	pure
CY2021Q1	mbcn	Financing Receivable Principal And Interest Payments And Extension Of Maturity Date Payment Deferrals FinancingReceivablePrincipalAndInterestPaymentsAndExtensionOfMaturityDatePaymentDeferrals	25300000	USD
CY2020Q4	mbcn	Financing Receivable Number Of Principal And Interest And Extension Of Maturity Date Payment Deferrals FinancingReceivableNumberOfPrincipalAndInterestAndExtensionOfMaturityDatePaymentDeferrals	11	pure
CY2020Q4	mbcn	Financing Receivable Principal And Interest Payments And Extension Of Maturity Date Payment Deferrals FinancingReceivablePrincipalAndInterestPaymentsAndExtensionOfMaturityDatePaymentDeferrals	24500000	USD
CY2021Q1	mbcn	Financing Receivable Number Of Interest Only Payment Deferrals FinancingReceivableNumberOfInterestOnlyPaymentDeferrals	8	pure
CY2021Q1	mbcn	Financing Receivable Interest Payment Deferral FinancingReceivableInterestPaymentDeferral	19400000	USD

Files In Submission

Name	View Source	Status
R41.htm	Edgar Link	pending
0001437749-21-010904-index-headers.html	Edgar Link	pending
0001437749-21-010904-index.html	Edgar Link	pending
0001437749-21-010904.txt	Edgar Link	pending
0001437749-21-010904-xbrl.zip	Edgar Link	pending
ex_244507.htm	Edgar Link	pending
ex_244508.htm	Edgar Link	pending
ex_244509.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
logombc.jpg	Edgar Link	pending
mbcn-20210331.xsd	Edgar Link	pending
mbcn-20210331_cal.xml	Edgar Link	unprocessable
mbcn-20210331_def.xml	Edgar Link	unprocessable
mbcn-20210331_lab.xml	Edgar Link	unprocessable
mbcn-20210331_pre.xml	Edgar Link	unprocessable
mbcn20210331_10q.htm	Edgar Link	pending
mbcn20210331_10q_htm.xml	Edgar Link	completed
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
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R6.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$MBCN
MIDDLEFIELD BANC CORP Stock $mbcn

2021 Q1 Form 10-Q Financial Statement

#000143774921010904 Filed on May 05, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MBCN MIDDLEFIELD BANC CORP Stock $mbcn

2021 Q1 Form 10-Q Financial Statement

#000143774921010904 Filed on May 05, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MBCN
MIDDLEFIELD BANC CORP Stock $mbcn