Consolidated Statement of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
OPERATING ACTIVITIES
Net income	$ 1,628us-gaap_NetIncomeLoss	$ 1,763us-gaap_NetIncomeLoss
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	105us-gaap_ProvisionForLoanLossesExpensed	180us-gaap_ProvisionForLoanLossesExpensed
Investment securities (gain) loss, net	(24)us-gaap_GainLossOnSaleOfSecuritiesNet	6us-gaap_GainLossOnSaleOfSecuritiesNet
Depreciation and amortization	180	202
Amortization of premium and discount on investment securities	189	182
Accretion of deferred loan fees, net	(241)	(76)
Origination of loans held for sale	(2,664)
Proceeds from sale of loans	2,465
Gain on sale of loans	(53)us-gaap_GainLossOnSalesOfLoansNet
Earnings on bank-owned life insurance	(69)us-gaap_BankOwnedLifeInsuranceIncome	(67)us-gaap_BankOwnedLifeInsuranceIncome
Deferred income tax	(305)us-gaap_DeferredIncomeTaxExpenseBenefit	(156)us-gaap_DeferredIncomeTaxExpenseBenefit
Loss (gain) on other real estate owned	88	(5)
Increase in accrued interest receivable	(454)	(391)
Decrease in accrued interest payable	(11)	(19)
Other, net	(407)	(481)
Net cash provided by operating activities	427	1,138
INVESTING ACTIVITIES
Proceeds from repayments and maturities	2,224	3,306
Proceeds from sale of securities	1,590	514
Increase in loans, net	(5,497)	(8,139)
Proceeds from the sale of other real estate owned	299	47
Purchase of premises and equipment	(108)	(156)
Net cash used for investing activities	(1,492)	(4,428)
FINANCING ACTIVITIES
Net increase in deposits	31,031us-gaap_IncreaseDecreaseInDeposits	25,930us-gaap_IncreaseDecreaseInDeposits
Decrease in short-term borrowings, net	(9,895)	(5,489)
Repayment of other borrowings	(91)us-gaap_RepaymentsOfOtherDebt	(141)us-gaap_RepaymentsOfOtherDebt
Stock options exercised	2mbcn_PaymentsForStockOptionsExercised
Proceeds from dividend reinvestment and purchase plan	175	136
Cash dividends	(534)us-gaap_PaymentsOfDividendsCommonStock	(529)us-gaap_PaymentsOfDividendsCommonStock
Net cash provided by financing activities	20,688	19,907
Increase in cash and cash equivalents	19,623	16,617
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	25,639	26,193
CASH AND CASH EQUIVALENTS AT END OF PERIOD	45,262	42,810
SUPPLEMENTAL INFORMATION
Interest on deposits and borrowings	894us-gaap_InterestPaid	1,052us-gaap_InterestPaid
Income taxes		$ 610us-gaap_IncomeTaxesPaid

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Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

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The cash inflow associated with maturities (principal being due), prepayments and calls (requests of early payments) on securities not classified as either held-to-maturity securities or trading securities which are classified as available-for-sale securities.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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The net cash inflow or outflow for borrowing having initial term of repayment within one year or the normal operating cycle, if longer.

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The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities.

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The cash inflow from sales of loans that are secured with real estate mortgages and are held with the intention to resell in the near future.

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The cash inflow associated with the sale of other real estate not otherwise defined in the taxonomy.

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Amount of expense related to loss from loan transactions.

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

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-Article 9

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The cash outflow for the payment of other borrowing not otherwise defined in the taxonomy.

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