Middlefield Banc (MBCN) 10-K 11 Mar 15 2014 FY Annual report Financial data

Document_And_Entity_Informatio

Document And Entity Information (USD $)	12 Months Ended
	Dec. 31, 2014	Mar. 11, 2015	Jun. 30, 2014
Document and Entity Information [Abstract]
Entity Registrant Name	MIDDLEFIELD BANC CORP
Document Type	10-K
Current Fiscal Year End Date	-19
Entity Common Stock, Shares Outstanding		2,052,605
Entity Public Float			$60,300,000
Amendment Flag	FALSE
Entity Central Index Key	836147
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Smaller Reporting Company
Entity Well-known Seasoned Issuer	No
Document Period End Date	31-Dec-14
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY

Consolidated_Balance_Sheet

Consolidated Balance Sheet (USD $)	Dec. 31, 2014		Dec. 31, 2013
ASSETS
Cash and due from banks	$20,846,000		$20,926,000
Federal funds sold	4,793,000		5,267,000
Cash and cash equivalents	25,639,000		26,193,000
Investment securities available for sale, at fair value	154,334,000		157,143,000
Loans held for sale	438,000
Loans	470,584,000		435,725,000
Less allowance for loan and lease losses	6,846,000		7,046,000
Net loans	463,738,000		428,679,000
Premises and equipment, net	9,980,000		9,828,000
Goodwill	4,559,000		4,559,000
Core deposit intangibles	116,000		156,000
Bank-owned life insurance	9,092,000		8,816,000
Accrued interest and other assets	9,635,000		11,716,000
TOTAL ASSETS	677,531,000		647,090,000
Deposits:
Noninterest-bearing demand	105,512,000		85,905,000
Interest-bearing demand	56,377,000		53,741,000
Money market	75,895,000		77,473,000
Savings	178,470,000		177,303,000
Time	169,858,000		174,414,000
Total deposits	586,112,000		568,836,000
Short-term borrowings	14,808,000		10,809,000
Other borrowings	10,624,000		11,609,000
Accrued interest and other liabilities	2,120,000		2,363,000
TOTAL LIABILITIES	613,664,000		593,617,000
STOCKHOLDERS' EQUITY
Common stock, no par value; 10,000,000 shares authorized, 2,242,025 and 2,221,834 shares issued; 2,052,495 and 2,032,304 shares outstanding	35,529,000		34,979,000
Retained earnings	32,524,000		27,465,000
Accumulated other comprehensive income (loss)	2,548,000	[1]	-2,237,000	[1]
Treasury stock, at cost; 189,530 shares	-6,734,000		-6,734,000
TOTAL STOCKHOLDERS' EQUITY	63,867,000		53,473,000
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$677,531,000		$647,090,000
[1]	All amounts are net of tax. Amounts in parentheses indicate debits.

Consolidated_Balance_Sheet_Par

Consolidated Balance Sheet (Parentheticals) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Common stock, shares authorized	10,000,000	10,000,000
Common stock, shares issued	2,242,025	2,221,834
Common stock, no par value (in Dollars per share)	$0	$0
Common stock, shares outstanding	2,052,495	2,032,304
Treasury stock, shares	189,530	189,530

Consolidated_Statement_of_Inco

Consolidated Statement of Income (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
INTEREST INCOME
Interest and fees on loans	$22,726	$22,496	$22,418
Interest-bearing deposits in other institutions	24	30	26
Federal funds sold	14	15	20
Investment securities:
Taxable interest	1,896	2,514	3,209
Tax-exempt interest	3,127	3,044	2,976
Dividends on stock	87	79	97
Total interest income	27,874	28,178	28,746
INTEREST EXPENSE
Deposits	3,633	4,709	5,728
Short-term borrowings	148	178	261
Federal funds purchased		7
Other borrowings	118	166	294
Trust preferred securities	171	190	164
Total interest expense	4,070	5,250	6,447
NET INTEREST INCOME	23,804	22,928	22,299
Provision for loan losses	370	196	2,168
NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES	23,434	22,732	20,131
NONINTEREST INCOME
Service charges on deposit accounts	1,876	1,956	1,765
Investment securities gains, net	248	11	610
Earnings on bank-owned life insurance	276	280	279
Gains on sale of loans	237		85
Other income	951	898	712
Total noninterest income	3,588	3,145	3,451
NONINTEREST EXPENSE
Salaries and employee benefits	8,817	7,913	7,127
Occupancy expense	1,108	1,231	959
Equipment expense	963	950	759
Data processing costs	917	854	772
Ohio state franchise tax	342	618	590
Federal deposit insurance expense	449	516	487
Professional fees	1,086	1,174	948
Losses on other real estate owned	183	18	258
Advertising expenses	488	445	423
Other real estate expenses	387	410	498
Directors fees	403	403	386
Other expense	2,707	2,338	2,432
Total noninterest expense	17,850	16,870	15,639
Income before income taxes	9,172	9,007	7,943
Income taxes	1,992	1,979	1,662
NET INCOME	$7,180	$7,028	$6,281
EARNINGS PER SHARE
Basic (in Dollars per share)	$3.52	$3.48	$3.29
Diluted (in Dollars per share)	$3.50	$3.47	$3.28
DIVIDENDS DECLARED PER SHARE (in Dollars per share)	$1.04	$1.04	$1.04

Consolidated_Statement_of_Comp

Consolidated Statement of Comprehensive Income (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Net income	$7,180		$7,028		$6,281
Other comprehensive income (loss):
Net unrealized holding gain (loss) on available- for-sale investment securities	7,498		-11,545		1,897
Tax effect	-2,549		3,925		-644
Reclassification adjustment for investment security gains included in net income	-248		-11		-610
Tax effect	84		3		207
Total other comprehensive income (loss)	4,785	[1]	-7,628	[1]	850
Comprehensive income (loss)	$11,965		($600)		$7,131
[1]	All amounts are net of tax. Amounts in parentheses indicate debits.

Consolidated_Statement_of_Chan

Consolidated Statement of Changes in Stockholders' Equity (USD $)	Common Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]	Total
Balance, amount at Dec. 31, 2011	$31,240,000	$18,206,000	$4,541,000	($6,734,000)	$47,253,000
Balance, shares (in Shares) at Dec. 31, 2011	1,951,868
Net income		6,281,000			6,281,000
Comprehensive income (loss)			850,000		850,000
Stock-based compensation expense, amount	32,000				32,000
Stock-based compensation expense, shares (in Shares)	1,722
Common stock issuance, amount	2,329,000				2,329,000
Common stock issuance, shares (in Shares)	196,635
Dividend reinvestment and purchase plan, amount	694,000				694,000
Dividend reinvestment and purchase plan, shares (in Shares)	31,538
Cash dividends		-2,002,000			-2,002,000
Balance, amount at Dec. 31, 2012	34,295,000	22,485,000	5,391,000	-6,734,000	55,437,000
Balance, shares (in Shares) at Dec. 31, 2012	2,181,763
Net income		7,028,000			7,028,000
Comprehensive income (loss)			-7,628,000		-7,628,000
Common stock issuance, amount	74,000				74,000
Common stock issuance, shares (in Shares)	13,320
Dividend reinvestment and purchase plan, amount	736,000				736,000
Dividend reinvestment and purchase plan, shares (in Shares)	25,751
Stock options exercised, amount	-126,000	49,000			-77,000
Stock options exercised, shares (in Shares)	1,000				21,112
Cash dividends		-2,097,000			-2,097,000
Balance, amount at Dec. 31, 2013	34,979,000	27,465,000	-2,237,000	-6,734,000	53,473,000
Balance, shares (in Shares) at Dec. 31, 2013	2,221,834
Net income		7,180,000			7,180,000
Comprehensive income (loss)			4,785,000		4,785,000
Stock-based compensation expense, amount	10,000				10,000
Stock-based compensation expense, shares (in Shares)	400
Dividend reinvestment and purchase plan, amount	590,000				590,000
Dividend reinvestment and purchase plan, shares (in Shares)	19,791
Stock options exercised, amount	-50,000				-50,000
Stock options exercised, shares (in Shares)					11,223
Cash dividends		-2,121,000			-2,121,000
Balance, amount at Dec. 31, 2014	$35,529,000	$32,524,000	$2,548,000	($6,734,000)	$63,867,000
Balance, shares (in Shares) at Dec. 31, 2014	2,242,025

Consolidated_Statement_of_Chan1

Consolidated Statement of Changes in Stockholders' Equity (Parentheticals) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Common stock issuancе cost (in Dollars)		$139	$816
Cash dividends per share	$1.04	$1.04	$1.04
Common Stock [Member]
Cash dividends per share	$1.04	$1.04	$1.04

Consolidated_Statement_of_Cash

Consolidated Statement of Cash Flows (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
OPERATING ACTIVITIES
Net income	$7,180,000	$7,028,000	$6,281,000
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	370,000	196,000	2,168,000
Investment securities gains, net	-248,000	-11,000	-610,000
Depreciation and amortization	1,049,000	891,000	929,000
Amortization of premium and discount on investment securities	737,000	1,100,000	930,000
Amortization (accretion) of deferred loan fees, net	-237,000	-245,000	-188,000
Origination of loans held for sale	-6,223,000		-1,084,000
Proceeds from sale of loans held for sale	6,022,000		1,169,000
Gains on sale of loans	-237,000		-85,000
Earnings on bank-owned life insurance	-276,000	-280,000	-279,000
Deferred income taxes	-154,000	423,000	2,000
Stock-based compensation expense	10,000		32,000
Loss on other real estate owned	183,000	18,000	258,000
Decrease in accrued interest receivable	40,000	28,000	71,000
Decrease in accrued interest payable	-49,000	-128,000	-153,000
Decrease in prepaid federal deposit insurance		513,000	486,000
Other, net	-708,000	364,000	355,000
Net cash provided by operating activities	7,459,000	9,897,000	10,282,000
Investment securities available for sale:
Proceeds from repayments and maturities	13,474,000	25,411,000	50,919,000
Proceeds from sale of securities	8,383,000	25,088,000	32,985,000
Purchases	-12,287,000	-25,815,000	-83,431,000
Increase in loans, net	-36,222,000	-29,829,000	-8,435,000
Proceeds from the sale of other real estate owned	832,000	882,000	954,000
Purchase of premises and equipment	-902,000	-1,834,000	-997,000
Net cash used for investing activities	-26,722,000	-6,097,000	-8,005,000
FINANCING ACTIVITIES
Net increase (decrease) in deposits	17,276,000	-24,499,000	12,373,000
Increase (decrease) in short-term borrowings, net	3,999,000	4,271,000	-854,000
Repayment of other borrowings	-985,000	-1,361,000	-3,861,000
Common stock issued		74,000	2,329,000
Stock options exercised	-50,000	-77,000
Proceeds from dividend reinvestment and purchase plan	590,000	736,000	694,000
Cash dividends	-2,121,000	-2,097,000	-2,002,000
Net cash provided by (used for) financing activities	18,709,000	-22,953,000	8,679,000
(Decrease) increase in cash and cash equivalents	-554,000	-19,153,000	10,956,000
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	26,193,000	45,346,000	34,390,000
CASH AND CASH EQUIVALENTS AT END OF YEAR	25,639,000	26,193,000	45,346,000
Cash paid during the year for:
Interest on deposits and borrowings	4,119,000	5,378,000	6,600,000
Income taxes	2,260,000	1,620,000	1,550,000
Non-cash investing transactions:
Transfers from loans to other real estate owned	1,030,000	2,113,000	862,000
Loans to facilitate the sale of other real estate owned		($260,000)

Note_1_Summary_of_Significant_

Note 1 - Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Significant Accounting Policies [Text Block]	1	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
	A summary of the significant accounting and reporting policies applied in the presentation of the accompanying financial statements follows:
	Nature of Operations and Basis of Presentation
	Middlefield Banc Corp. (the “Company”) is an Ohio corporation organized to become the holding company of The Middlefield Banking Company (“MBC”). MBC is a state-chartered bank located in Ohio. On April 19, 2007, Middlefield Banc Corp. acquired Emerald Bank (“EB”), an Ohio-chartered commercial bank headquartered in Dublin, Ohio. EB merged into MBC on January 20, 2014. On October 23, 2009, the Company established an asset resolution subsidiary named EMORECO, Inc. The Company and its subsidiaries derive substantially all of their income from banking and bank-related services, which includes interest earnings on residential real estate, commercial mortgage, commercial and consumer financings as well as interest earnings on investment securities and deposit services to its customers through ten locations. The Company is supervised by the Board of Governors of the Federal Reserve System, while MBC is subject to regulation and supervision by the Federal Deposit Insurance Corporation and the Ohio Division of Financial Institutions.
	The consolidated financial statements of the Company include its wholly-owned subsidiaries, MBC and EMORECO, Inc. Significant intercompany items have been eliminated in preparing the consolidated financial statements.
	The financial statements have been prepared in conformity with U.S. Generally Accepted Accounting Principles. In preparing the financial statements, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the balance sheet date and revenues and expenses for the period. Actual results could differ from those estimates.
	Investment Securities
	Investment securities are classified at the time of purchase, based on management’s intention and ability, as securities held to maturity or securities available for sale. Debt securities acquired with the intent and ability to hold to maturity are stated at cost adjusted for amortization of premium and accretion of discount, which are computed using a level yield method and recognized as adjustments of interest income. Certain other debt securities have been classified as available for sale to serve principally as a source of liquidity. Unrealized holding gains and losses for available-for-sale securities are reported as a separate component of stockholders’ equity, net of tax, until realized. Realized security gains and losses are computed using the specific identification method. Interest and dividends on investment securities are recognized as income when earned.
	Securities are evaluated on at least a quarterly basis and more frequently when economic or market conditions warrant such an evaluation to determine whether a decline in their value is other than temporary. For debt securities, management considers whether the present value of cash flows expected to be collected are less than the security’s amortized cost basis (the difference defined as the credit loss), the magnitude and duration of the decline, the reasons underlying the decline and the Company’s intent to sell the security or whether it is more likely than not that the Company would be required to sell the security before its anticipated recovery in market value, to determine whether the loss in value is other than temporary. Once a decline in value is determined to be other than temporary, if the Company does not intend to sell the security, and it is more likely than not that it will not be required to sell the security, before recovery of the security’s amortized cost basis, the charge to earnings is limited to the amount of credit loss. Any remaining difference between fair value and amortized cost (the difference defined as the non-credit portion) is recognized in other comprehensive income, net of applicable taxes. Otherwise, the entire difference between fair value and amortized cost is charged to earnings. For equity securities where the fair value has been significantly below cost for one year, the Company’s policy is to recognize an impairment loss unless sufficient evidence is available that the decline is not other than temporary and a recovery period can be predicted.
	Restricted Stock
	Common stock of the Federal Home Loan Bank (“FHLB”) represents ownership in an institution that is wholly owned by other financial institutions. This equity security is accounted for at cost and classified with other assets. The FHLB of Cincinnati has reported profits for 2014 and 2013, remains in compliance with regulatory capital and liquidity requirements, and continues to pay dividends on the stock and make redemptions at the par value. With consideration given to these factors, management concluded that the stock was not impaired at December 31, 2014 or 2013.
	Mortgage Banking Activities Mortgage loans originated and intended for sale in the secondary market are carried at fair value. The Company sells the loans on a servicing retained basis. Servicing rights are initially recorded at fair value with the income statement effect recorded in gains on sales of loans. The Company measures servicing assets using the amortization method. Fair value is based on market prices for comparable mortgage servicing contracts, when available, or alternatively, is based on a valuation model that calculates the present value of estimated future net servicing income. Loan servicing rights are amortized in proportion to and over the period of estimated net future servicing revenue. The expected period of the estimated net servicing income is based in part on the expected prepayment of the underlying mortgages. The unamortized balance of mortgage servicing rights is included in accrued interest and other assets on the Consolidated Balance Sheet.
	Mortgage servicing rights are periodically evaluated for impairment. Impairment represents the excess of amortized cost over its estimated fair value. Impairment is determined by stratifying rights into tranches based on predominant risk characteristics, such as interest rate and original time to maturity. Any impairment is reported as a valuation allowance for an individual tranche. If the Company later determines that all or a portion of the impairment no longer exists for a particular grouping, a reduction of the allowance will be recorded as an increase to income.
	Servicing fee income is recorded for fees earned for servicing loans. The fees are based on a contractual percentage of outstanding principal and are recorded as income when earned. The amortization of mortgage servicing rights is netted against loan servicing fee income. Late fees and ancillary fees related to loan servicing are not material.
	The Company is exposed to interest rate risk on loans held for sale and rate-lock loan commitments (“IRLCs”). As market interest rates increase or decrease, the fair value of loans held for sale and rate-lock commitments will decrease or increase. The Company enters into derivative transactions principally to protect against the risk of adverse interest movements affecting the value of the Company’s committed loan sales pipeline. In order to mitigate the risk that a change in interest rates will result in a decrease in value of the Company’s IRLCs in the committed mortgage pipeline or its loans held for sale, the Company enters into mandatory forward loan sales contracts with secondary market participants. Mandatory forward sales contracts and committed loans intended to be held for sale are considered free-standing derivative instruments and changes in fair value are recorded in current period earnings. For committed loans, fair value is measured using current market rates for the associated mortgage loans. For mandatory forward sales contracts, fair value is measured using secondary market pricing.
	Loans
	Loans that management has the intent and ability to hold for the foreseeable future or until maturity or payoff generally are reported at their outstanding unpaid principal balances net of the allowance for loan and lease losses. Interest income is recognized as income when earned on the accrual method. The accrual of interest is discontinued on a loan when management believes, after considering economic and business conditions, the borrower’s financial condition is such that collection of interest is doubtful. Interest received on nonaccrual loans is recorded as income or applied against principal according to management’s judgment as to the collectability of such principal.
	Loan origination fees and certain direct loan origination costs are being deferred and the net amount amortized as an adjustment of the related loan’s yield. Management is amortizing these amounts over the contractual life of the related loans.
	Allowance for Loan and Lease Losses
	The allowance for loan and lease losses represents the amount which management estimates is adequate to provide for probable loan losses inherent in the loan portfolio. The allowance method is used in providing for loan losses. Accordingly, all loan losses are charged to the allowance, and all recoveries are credited to it. The allowance for loan and lease losses is established through a provision for loan losses which is charged to operations. The provision is based on management’s periodic evaluation of the adequacy of the allowance for loan and lease losses, which encompasses the overall risk characteristics of the various portfolio segments, past experience with losses, the impact of economic conditions on borrowers, and other relevant factors. The estimates used in determining the adequacy of the allowance for loan and lease losses, including the amounts and timing of future cash flows expected on impaired loans, are particularly susceptible to significant change in the near term.
	A loan is considered impaired when it is probable the borrower will not repay the loan according to the original contractual terms of the loan agreement. Management has determined that first mortgage loans on one-to-four family properties and all consumer loans represent large groups of smaller-balance homogeneous loans that are to be collectively evaluated. Loans that experience insignificant payment delays, which are defined as 90 days or less, generally are not classified as impaired. A loan is not impaired during a period of delay in payment if the Company expects to collect all amounts due, including interest accrued, at the contractual interest rate for the period of delay. All loans identified as impaired are evaluated independently by management. The Company estimates credit losses on impaired loans based on the present value of expected cash flows or the fair value of the underlying collateral if the loan repayment is expected to come from the sale or operation of such collateral. Impaired loans, or portions thereof, are charged off when it is determined a realized loss has occurred. Until such time, an allowance for loan and lease losses is maintained for estimated losses. Cash receipts on impaired loans are applied first to accrued interest receivable unless otherwise required by the loan terms, except when an impaired loan is also a nonaccrual loan, in which case the portion of the payment related to interest is recognized as income.
	Mortgage loans secured by one-to-four family properties and all consumer loans are large groups of smaller-balance homogeneous loans and are measured for impairment collectively. Management determines the significance of payment delays on a case-by-case basis, taking into consideration all circumstances concerning the loan, the creditworthiness and payment history of the borrower, the length of the payment delay, and the amount of shortfall in relation to the principal and interest owed.
	Premises and Equipment
	Land is carried at cost. Premises and equipment are stated at cost net of accumulated depreciation. Depreciation is computed on the straight-line method over the estimated useful lives of the assets, which range from 3 to 20 years for furniture, fixtures, and equipment and 3 to 40 years for buildings and leasehold improvements. Expenditures for maintenance and repairs are charged against income as incurred. Costs of major additions and improvements are capitalized.
	Goodwill
	The Company accounts for goodwill using a three-step process for testing the impairment of goodwill on at least an annual basis. This approach could cause more volatility in the Company’s reported net income because impairment losses, if any, could occur irregularly and in varying amounts. No impairment of goodwill was recognized in any of the periods presented.
	Intangible Assets
	Intangible assets include core deposit intangibles, which are a measure of the value of consumer demand and savings deposits acquired in business combinations accounted for as purchases. The core deposit intangibles are being amortized to expense over a 10 year life on a straight-line basis. The recoverability of the carrying value of intangible assets is evaluated on an ongoing basis, and permanent declines in value, if any, are charged to expense.
	Bank-Owned Life Insurance (“BOLI”)
	The Company owns insurance on the lives of a certain group of key employees. The policies were purchased to help offset the increase in the costs of various fringe benefit plans including healthcare. The cash surrender value of these policies is included as an asset on the Consolidated Balance Sheet and any increases in the cash surrender value are recorded as noninterest income on the Consolidated Statement of Income. In the event of the death of an insured individual under these policies, the Company would receive a death benefit, which would be recorded as noninterest income.
	Other Real Estate Owned
	Real estate properties acquired through foreclosure are initially recorded at fair value at the date of foreclosure, establishing a new cost basis. After foreclosure, management periodically performs valuations and the real estate is carried at the lower of cost or fair value less estimated cost to sell. Revenue and expenses from operations of the properties, gains or losses on sales and additions to the valuation allowance are included in operating results.
	Income Taxes
	The Company and its subsidiaries file a consolidated federal income tax return. Deferred tax assets and liabilities are reflected at currently enacted income tax rates applicable to the period in which the deferred tax assets or liabilities are expected to be realized or settled. As changes in tax laws or rates are enacted, deferred tax assets and liabilities are adjusted through the provision for income taxes.
	Earnings Per Share
	The Company provides dual presentation of basic and diluted earnings per share. Basic earnings per share are calculated utilizing net income as reported in the numerator and average shares outstanding in the denominator. The computation of diluted earnings per share differs in that the dilutive effects of any stock options, warrants, and convertible securities are adjusted in the denominator.
	Stock-Based Compensation
	The Company accounts for stock compensation based on the grant date fair value of all share-based payment awards that are expected to vest, including employee share options to be recognized as employee compensation expense over the requisite service period.
	For each of the years ended December 31, 2014, 2013, and 2012, the Company recorded no compensation cost related to vested stock options. As of December 31, 2014, there was no unrecognized compensation cost related to unvested stock options.
	The Company issued 1,722 shares of restricted stock and recorded stock–based compensation expense of $32,000 in 2012. There were no shares of restricted stock issued in 2014 or 2013.
	For the years ended December 31, 2014 and 2013, 11,223 and 21,112 options were exercised resulting in net proceeds of $50,000 and $77,000, respectively.
	Cash Flow Information
	The Company has defined cash and cash equivalents as those amounts included in the Consolidated Balance Sheet captions as “Cash and due from banks” and “Federal funds sold” with original maturities of less than 90 days.
	Advertising Costs
	Advertising costs are expensed as incurred.
	Reclassification of Comparative Amounts
	Certain comparative amounts for prior years have been reclassified to conform to current-year presentations. Such reclassifications did not affect net income or retained earnings.
	Recent Accounting Pronouncements
	In January 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2014-01, Investments – Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Qualified Affordable Housing Projects. The amendments in this Update permit reporting entities to make an accounting policy election to account for their investments in qualified affordable housing projects using the proportional amortization method if certain conditions are met. Under the proportional amortization method, an entity amortizes the initial cost of the investment in proportion to the tax credits and other tax benefits received and recognizes the net investment performance in the income statement as a component of income tax expense (benefit). The amendments in this Update should be applied retrospectively to all periods presented. A reporting entity that uses the effective yield method to account for its investments in qualified affordable housing projects before the date of adoption may continue to apply the effective yield method for those preexisting investments. The amendments in this Update are effective for public business entities for annual periods and interim reporting periods within those annual periods, beginning after December 15, 2014. Early adoption is permitted. This Update is not expected to have a significant impact on the Company’s financial statements.
	In January 2014, the FASB issued ASU 2014-04, Receivables – Troubled Debt Restructurings by Creditors (Subtopic 310-40): Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure. The amendments in this Update clarify that an in-substance repossession or foreclosure occurs, and a creditor is considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan, upon either (1) the creditor obtaining legal title to the residential real estate property upon completion of a foreclosure or (2) the borrower conveying all interest in the residential real estate property to the creditor to satisfy that loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. Additionally, the amendments require interim and annual disclosure of both (1) the amount of foreclosed residential real estate property held by the creditor and (2) the recorded investment in consumer mortgage loans collateralized by residential real estate property that are in the process of foreclosure according to local requirements of the applicable jurisdiction. The amendments in this Update are effective for public business entities for annual periods, and interim periods within those annual periods, beginning after December 15, 2014. An entity can elect to adopt the amendments in this Update using either a modified retrospective transition method or a prospective transition method. This Update is not expected to have a significant impact on the Company’s financial statements.
	In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (a new revenue recognition standard). The Update’s core principle is that a company will recognize revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. In addition, this update specifies the accounting for certain costs to obtain or fulfill a contract with a customer and expands disclosure requirements for revenue recognition. This Update is effective for annual reporting periods beginning after December 15, 2016, including interim periods within that reporting period. The Company is evaluating the effect of adopting this new accounting Update.
	In June 2014, the FASB issued ASU 2014-11, Transfers and Servicing (Topic 860): Repurchase-to-Maturity Transactions, Repurchase Financings, and Disclosures. The amendments in this Update change the accounting for repurchase-to-maturity transactions to secured borrowing accounting. For repurchase financing arrangements, the amendments require separate accounting for a transfer of a financial asset executed contemporaneously with a repurchase agreement with the same counterparty, which will result in secured borrowing accounting for the repurchase agreement. The amendments also require enhanced disclosures. The accounting changes in this Update are effective for the first interim or annual period beginning after December 15, 2014. An entity is required to present changes in accounting for transactions outstanding on the effective date as a cumulative-effect adjustment to retained earnings as of the beginning of the period of adoption. Earlier application is prohibited. The disclosure for certain transactions accounted for as a sale is required to be presented for interim and annual periods beginning after December 15, 2014, and the disclosure for repurchase agreements, securities lending transactions, and repurchase-to-maturity transactions accounted for as secured borrowings are required to be presented for annual periods beginning after December 15, 2014, and for interim periods beginning after March 15, 2015. The disclosures are not required to be presented for comparative periods before the effective date. This Update is not expected to have a significant impact on the Company’s financial statements.
	In June 2014, the FASB issued ASU 2014-12, Compensation-Stock Compensation (Topic 718): Accounting for Share-Based Payments when the Terms of an Award Provide that a Performance Target Could Be Achieved After the Requisite Service Period. The amendments require that a performance target that affects vesting and that could be achieved after the requisite service period be treated as a performance condition. The amendments in this Update are effective for annual periods and interim periods within those annual periods beginning after December 15, 2015. Earlier adoption is permitted. Entities may apply the amendments in this Update either (a) prospectively to all awards granted or modified after the effective date or (b) retrospectively to all awards with performance targets that are outstanding as of the beginning of the earliest annual period presented in the financial statements and to all new or modified awards thereafter. If retrospective transition is adopted, the cumulative effect of applying this Update as of the beginning of the earliest annual period presented in the financial statements should be recognized as an adjustment to the opening retained earnings balance at that date. Additionally, if retrospective transition is adopted, an entity may use hindsight in measuring and recognizing the compensation cost. This Update is not expected to have a significant impact on the Company’s financial statements.
	In August 2014, the FASB issued ASU 2014-14, Receivables – Troubled Debt Restructurings by Creditors (Subtopic 310-40). The amendments in this Update require that a mortgage loan be derecognized and that a separate other receivable be recognized upon foreclosure if the following conditions are met: (1) the loan has a government guarantee that is not separable from the loan before foreclosure, (2) at the time of foreclosure, the creditor has the intent to convey the real estate property to the guarantor and make a claim on the guarantee, and the creditor has the ability to recover under that claim, and (3) at the time of foreclosure, any amount of the claim that is determined on the basis of the fair value of the real estate is fixed. Upon foreclosure, the separate other receivable should be measured based on the amount of the loan balance (principal and interest) expected to be recovered from the guarantor. The amendments in this Update are effective for public business entities for annual periods, and interim periods within those annual periods, beginning after December 15, 2014. This Update is not expected to have a significant impact on the Company’s financial statements.
	In August 2014, the FASB issued ASU 2014-15, Presentation of Financial Statements-Going Concern (Subtopic 205-40). The amendments in this Update provide guidance in accounting principles generally accepted in the United States of America about management's responsibility to evaluate whether there is substantial doubt about an entity's ability to continue as a going concern and to provide related footnote disclosures. The amendments in this Update are effective for the annual period ending after December 15, 2016, and for annual periods and interim periods thereafter. Early application is permitted. This Update is not expected to have a significant impact on the Company’s financial statements.
	In November 2014, the FASB issued ASU 2014-16, Derivatives and Hedging (Topic 815): Determining Whether the Host Contract in a Hybrid Financial Instrument Issued in the Form of a Share Is More Akin to Debt or to Equity (a consensus of the FASB Emerging Issues Task Force). This ASU clarifies how current U.S. GAAP should be interpreted in subjectively evaluating the economic characteristics and risks of a host contract in a hybrid financial instrument that is issued in the form of a share. Public business entities are required to implement the new requirements in fiscal years and interim periods within those fiscal years beginning after December 15, 2015. This Update is not expected to have a significant impact on the Company’s financial statements.
	In November 2014, the FASB issued ASU 2014-17, Business Combinations (Topic 805): Pushdown Accounting. The amendments in this Update apply to the separate financial statements of an acquired entity and its subsidiaries that are a business or nonprofit activity (either public or nonpublic) upon the occurrence of an event in which an acquirer (an individual or an entity) obtains control of the acquired entity. An acquired entity may elect the option to apply pushdown accounting in the reporting period in which the change-in-control event occurs. If pushdown accounting is not applied in the reporting period in which the change-in-control event occurs, an acquired entity will have the option to elect to apply pushdown accounting in a subsequent reporting period to the acquired entity's most recent change-in-control event. The amendments in this Update are effective on November 18, 2014. After the effective date, an acquired entity can make an election to apply the guidance to future change-in-control events or to its most recent change-in-control event. This Update is not expected to have a significant impact on the Company’s financial statements.
	In January 2015, the FASB issued ASU 2015-01, Income Statement –Extraordinary and Unusual Items, as part of its initiative to reduce complexity in accounting standards. This Update eliminates from GAAP the concept of extraordinary items. The amendments in this Update are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015. A reporting entity may apply the amendments prospectively. A reporting entity also may apply the amendments retrospectively to all prior periods presented in the financial statements. Early adoption is permitted provided that the guidance is applied from the beginning of the fiscal year of adoption. This Update is not expected to have a significant impact on the Company’s financial statements.

Note_2_Earnings_Per_Share

Note 2 - Earnings Per Share	12 Months Ended
	Dec. 31, 2014
Earnings Per Share [Abstract]
Earnings Per Share [Text Block]	2	EARNINGS PER SHARE
	There are no convertible securities that would affect the numerator in calculating basic and diluted earnings per share; therefore, net income as presented on the Consolidated Statement of Income will be used as the numerator. The following table sets forth the composition of the weighted-average common shares (denominator) used in the basic and diluted earnings per share computation for the year ended December 31.
			2014			2013			2012
	Weighted-average common shares outstanding			2,231,165			2,206,392			2,101,490
	Average treasury stock shares			(189,530	)		(189,530	)		(189,530	)
	Weighted-average common shares and common stock equivalents used to calculate basic earnings per share			2,041,635			2,016,862			1,911,960
	Additional common stock equivalents used to calculate diluted earnings per share			7,871			7,178			4,972
	Weighted-average common shares and common stock equivalents used to calculate diluted earnings per share			2,049,506			2,024,040			1,916,932
	Options to purchase 46,451 shares of common stock at prices ranging from $17.55 to $40.24 were outstanding during the year ended December 31, 2014. Of those options, 28,282 were considered dilutive based on the average market price exceeding the strike price for the year ended December 31, 2014.  The remaining options had no dilutive effect on the earnings per share.
	Options to purchase 58,581 shares of common stock at prices ranging from $17.55 to $40.24 were outstanding during the year ended December 31, 2013. Of those options, 39,808 were considered dilutive based on the average market price exceeding the strike price for the year ended December 31, 2013.  The remaining options had no dilutive effect on the earnings per share.
	Options to purchase 79,693 shares of common stock at prices ranging from $17.55 to $40.24 were outstanding during the year ended December 31, 2012. Of those options, 8,875 were considered dilutive based on the average market price exceeding the strike price for the year ended December 31, 2012.  In accordance with the subscription agreement entered into by an institutional investor, there were also an additional 12,419 shares, at $16 per share, considered dilutive for the year ended December 31, 2012.  The remaining options had no dilutive effect on the earnings per share.

Note_3_Investment_Securities_A

Note 3 - Investment Securities Available For Sale	12 Months Ended
	Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract]
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]	3	INVESTMENT SECURITIES AVAILABLE FOR SALE
	The amortized cost and fair values of securities available for sale are as follows:
			31-Dec-14
						Gross			Gross
			Amortized			Unrealized			Unrealized			Fair
	(Dollar amounts in thousands)		Cost			Gains			Losses			Value
	U.S. government agency securities		$	23,035		$	311		$	(450	)	$	22,896
	Obligations of states and political subdivisions:
	Taxable			2,953			226			-			3,179
	Tax-exempt			91,916			3,803			(553	)		95,166
	Mortgage-backed securities in government-sponsored entities			29,150			475			(234	)		29,391
	Private-label mortgage-backed securities			2,672			247			-			2,919
	Total debt securities			149,726			5,062			(1,237	)		153,551
	Equity securities in financial institutions			750			33			-			783
	Total		$	150,476		$	5,095		$	(1,237	)	$	154,334
			31-Dec-13
						Gross			Gross
			Amortized			Unrealized			Unrealized			Fair
	(Dollar amounts in thousands)		Cost			Gains			Losses			Value
	U.S. government agency securities		$	27,289		$	135		$	(1,661	)	$	25,763
	Obligations of states and political subdivisions:
	Taxable			3,787			46			(38	)		3,795
	Tax-exempt			86,524			1,562			(3,267	)		84,819
	Mortgage-backed securities in government-sponsored entities			38,816			535			(1,028	)		38,323
	Private-label mortgage-backed securities			3,366			327			-			3,693
	Total debt securities			159,782			2,605			(5,994	)		156,393
	Equity securities in financial institutions			750			-			-			750
	Total		$	160,532		$	2,605		$	(5,994	)	$	157,143
	The amortized cost and fair value of debt securities at December 31, 2014, by contractual maturity, are shown below. Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.
			Amortized			Fair
	(Dollar amounts in thousands)		Cost			Value
	Due in one year or less		$	571		$	585
	Due after one year through five years			10,029			10,200
	Due after five years through ten years			20,960			21,602
	Due after ten years			118,166			121,164
	Total		$	149,726		$	153,551
	Investment securities with an approximate carrying value of $61.9 million and $66.3 million at December 31, 2014 and 2013, respectively, were pledged to secure deposits and other purposes as required by law.
	Proceeds from the sales of securities available for sale and the gross realized gains and losses for the years ended December, 31 are as follows (in thousands):
			2014			2013			2012
	Proceeds from sales		$	8,383		$	25,088		$	32,985
	Gross realized gains			306			186			704
	Gross realized losses			(58	)		(175	)		(94	)
	The following tables show the Company’s gross unrealized losses and fair value, aggregated by investment category and length of time that the individual securities have been in a continuous unrealized loss position.
			31-Dec-14
			Less than Twelve Months						Twelve Months or Greater						Total
						Gross						Gross					Gross
			Fair			Unrealized			Fair			Unrealized			Fair		Unrealized
	(Dollar amounts in thousands)		Value			Losses			Value			Losses			Value		Losses
	U.S. government agency securities		$	-		$	-		$	15,734		$	(450	)	$	15,734	$	(450	)
	Obligations of states and political subdivisions
	Tax-exempt			2,406			(10	)		18,232			(543	)		20,638		(553	)
	Mortgage-backed securities in government-sponsored entities			-			-			16,774			(234	)		16,774		(234	)
	Total		$	2,406		$	(10	)	$	50,740		$	(1,227	)	$	53,146	$	(1,237	)
			31-Dec-13
			Less than Twelve Months						Twelve Months or Greater						Total
						Gross						Gross					Gross
			Fair			Unrealized			Fair			Unrealized			Fair		Unrealized
	(Dollar amounts in thousands)		Value			Losses			Value			Losses			Value		Losses
	U.S. government agency securities		$	13,130		$	(929	)	$	7,166		$	(732	)	$	20,295	$	(1,661	)
	Obligations of states and political subdivisions
	Taxable			1,301			(38	)		-			-			1,301		(38	)
	Tax-exempt			26,743			(2,883	)		2,678			(383	)		29,421		(3,267	)
	Mortgage-backed securities in government-sponsored entities			18,082			(757	)		5,248			(271	)		23,330		(1,028	)
	Total		$	59,255		$	(4,608	)	$	15,092		$	(1,386	)	$	74,347	$	(5,994	)
There were 66 securities that were considered temporarily impaired at December 31, 2014.
On a quarterly basis, the Company performs an assessment to determine whether there have been any events or economic circumstances indicating that a security with an unrealized loss has suffered other-than-temporary impairment (“OTTI”). A debt security is considered impaired if the fair value is less than its amortized cost basis at the reporting date. The accounting literature requires the Company to assess whether the unrealized loss is other than temporary. For equity securities where the fair value has been significantly below cost for one year, the Company’s policy is to recognize an impairment loss unless sufficient evidence is available that the decline is not other than temporary and a recovery period can be predicted.
The Company has asserted that at December 31, 2014 and 2013, the declines outlined in the above table represent temporary declines and the Company does not intend to sell and does not believe it will be required to sell these securities before recovery of their cost basis, which may be at maturity. The Company has concluded that any impairment of its investment securities portfolio outlined in the above table is not other than temporary and is the result of interest rate changes, sector credit rating changes, or company-specific rating changes that are not expected to result in the non-collection of principal and interest during the period.
Debt securities issued by U.S. government agencies, U.S. government-sponsored enterprises, and state and political subdivisions accounted for more than 97.6% of the total available-for-sale portfolio as of December 31, 2014, and no credit losses are expected, given the explicit and implicit guarantees provided by the U.S. federal government and the lack of significant unrealized loss positions within the obligations of state and political subdivisions security portfolio. The Company evaluates credit losses on a quarterly basis. The Company considered the following factors in determining whether a credit loss exists and the period over which the debt security is expected to recover:
	●	The length of time and the extent to which the fair value has been less than the amortized cost basis.
	●	Changes in the near term prospects of the underlying collateral of a security such as changes in default rates, loss severity given default and significant changes in prepayment assumptions.
	●	The level of cash flows generated from the underlying collateral supporting the principal and interest payments of the debt securities.
	●	Any adverse change to the credit conditions and liquidity of the issuer, taking into consideration the latest information available about the overall financial condition of the issuer, credit ratings, recent legislation, and government actions affecting the issuer’s industry and actions taken by the issuer to deal with the present economic climate.

Note_4_Loans_and_Related_Allow

Note 4 - Loans and Related Allowance for Loan Losses	12 Months Ended
	Dec. 31, 2014
Receivables [Abstract]
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]	4	LOANS AND RELATED ALLOWANCE FOR LOAN LOSSES
	Major classifications of loans at December 31 are summarized as follows (in thousands):
			2014			2013
	Commercial and industrial		$	60,744		$	54,498
	Real estate - construction			30,296			25,601
	Real estate - mortgage:
	Residential			227,552			210,310
	Commercial			147,413			141,171
	Consumer installment			4,579			4,145
				470,584			435,725
	Less allowance for loan and lease losses			(6,846	)		(7,046	)
	Net loans		$	463,738		$	428,679
	The Company’s primary business activity is with customers located within its local trade area, eastern Geauga County, and contiguous counties to the north, east, and south. The Company also serves the central Ohio market with offices in Dublin and Westerville, Ohio. Commercial, residential, consumer, and agricultural loans are granted. Although the Company has a diversified loan portfolio at December 31, 2014 and 2013, loans outstanding to individuals and businesses are dependent upon the local economic conditions in its immediate trade area.
	The following tables summarize the primary segments of the loan portfolio and the allowance for loan and lease losses as of December 31, 2014 and 2013 (in thousands):
									Real Estate- Mortgage
	31-Dec-14		Commercial and industrial			Real estate- construction			Residential			Commercial			Consumer installment			Total
	Loans:
	Individually evaluated for impairment		$	1,393		$	3,296		$	5,183		$	4,490		$	6		$	14,368
	Collectively evaluated for impairment			59,351			27,000			222,369			142,923			4,573			456,216
	Total loans		$	60,744		$	30,296		$	227,552		$	147,413		$	4,579		$	470,584
									Real estate- Mortgage
	31-Dec-13		Commercial and industrial			Real estate- construction			Residential			Commercial			Consumer installment			Total
	Loans:
	Individually evaluated for impairment		$	1,891		$	4,011		$	5,882		$	7,175		$	6		$	18,965
	Collectively evaluated for impairment			52,607			21,590			204,428			133,996			4,139			416,760
	Total loans		$	54,498		$	25,601		$	210,310		$	141,171		$	4,145		$	435,725
									Real Estate- Mortgage
	31-Dec-14		Commercial and industrial			Real estate- construction			Residential			Commercial			Consumer installment			Total
	Allowance for loan and lease losses:
	Ending allowance balance attributable to loans:
	Individually evaluated for impairment		$	83		$	589		$	892		$	30		$	2		$	1,596
	Collectively evaluated for impairment			559			279			2,811			1,546			55			5,250
	Total ending allowance balance		$	642		$	868		$	3,703		$	1,576		$	57		$	6,846
									Real Estate- Mortgage
	31-Dec-13		Commercial and industrial			Real estate- construction			Residential			Commercial			Consumer installment			Total
	Allowance for loan and lease losses:
	Ending allowance balance attributable to loans:
	Individually evaluated for impairment		$	179		$	210		$	855		$	563		$	-		$	1,807
	Collectively evaluated for impairment			435			366			2,809			1,607			22			5,239
	Total ending allowance balance		$	614		$	576		$	3,664		$	2,170		$	22		$	7,046
	The Company’s loan portfolio is segmented to a level that allows management to monitor risk and performance. The portfolio is segmented into Commercial and Industrial (“C&I”), Real Estate Construction, Real Estate - Mortgage which is further segmented into Residential and Commercial real estate, and Consumer Installment Loans. The C&I loan segment consists of loans made for the purpose of financing the activities of commercial customers. The residential mortgage loan segment consists of loans made for the purpose of financing the activities of residential homeowners. The commercial mortgage loan segment consists of loans made for the purpose of financing the activities of commercial real estate owners and operators. The consumer loan segment consists primarily of installment loans and overdraft lines of credit connected with customer deposit accounts.
	Management evaluates individual loans in all of the commercial segments for possible impairment if the loan is greater than $150,000 and if the loan either is in nonaccrual status, or is risk rated Substandard or Doubtful and is greater than 90 days past due. Loans are considered to be impaired when, based on current information and events, it is probable that the Company will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. Factors considered by management in evaluating impairment include payment status, collateral value, and the probability of collecting scheduled principal and interest payments when due. Management determines the significance of payment delays and payment shortfalls on a case-by-case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower’s prior payment record, and the amount of the shortfall in relation to the principal and interest owed. The Company does not separately evaluate individual consumer and residential mortgage loans for impairment, unless such loans are part of a larger relationship that is impaired.
	Once the determination has been made that a loan is impaired, the determination of whether a specific allocation of the allowance is necessary is measured by comparing the recorded investment in the loan to the fair value of the loan using one of three methods: (a) the present value of expected future cash flows discounted at the loan’s effective interest rate; (b) the loan’s observable market price; or (c) the fair value of the collateral less selling costs. The method is selected on a loan-by-loan basis, with management primarily utilizing the fair value of collateral method. The evaluation of the need and amount of a specific allocation of the allowance and whether a loan can be removed from impairment status is made on a quarterly basis. The Company’s policy for recognizing interest income on impaired loans does not differ from its overall policy for interest recognition.
	The following tables present impaired loans by class, segregated by those for which a specific allowance was required and those for which a specific allowance was not necessary (in thousands):
	31-Dec-14
	Impaired Loans
			Recorded			Unpaid Principal			Related
			Investment			Balance			Allowance
	With no related allowance recorded:
	Commercial and industrial		$	1,146		$	1,145		$	-
	Real estate - construction			2,707			2,705			-
	Real estate - mortgage:
	Residential			2,202			2,197			-
	Commercial			4,064			4,060			-
	Total		$	10,119		$	10,107		$	-
	With an allowance recorded:
	Commercial and industrial		$	247		$	247		$	83
	Real estate - construction			589			589			589
	Real estate - mortgage:
	Residential			2,981			2,978			892
	Commercial			426			426			30
	Consumer installment			6			6			2
	Total		$	4,249		$	4,246		$	1,596
	Total:
Commercial and industrial		$	1,393		$	1,392		$	83
Real estate - construction			3,296			3,294			589
Real estate - mortgage:
Residential			5,183			5,175			892
Commercial			4,490			4,486			30
Consumer installment			6			6			2
Total		$	14,368		$	14,353		$	1,596
31-Dec-13
Impaired Loans
		Recorded			Unpaid Principal			Related
		Investment			Balance			Allowance
With no related allowance recorded:
Commercial and industrial		$	1,357		$	1,357		$	-
Real estate - construction			124			124			-
Real estate - mortgage:
Residential			2,704			2,892			-
Commercial			5,093			5,093			-
Consumer installment			6			6			-
Total		$	9,284		$	9,472		$	-
With an allowance recorded:
Commercial and industrial		$	534		$	534		$	179
Real estate - construction			3,887			3,887			210
Real estate - mortgage:
Residential			3,178			3,217			855
Commercial			2,082			2,082			563
Consumer installment			-			-			-
Total		$	9,681		$	9,720		$	1,807
Total:
Commercial and industrial		$	1,891		$	1,891		$	179
Real estate - construction			4,011			4,011			210
Real estate - mortgage:
Residential			5,882			6,109			855
Commercial			7,175			7,175			563
Consumer installment			6			6			-
Total		$	18,965		$	19,192		$	1,807
The tables above include troubled debt restructuring totaling $2.9 million and $5.5 million as of December 31, 2014 and 2013, respectively.
The following table presents interest income by class, recognized on impaired loans (in thousands):
		As of December 31, 2014						As of December 31, 2013						As of December 31, 2012
		Average Recorded Investment			Interest Income Recognized			Average Recorded Investment			Interest Income Recognized			Average Recorded Investment			Interest Income Recognized
Commercial and industrial		$	1,989		$	85		$	2,187		$	119		$	2,776		$	348
Real estate - construction			3,631			154			3,743			183			2,798			156
Real estate - mortgage:
Residential			5,331			171			5,380			293			4,263			338
Commercial			5,998			229			6,500			493			4,717			543
Consumer installment			11			1			13			1			27			3
Total		$	16,960		$	640		$	17,824		$	1,090		$	14,582		$	1,388
Troubled Debt Restructuring (TDR) describes loans on which the bank has granted concessions for reasons related to the customer’s financial difficulties. Such concessions may include one or more of the following:
	●	reduction in the interest rate to below market rates
	●	extension of repayment requirements beyond normal terms
	●	reduction of the principal amount owed
	●	reduction of accrued interest due
	●	acceptance of other assets in full or partial payment of a debt
In each case the concession is made due to deterioration in the borrower’s financial condition, and the new terms are less stringent than those required on a new loan with similar risk.
The following tables present the number of loan modifications by class, the corresponding recorded investment, and the subsequently defaulted modifications (in thousands):
Modifications
For the year ended of December 31, 2014
		Number of Contracts
Troubled Debt Restructurings		Rate			Other			Total			Pre-Modification Outstanding Recorded Investment
		Forgiveness
Real estate- mortgage:
Residential			-			3			3		$	140
Commercial			-			1			1			48
Consumer Installment			1			-			1			6
Troubled Debt Restructurings subsequently defaulted		Number of Contracts			Recorded Investment
Real estate- mortgage:
Residential			1		$	15
Modifications
For the year ended of December 31, 2013
		Number of Contracts
Troubled Debt Restructurings		Rate Forgiveness			Other			Total			Pre-Modification Outstanding Recorded Investment
Commercial and industrial			6			1			7		$	1,264
Real estate- mortgage:
Residential			7			-			7			784
Commercial			2			-			2			834
Troubled Debt Restructurings subsequently defaulted		Number of  Contracts			Recorded Investment
Commercial and industrial			5		$	574
Real estate- mortgage:
Commercial			1			190
Modifications
For the year ended of December 31, 2012
		Number of Contracts
Troubled Debt Restructurings		Rate			Other			Total			Pre-Modification Outstanding Recorded Investment
		Forgiveness
Commercial and industrial			1			12			13		$	489
Real estate- mortgage:
Residential			2			7			9			921
Commercial			-			1			1			156
Consumer Installment			-			2			2			11
Troubled Debt Restructurings subsequently defaulted		Number of Contracts			Recorded Investment
Commercial and industrial			6		$	256
Real estate- construction			1			3,622
Real estate- mortgage:
Residential			2			89
Consumer Installment			1			5
The Company does not forgive principal upon troubled debt restructuring. Therefore, the post-modification outstanding recorded investment equals pre-modification outstanding recorded investment for each timeframe and category.
Management uses a nine-point internal risk-rating system to monitor the credit quality of the overall loan portfolio. The first five categories are considered not criticized and are aggregated as Pass-rated. The criticized rating categories utilized by management generally follow bank regulatory definitions. The Special Mention category includes assets that are currently protected but are potentially weak, resulting in an undue and unwarranted credit risk, but not to the point of justifying a Substandard classification.  Loans in the Substandard category have well-defined weaknesses that jeopardize the liquidation of the debt and have a distinct possibility that some loss will be sustained if the weaknesses are not corrected.  All loans greater than 90 days past due are considered Substandard.   Any portion of a loan that has been charged off is placed in the Loss category.
To help ensure that risk ratings are accurate and reflect the present and future capacity of borrowers to repay a loan as agreed, the Company has a structured loan-rating process with several layers of internal and external oversight.  Generally, consumer and residential mortgage loans are included in the Pass categories unless a specific action, such as bankruptcy, repossession, or death, occurs to raise awareness of a possible credit event.  The Company’s Commercial Loan Officers are responsible for the timely and accurate risk rating of the loans in their portfolios at origination and on an ongoing basis with the Chief Credit Officer ultimately responsible for accurate and timely risk ratings.  The Credit Department performs an annual review of all commercial relationships $1,000,000 or greater.  Confirmation of the appropriate risk grade is included in the review on an ongoing basis.  The Company engages an external consultant to conduct loan reviews on a semiannual basis. Generally, the external consultant reviews commercial relationships greater than $250,000 and/or criticized relationships greater than $125,000. Detailed reviews, including plans for resolution, are performed on loans classified as Substandard on a quarterly basis.  Loans in the Special Mention and Substandard categories that are collectively evaluated for impairment are given separate consideration in the determination of the allowance.
The following tables present the classes of the loan portfolio summarized by the aggregate Pass rating and the criticized categories of Special Mention, Substandard, and Doubtful within the internal risk rating system as of December 31, 2014 and 2013 (in thousands):
					Special									Total
		Pass			Mention			Substandard			Doubtful			Loans
31-Dec-14
Commercial and industrial		$	58,976		$	-		$	1,730		$	38		$	60,744
Real estate - construction			29,212			495			-			589			30,296
Real estate - mortgage:
Residential			218,244			584			8,724			-			227,552
Commercial			137,755			3,908			5,750			-			147,413
Consumer installment			4,572			-			7			-			4,579
Total		$	448,759		$	4,987		$	16,211		$	627		$	470,584
					Special									Total
		Pass			Mention			Substandard			Doubtful			Loans
31-Dec-13
Commercial and industrial		$	52,078		$	772		$	1,605		$	43		$	54,498
Real estate - construction			24,052			907			642			-			25,601
Real estate - mortgage:
Residential			198,479			774			11,057			-			210,310
Commercial			132,931			2,232			6,008			-			141,171
Consumer installment			4,129			-			16			-			4,145
Total		$	411,669		$	4,685		$	19,328		$	43		$	435,725
Management further monitors the performance and credit quality of the loan portfolio by analyzing the age of the portfolio as determined by the length of time a recorded payment is past due. The following tables present the classes of the loan portfolio summarized by the aging categories of loans as of December 31, 2014 and 2013 (in thousands):
					30-59 Days			60-89 Days			90 Days+			Total			Total
		Current			Past Due			Past Due			Past Due			Past Due			Loans
31-Dec-14
Commercial and industrial		$	60,296		$	349		$	68		$	31		$	448		$	60,744
Real estate - construction			30,296			-			-			-			-			30,296
Real estate - mortgage:
Residential			223,209			2,065			363			1,915			4,343			227,552
Commercial			146,816			30			-			567			597			147,413
Consumer installment			4,547			27			3			2			32			4,579
Total		$	465,164		$	2,471		$	434		$	2,515		$	5,420		$	470,584
					30-59 Days			60-89 Days			90 Days+			Total			Total
		Current			Past Due			Past Due			Past Due			Past Due			Loans
31-Dec-13
Commercial and industrial		$	53,440		$	529		$	359		$	170		$	1,058		$	54,498
Real estate - construction			24,945			17			639			-			656			25,601
Real estate - mortgage:
Residential			203,747			3,082			481			3,000			6,563			210,310
Commercial			140,251			645			100			175			920			141,171
Consumer installment			4,083			43			19			-			62			4,145
Total		$	426,466		$	4,316		$	1,598		$	3,345		$	9,259		$	435,725
The following tables present the classes of the loan portfolio summarized by nonaccrual loans and loans 90 days or more past due and still accruing as of December 31, 2014 and 2013 (in thousands):
					90+ Days Past
		Nonaccrual			Due and Accruing
31-Dec-14
Commercial and industrial		$	365		$	-
Real estate - construction			587			-
Real estate - mortgage:
Residential			5,438			165
Commercial			955			-
Consumer installment			2			-
Total		$	7,347		$	165
					90+ Days Past
		Nonaccrual			Due and Accruing
31-Dec-13
Commercial and industrial		$	176		$	38
Real estate - construction			-			-
Real estate - mortgage:
Residential			7,411			143
Commercial			743			-
Consumer installment			8			-
Total		$	8,338		$	181
Interest income that would have been recorded had these loans not been placed on nonaccrual status was $207,000 in 2014; $439,000 in 2013; and $756,000 in 2012.
An allowance for loan and lease losses (“ALLL”) is maintained to absorb losses from the loan portfolio.  The ALLL is based on management’s continuing evaluation of the risk characteristics and credit quality of the loan portfolio, assessment of current economic conditions, diversification and size of the portfolio, adequacy of collateral, past and anticipated loss experience, and the amount of nonperforming loans.
The Company’s methodology for determining the ALLL is based on the requirements of ASC Section 310-10-35 for loans individually evaluated for impairment (discussed above) and ASC Subtopic 450-20 for loans collectively evaluated for impairment, as well as the Interagency Policy Statement on the Allowance for Loan and Lease Losses and other bank regulatory guidance.   The total of the two components represents the Company’s ALLL.
Loans that are collectively evaluated for impairment are analyzed, with general allowances being made as appropriate.  For general allowances, historical loss trends are used in the estimation of losses in the current portfolio.  These historical loss amounts are modified by other qualitative factors.
The classes described above, which are based on the purpose code assigned to each loan, provide the starting point for the ALLL analysis.  Management tracks the historical net charge-off activity at the purpose code level.  A historical charge-off factor is calculated utilizing the last twelve consecutive quarters.
Management has identified a number of additional qualitative factors which it uses to supplement the historical charge-off factor, because these factors are likely to cause estimated credit losses associated with the existing loan pools to differ from historical loss experience.  The additional factors that are evaluated quarterly and updated using information obtained from internal, regulatory, and governmental sources are: national and local economic trends and conditions; levels of and trends in delinquency rates and nonaccrual loans; trends in volumes and terms of loans; effects of changes in lending policies; experience, ability, and depth of lending staff; value of underlying collateral; and concentrations of credit from a loan type, industry, and/or geographic standpoint.
Management reviews the loan portfolio on a quarterly basis using a defined, consistently applied process in order to make appropriate and timely adjustments to the ALLL.  When information confirms all or part of specific loans to be uncollectible, these amounts are promptly charged off against the ALLL.
The following tables summarize the primary segments of the loan portfolio (in thousands):
		Commercial and industrial			Real estate- construction			Real estate- residential mortgage			Real estate- commercial mortgage			Consumer installment			Total
ALLL balance at December 31, 2013		$	614		$	576		$	3,664		$	2,170		$	22		$	7,046
Charge-offs			(237	)		-			(671	)		(260	)		(44	)		(1,212	)
Recoveries			121			60			267			40			154			642
Provision			144			232			443			(374	)		(75	)		370
ALLL balance at December 31, 2014		$	642		$	868		$	3,703		$	1,576		$	57		$	6,846
		Commercial and industrial			Real estate- construction			Real estate- residential mortgage			Real estate- commercial mortgage			Consumer installment			Total
ALLL balance at December 31, 2012		$	1,732		$	1,123		$	2,872		$	1,991		$	61		$	7,779
Charge-offs			(419	)		(191	)		(675	)		-			(45	)		(1,330	)
Recoveries			191			33			107			46			24			401
Provision			(890	)		(389	)		1,360			133			(18	)		196
ALLL balance at December 31, 2013		$	614		$	576		$	3,664		$	2,170		$	22		$	7,046
		Commercial and industrial			Real estate- construction			Real estate- residential mortgage			Real estate- commercial mortgage			Consumer installment			Total
ALLL balance at December 31, 2011		$	1,296		$	438		$	3,731		$	1,306		$	48		$	6,819
Charge-offs			(230	)		(135	)		(785	)		(123	)		(64	)		(1,337	)
Recoveries			71			-			31			-			27			129
Provision			595			820			(105	)		808			50			2,168
ALLL balance at December 31, 2012		$	1,732		$	1,123		$	2,872		$	1,991		$	61		$	7,779
The real estate construction balance increased from $0.6 million at December 31, 2013 to $0.9 million at December 31, 2014. This is entirely the result of one construction loan. Commercial real estate ALLL decreased from $2.2 million to $1.6 million during the year ended December 31, 2014. This was largely the result of payoff of a loan with $0.5 million of ALLL. A provision in any loan portfolio is not necessarily related to current charge-offs, but is a result of the evaluation of the loans in that category.

Note_5_Premises_and_Equipment

Note 5 - Premises and Equipment	12 Months Ended
	Dec. 31, 2014
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment Disclosure [Text Block]	5	PREMISES AND EQUIPMENT
	Major classifications of premises and equipment at December 31 are summarized as follows:
	(Dollar amounts in thousands)		2014		2013
	Land and land improvements		$	1,943	$	1,943
	Building and leasehold improvements			11,133		10,832
	Furniture, fixtures, and equipment			4,637		4,036
				17,713		16,811
	Less accumulated depreciation and amortization			7,733		6,983
	Total		$	9,980	$	9,828
	Depreciation and amortization charged to operations was $750,000 in 2014, $676,000 in 2013, and $591,000 in 2012.

Note_6_Goodwill_and_Intangible

Note 6 - Goodwill and Intangible Assets	12 Months Ended
	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets Disclosure [Text Block]	6	GOODWILL AND INTANGIBLE ASSETS
	Goodwill totaled $4,559,000 at the years ended December 31, 2014, and 2013. Core deposit intangible carrying amount was $116,000 and $156,000 for the years ended December 31, 2014, and 2013. Core deposit accumulated amortization was $280,000 and $240,000 for the years ended December 31, 2014, and 2013.
	Core deposit intangible assets are amortized on a straight-line basis over their estimated lives of ten years. Amortization expense totaled $40,000 in 2014, 2013, and 2012, respectively. The estimated aggregate future amortization expense for core deposit intangible assets as of December 31, 2014, is as follows (in thousands):
	2015		$	40,000
	2016			40,000
	2017			36,000
	Total		$	116,000

Note_7_Other_Assets

Note 7 - Other Assets	12 Months Ended
	Dec. 31, 2014
Disclosure Text Block Supplement [Abstract]
Other Assets Disclosure [Text Block]	7	OTHER ASSETS
	The components of other assets at year ended December 31 are as follows:
	(Dollar amounts in thousands)		2014		2013
	FHLB stock		$	1,887	$	1,887
	Accrued interest on investment securities			1,005		1,029
	Accrued interest on loans			1,090		1,106
	Deferred tax asset, net			1,484		3,688
	Other real estate owned			2,590		2,698
	Other			1,579		1,308
	Total		$	9,635	$	11,716

Note_8_Deposits

Note 8 - Deposits	12 Months Ended
	Dec. 31, 2014
Disclosure Text Block [Abstract]
Deposit Liabilities Disclosures [Text Block]	8	DEPOSITS
	Time deposits at December 31, 2014, mature $100.1 million, $31.8 million, $13.0 million, $13.5 million, and $11.5 million during 2015, 2016, 2017, 2018, and 2019 respectively.
	The aggregate of all time deposit accounts of $250,000 or more amounted to $54.6 million and $18.0 million at December 31, 2014 and 2013, respectively.

Note_9_Shortterm_Borrowings

Note 9 - Short-term Borrowings	12 Months Ended
	Dec. 31, 2014
Disclosure Text Block [Abstract]
Short-term Debt [Text Block]	9	SHORT-TERM BORROWINGS
	The year ended December 31 outstanding balances and related information of short-term borrowings, which includes securities sold under agreements to repurchase and short-term borrowings from other banks, are summarized as follows:
	(Dollar amounts in thousands)		2014			2013
	Balance at year-end		$	14,808		$	10,809
	Average balance outstanding			8,379			8,806
	Maximum month-end balance			19,970			17,351
	Weighted-average rate at year-end			0.98	%		1.44	%
	Weighted-average rate during the year			1.77	%		3.15	%
	Average balances outstanding during the year represent daily average balances, and average interest rates represent interest expense divided by the related average balance.
	The Company maintains a $4.0 million line of credit at an adjustable rate, currently 3.66%, and a $3.0 million line of credit at an adjustable rate, currently at 4.00%. At December 31, 2014, 2013, and 2012, outstanding borrowings under these lines were $3.1 million, $3.9 million, and $4.9 million, respectively.

Note_10_Other_Borrowings

Note 10 - Other Borrowings	12 Months Ended
	Dec. 31, 2014
Other Borrowings [Abstract]
Other Borrowings [Text Block]	10	OTHER BORROWINGS
	Other borrowings consist of advances from the FHLB and subordinated debt as follows:
								Weighted-			Stated interest
	(Dollar amounts in thousands)		Maturity range					average			rate range
	Description		from			to		interest rate			from			to			2014		2013
	Fixed-rate amortizing			6/1/15		10/1/28			4	%		2.99	%	4.48	%	$	2,376	$	3,361
	Junior subordinated debt			12/21/37		12/21/37			1.9	%		1.89		1.91			8,248		8,248
	Total															$	10,624	$	11,609
	The scheduled maturities of other borrowings are as follows:
	(Dollar amounts in thousands)
					Weighted-
	Year Ending December 31,		Amount		Average Rate
	2015		$	685		4.01	%
	2016			502		4	%
	2017			373		4	%
	2018			252		4.02	%
	2019			155		4.04	%
	Beyond 2019			8,657		2	%
	Total		$	10,624		2.37	%
	Fixed-rate amortizing advances from the FHLB require monthly principal and interest payments and an annual 20 percent paydown of outstanding principal. Monthly principal and interest payments are adjusted after each 20 percent paydown. Under the terms of a blanket agreement, FHLB borrowings are secured by certain qualifying assets of the Company which consist principally of first mortgage loans or mortgage-backed securities. Under this credit arrangement, the Company has a remaining borrowing capacity of approximately $87.9 million at December 31, 2014.
	The Company formed a special purpose entity (“Entity”) to issue $8,000,000 of floating rate, obligated mandatorily redeemable securities, and $248,000 in common securities as part of a pooled offering. The rate adjusts quarterly, equal to LIBOR plus 1.67%. The Entity may redeem them, in whole or in part, at face value. The Company borrowed the proceeds of the issuance from the Entity in December 2006 in the form of an $8,248,000 note payable, which is included in the other borrowings on the Company’s Consolidated Balance Sheet.

Note_11_Other_Liabilities

Note 11 - Other Liabilities	12 Months Ended
	Dec. 31, 2014
Other Liabilities and Financial Instruments Subject to Mandatory Redemption [Abstract]
Other Liabilities Disclosure [Text Block]	11	OTHER LIABILITIES
	The components of other liabilities are as follows:
			2014		2013
	(Dollar amounts in thousands)
	Accrued interest payable		$	315	$	364
	Supplemental Executive Retirement Plan			828		727
	Accrued salary expense			609		580
	Other			368		692
	Total		$	2,120	$	2,363

Note_12_Income_Taxes

Note 12 - Income Taxes	12 Months Ended
	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Text Block]	12	INCOME TAXES
	The provision for federal income taxes consists of:
	(Dollar amounts in thousands)		2014			2013			2012
	Current payable		$	2,146		$	1,556		$	1,660
	Deferred			(154	)		423			2
	Total provision		$	1,992		$	1,979		$	1,662
	The tax effects of deductible and taxable temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities are as follows:
	(Dollar amounts in thousands)		2014			2013
	Deferred tax assets:
	Allowance for loan and lease losses		$	2,328		$	2,396
	Net unrealized loss on securities			-			1,152
	Supplemental retirement plan			282			247
	Investment security basis adjustment			66			66
	Nonaccrual interest income			444			472
	Deferred origination fees, net			295			171
	OREO adjustments			94			107
	Accrued compensation			207			197
	Other			14			19
	Gross deferred tax assets			3,730			4,827
	Deferred tax liabilities:
	Premises and equipment			385			503
	Net unrealized gain on securities			1,311			-
	FHLB stock dividends			225			225
	Intangibles			353			304
	Other			77			107
	Gross deferred tax liabilities			2,351			1,139
	Net deferred tax assets		$	1,379		$	3,688
	No valuation allowance was established at December 31, 2014 and 2013, in view of the Company’s ability to carry-back to taxes paid in previous years and certain tax strategies, coupled with the anticipated future taxable income as evidenced by the Company's earnings potential.
	The reconciliation between the federal statutory rate and the Company’s effective consolidated income tax rate is as follows:
	(Dollar amounts in thousands)		2014						2013						2012
						% of						% of						% of
						Pretax						Pretax						Pretax
			Amount			Income			Amount			Income			Amount			Income
	Provision at statutory rate		$	3,119			34	% $		3,062			34	% $		2,700			34	%
	Tax-free income			(1,187	)		(12.9	)		(1,138	)		(12.6	)		(1,095	)		(13.8	)
	Nondeductible interest expense			37			0.4			45			0.5			48			0.6
	Other			23			0.2			10			0.1			9			0.1
	Actual tax expense and effective rate		$	1,992			21.7	% $		1,979			22	% $		1,662			20.9	%
	ASC 740‐10 prescribes a recognition threshold and a measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. Benefits from tax positions should be recognized in the financial statements only when it is more likely than not that the tax position will be sustained upon examination by the appropriate taxing authority that would have full knowledge of all relevant information. A tax position that meets the more‐likely‐than‐not recognition threshold is measured at the largest amount of benefit that is greater than 50 percent likely of being realized upon ultimate settlement. Tax positions that previously failed to meet the more‐likely‐than‐not recognition threshold should be recognized in the first subsequent financial reporting period in which that threshold is met. Previously recognized tax positions that no longer meet the more‐likely‐than‐not recognition threshold should be derecognized in the first subsequent financial reporting period in which that threshold is no longer met.
	At December 31, 2014 and December 31, 2013, the Company had no unrecognized tax benefits. The Company does not expect the total amount of unrecognized tax benefits to significantly increase within the next 12 months. The Company recognizes interest and penalties on unrecognized tax benefits as a component of income tax expense.
	The Company and the Bank are subject to U.S. federal income tax as well as an income tax in the state of Ohio, and the Bank is subject to a capital‐based franchise tax in the state of Ohio. The Company and the Bank are no longer subject to examination by taxing authorities for years before December 31, 2011.

Note_13_Employee_Benefits

Note 13 - Employee Benefits	12 Months Ended
	Dec. 31, 2014
Disclosure Text Block Supplement [Abstract]
Compensation and Employee Benefit Plans [Text Block]	13	EMPLOYEE BENEFITS
	Retirement Plan
	The Bank maintains section 401(k) employee savings and investment plans for all full-time employees and officers of the Bank with more than one year of service. The Bank’s contributions to the plans are based on 50 percent matching of voluntary contributions up to 6 percent of compensation. An eligible employee can contribute up to 100 percent of salary. Employee contributions are vested at all times, and MBC contributions are fully vested after six years beginning at the second year in 20 percent increments. Contributions for 2014, 2013, and 2012 to these plans amounted to $143,000, $155,000, and $125,000, respectively.
	Supplemental Retirement Plan
	MBC maintains a Directors’ Retirement Plan to provide postretirement payments over a ten-year period to members of the Board of Directors who have completed five or more years of service. The plan requires payment of 25 percent of the final average annual board fees paid to a director in the three years preceding the director’s retirement.
	The following table illustrates the components of the projected payments for the Directors’ Retirement Plan for the years ended:
			Projected Payments
	2015		$	34,000
	2016			29,000
	2017			23,000
	2018			18,000
	2019			12,000
	Thereafter			12,000
	Total		$	128,000
	The retirement plan is available solely for nonemployee directors of The Middlefield Banking Company, but the Bank has not entered into any additional retirement arrangements for nonemployee directors since 2001. All director participants have retired.
	Executive Deferred Compensation Plan
	The Company maintains an Executive Deferred Compensation Plan (the “Plan”) to provide post-retirement payments to members of senior management. The Plan agreements are noncontributory, defined contribution arrangements that provide supplemental retirement income benefits to five officers, with contributions made solely by the Banks. During 2014, 2013, and 2012, the Company contributed $115,000, $120,000, and $139,000, respectively, to the Plan.
	Stock Option and Restricted Stock Plan
	The Company maintains a stock option and restricted stock plan (“the Plan”) for granting incentive stock options, nonqualified stock options, and restricted stock to key officers and employees and nonemployee directors of the Company. A total of 160,000 shares of authorized and unissued or issued common stock were reserved for issuance under the Plan, which expires ten years from the date of stockholder ratification. The per share exercise price of an option granted will not be less than the fair value of a share of common stock on the date the option is granted.
	The following table presents share data related to the outstanding options:
						Weighted-					Weighted-
						average					average
						Exercise					Exercise
			2014			Price		2013			Price
	Outstanding, January 1		$	58,581		$	28.38	$	79,693		$	27.25
	Exercised			(11,223	)		30.45		(21,112	)		24.11
	Forfeited			(907	)		27.35		-			-
	Outstanding, December 31		$	46,451		$	27.9	$	58,581		$	28.38
	Exercisable, December 31		$	46,451		$	27.9	$	58,581		$	28.38
	The following table summarizes the characteristics of stock options at December 31, 2014:
						Outstanding							Exercisable
								Contractual			Average				Average
			Exercise					Average			Exercise				Exercise
	Grant Date		Price			Shares		Life			Price		Shares		Price
	14-Dec-05			36.73			7,163		0.95			36.73		7,163		36.73
	10-Dec-06			40.24			3,150		1.94			40.24		3,150		40.24
	19-Apr-07			37.33			3,639		2.29			37.33		3,639		37.33
	16-May-07			37.48			1,337		2.37			37.48		1,337		37.48
	10-Dec-07			37			2,450		2.94			37		2,450		37
	2-Jan-08			36.25			1,337		3			36.25		1,337		36.25
	10-Nov-08			23			18,500		3.86			23		18,500		23
	9-May-11			17.55			8,875		6.35			17.55		8,875		17.55
							46,451							46,451
	No options were granted for the years ended December 31, 2014 and 2013. During December 31, 2012, the Company granted 1,722 shares of common stock under the Omnibus Equity Plan. The Company recognizes compensation expense in the amount of fair value of the common stock at the grant date and as an addition to stockholders’ equity.

Note_14_Commitments

Note 14 - Commitments	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies Disclosure [Text Block]	14	COMMITMENTS
	In the normal course of business, there are various outstanding commitments and certain contingent liabilities which are not reflected in the accompanying consolidated financial statements. These commitments and contingent liabilities represent financial instruments with off-balance sheet risk. The contract or notional amounts of those instruments reflect the extent of involvement in particular types of financial instruments which were composed of the following:
	(Dollar amounts in thousands)		2014		2013
	Commitments to extend credit		$	97,947	$	120,861
	Standby letters of credit			4,514		4,809
	Total		$	102,461	$	125,670
	These instruments involve, to varying degrees, elements of credit and interest rate risk in excess of the amount recognized in the Consolidated Balance Sheet. The Company’s exposure to credit loss, in the event of nonperformance by the other parties to the financial instruments, is represented by the contractual amounts as disclosed. The Company minimizes its exposure to credit loss under these commitments by subjecting them to credit approval and review procedures and collateral requirements as deemed necessary. Commitments generally have fixed expiration dates within one year of their origination.
	Standby letters of credit are conditional commitments issued by the Company to guarantee the performance of a customer to a third party. Performance letters of credit represent conditional commitments issued by the Company to guarantee the performance of a customer to a third party. These instruments are issued primarily to support bid or performance-related contracts. The coverage period for these instruments is typically a one-year period with an annual renewal option subject to prior approval by management. Fees earned from the issuance of these letters are recognized over the coverage period. For secured letters of credit, the collateral is typically bank deposit instruments or customer business assets.
	Commitments to fund certain mortgage loans (interest rate locks) to be sold into the secondary market and forward contracts for the future delivery of these mortgage loans are considered derivatives. It is the Company’s practice to enter into the forward contracts for the future purchase of mortgage-backed securities when interest rate lock commitments are entered into in order to economically hedge the effect of changes in interest rates resulting from its commitments to fund the loans. These mortgage banking derivatives are not formally designated as hedge relationships. The derivative assets and liabilities are considered immaterial as of December 31, 2014. Associated income and expense is reported in gains on sale of loans.
	Leasing Arrangements
	The Company leases certain of its banking facilities under operating leases which contain certain renewal options. As of December 31, 2014, approximate future minimum rental payments, including the renewal options under these leases, are as follows (in thousands):
	2015		$	221
	2016			226
	2017			230
	2018			238
	2019			240
	Thereafter			203
			$	1,358
	The above amounts represent minimum rentals not adjusted for possible future increases due to escalation provisions and assume that all renewal option periods will be exercised by the Company. Rent expense approximated $269,000, $301,000, and $259,000 for the years ended December 31, 2014, 2013, and 2012, respectively.

Note_15_Regulatory_Restriction

Note 15 - Regulatory Restrictions	12 Months Ended
	Dec. 31, 2014
Banking and Thrift [Abstract]
Banking and Thrift Disclosure [Text Block]	15	REGULATORY RESTRICTIONS
	The Company is subject to the regulatory requirements of the Federal Reserve System as a bank holding company. The bank is subject to regulations of the Federal Deposit Insurance Corporation (“FDIC”) and the State of Ohio, Division of Financial Institutions.
	Since the establishment in the fourth quarter of 2009 of Middlefield Banc Corp.’s nonbank-asset resolution subsidiary, EMORECO, Inc., the Bank has sold $5.8 million of nonperforming assets to this subsidiary.
	Cash Requirements
	The Cleveland district Federal Reserve Bank requires the Company to maintain certain average reserve balances. As of December 31, 2014 and 2013, the Company had required reserves of $6.8 million and $7.4 million comprising vault cash and a depository amount held with the Federal Reserve Bank.
	Loans
	Federal law prevents the Company from borrowing from the Bank unless the loans are secured by specific obligations. Further, such secured loans are limited in amount of 10 percent of the Bank’s common stock and capital surplus.
	Dividends
	MBC is subject to dividend restrictions that generally limit the amount of dividends that can be paid by an Ohio state-chartered bank. Under the Ohio Banking Code, cash dividends may not exceed net profits as defined for that year combined with retained net profits for the two preceding years less any required transfers to surplus. Under this formula the amount available for payment of dividends for 2014 approximates $10.2 million plus 2015 profits retained up to the date of the dividend declaration. As a condition to the ODFI's approval of the merger of Emerald Bank into MBC, until the third anniversary of the merger, that is until January 20, 2017, MBC will have to obtain the ODFI's advance approval for dividend payments to the Company.
	Potential Restrictions
	On or about January 14, 2013 an investor to whom we sold a total of 196,635 shares in April of 2012, constituting 9.9% of our stock at the time, obtained from the Ohio Division of Financial Institutions and the Federal Reserve Bank of Cleveland regulatory clearance to acquire up to 24.99% of our stock. The August 15, 2011 Stock Purchase Agreement, as amended, under which we sold shares to the investor provided for sale of up to 24.99% of our stock, subject to the investor obtaining regulatory clearance and subject to other conditions. Although we disclosed in a Form 8-K Current Report filed with the SEC on January 18, 2013 that sale of additional shares to the investor under the terms of the Stock Purchase Agreement will not occur, if the investor nevertheless acquires shares and increases his ownership to 10% or more of our common stock, whether acquiring the shares on the open market or from us, we will become subject to additional restrictions under the terms of the regulatory clearance issued to the investor by the Ohio Division of Financial Institutions. Specifically, for three years after the investor becomes an owner of 10% or more of our stock, we would have to obtain advance approval of the ODFI in order for The Middlefield Banking Company to pay a dividend to Middlefield Banc Corp., and for 12 months we would have to obtain advance written approval of the ODFI for any changes in the composition of Middlefield Banc Corp.’s board or executive management.

Note_16_Regulatory_Capital

Note 16 - Regulatory Capital	12 Months Ended
	Dec. 31, 2014
Disclosure Text Block [Abstract]
Regulatory Capital Requirements under Banking Regulations [Text Block]	16	REGULATORY CAPITAL
	Federal regulations require the Company and the Bank to maintain minimum amounts of capital. Specifically, each is required to maintain certain minimum dollar amounts and ratios of Total and Tier I capital to risk-weighted assets and of Tier I capital to average total assets.
	In addition to the capital requirements, the Federal Deposit Insurance Corporation Improvement Act (“FDICIA”) established five capital categories ranging from “well capitalized” to “critically undercapitalized.” Should any institution fail to meet the requirements to be considered “adequately capitalized,” it would become subject to a series of increasingly restrictive regulatory actions.
	As of December 31, 2014 and 2013, the FDIC categorized the Bank as well capitalized under the regulatory framework for prompt corrective action. To be classified as a well-capitalized financial institution, Total risk-based, Tier 1 risk-based, and Tier 1 Leverage capital ratios must be at least 10 percent, 6 percent, and 5 percent, respectively.
	The Company’s and its subsidiary’s actual capital ratios are presented in the following table that shows that all regulatory capital requirements were met as of December 31, 2014.
			Middlefield Banc Corp.					The Middlefield Banking Co.
	(Dollar amounts in thousands)		31-Dec-14					31-Dec-14
			Amount		Ratio			Amount		Ratio
	Total Capital (to Risk-weighted Assets)
	Actual		$	70,693		14.64	%	$	68,325		14.19	%
	For Capital Adequacy Purposes			38,642		8	%		38,507		8	%
	To Be Well Capitalized			48,302		10	%		48,134		10	%
	Tier I Capital (to Risk-weighted Assets)
	Actual		$	64,645		13.38	%	$	62,315		12.95	%
	For Capital Adequacy Purposes			19,321		4	%		19,253		4	%
	To Be Well Capitalized			28,981		6	%		28,880		6	%
	Tier I Capital (to Average Assets)
	Actual		$	64,645		9.6	%	$	62,315		9.25	%
	For Capital Adequacy Purposes			26,945		4	%		26,945		4	%
	To Be Well Capitalized			33,682		5	%		33,682		5	%
	See Note 15 for additional information concerning regulatory capital requirements
	The Company’s and its subsidiaries’ actual capital ratios are presented in the following table that shows that all regulatory capital requirements were met as of December 31, 2013.
			Middlefield Banc Corp.					The Middlefield Banking Co.					Emerald Bank
			31-Dec-13					31-Dec-13					31-Dec-13
			Amount		Ratio			Amount		Ratio			Amount		Ratio
	Total Capital (to Risk-weighted Assets)
	Actual		$	64,220		14.06	%	$	53,194		13.77	%	$	9,482		13.76	%
	For Capital Adequacy Purposes			36,541		8	%		30,906		8	%		5,514		8	%
	To Be Well Capitalized			45,676		10	%		38,632		10	%		6,893		10	%
	Tier I Capital (to Risk-weighted Assets)
	Actual		$	58,494		12.81	%	$	48,364		12.52	%	$	8,605		12.48	%
	For Capital Adequacy Purposes			18,270		4	%		15,453		4	%		2,757		4	%
	To Be Well Capitalized			27,406		6	%		23,179		6	%		4,136		6	%
	Tier I Capital (to Average Assets)
	Actual		$	58,494		8.97	%	$	48,364		8.51	%	$	8,605		10.92	%
	For Capital Adequacy Purposes			26,093		4	%		22,735		4	%		3,152		4	%
	To Be Well Capitalized			32,617		5	%		28,419		5	%		3,940		5	%

Note_17_Fair_Value_Disclosure_

Note 17 - Fair Value Disclosure Measurements	12 Months Ended
	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Fair Value Disclosures [Text Block]	17	FAIR VALUE DISCLOSURE MEASUREMENTS
	The following disclosures show the hierarchal disclosure framework associated with the level of pricing observations utilized in measuring assets and liabilities at fair value. The three broad levels defined by U.S. generally accepted accounting principles are as follows:
	Level I:	Quoted prices are available in active markets for identical assets or liabilities as of the reported date.
	Level II:	Pricing inputs are other than the quoted prices in active markets, which are either directly or indirectly observable as of the reported date. The nature of these assets and liabilities includes items for which quoted prices are available but traded less frequently and items that are fair-valued using other financial instruments, the parameters of which can be directly observed.
	Level III:	Valuations derived from valuation techniques in which one or more significant inputs or significant value drivers are unobservable.
	This hierarchy requires the use of observable market data when available.
	The following tables present the assets measured on a recurring basis on the Consolidated Balance Sheet at their fair value as of December 31, 2014 and 2013, by level within the fair value hierarchy. Financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement.
					31-Dec-14
	(Dollar amounts in thousands)		Level I		Level II			Level III		Total
	Assets measured on a recurring basis:
	U.S. government agency securities		$	-	$	22,896		$	-	$	22,896
	Obligations of states and political subdivisions			-		98,345			-		98,345
	Mortgage-backed securities in government- sponsored entities			-		29,391			-		29,391
	Private-label mortgage-backed securities			-		2,919			-		2,919
	Total debt securities			-		153,551			-		153,551
	Equity securities in financial institutions			33		750			-		783
	Total		$	33	$	154,301		$	-	$	154,334
					31-Dec-13
			Level I		Level II			Level III		Total
	Assets measured on a recurring basis:
	U.S. government agency securities		$	-	$	25,763		$	-	$	25,763
	Obligations of states and political subdivisions			-		88,614			-		88,614
	Mortgage-backed securities in government- sponsored entities			-		38,323			-		38,323
	Private-label mortgage-backed securities			-		3,693			-		3,693
	Total debt securities			-		156,393			-		156,393
	Equity securities in financial institutions			5		745			-		750
	Total		$	5	$	157,138		$	-	$	157,143
	Financial instruments are considered Level III when their values are determined using pricing models, discounted cash flow methodologies or similar techniques and at least one significant model assumption or input is unobservable. In addition to these unobservable inputs, the valuation models for Level III financial instruments typically also rely on a number of inputs that are readily observable either directly or indirectly. Level III financial instruments also include those for which the determination of fair value requires significant management judgment or estimation.
	The following tables present the assets measured on a non-recurring basis on the Consolidated Balance Sheet at their fair value by level within the fair value hierarchy. Impaired loans that are collateral dependent are written down to fair value through the establishment of specific reserves. Techniques used to value the collateral that secure the impaired loan include quoted market prices for identical assets classified as Level I inputs and observable inputs, employed by certified appraisers, for similar assets classified as Level II inputs. In cases where valuation techniques included inputs that are unobservable and are based on estimates and assumptions developed by management based on the best information available under each circumstance, the asset valuation is classified as Level III inputs.
					31-Dec-14
	(Dollar amounts in thousands)		Level I		Level II			Level III		Total
	Assets measured on a non-recurring basis:
	Impaired loans		$	-	$	-		$	12,772	$	12,772
	Other real estate owned			-		-			2,590		2,590
					31-Dec-13
			Level I		Level II			Level III		Total
	Assets measured on a non-recurring basis:
	Impaired loans		$	-	$	-		$	17,158	$	17,158
	Other real estate owned			-		-			2,698		2,698
	The following table presents additional quantitative information about assets measured at fair value on a non-recurring basis and for which the Company uses Level III inputs to determine fair value:
			Quantitative Information about Level III Fair Value Measurements
							Valuation		Unobservable	Range
	(unaudited, in thousands)		Fair Value Estimate				Techniquest		Input	(Weighted Average)
			31-Dec-14		31-Dec-13
	Impaired loans		$	12,772	$	17,158	Appraisal of collateral (1)		Appraisal adjustments (2)
										0.00%	to	-84.6%			-25.50%
									Liquidation expenses (2)
										0.00%	to	-100.00%			-25.90%
	Other real estate owned		$	2,590	$	2,698	Appraisal of collateral (1), (3)		Appraisal adjustments (2)
										0%	to	-10.0%			-7.50%
		-1	Fair value is generally determined through independent appraisals of the underlying collateral, which generally include various level 3 inputs which are not identifiable.
		-2	Appraisals may be adjusted by management for qualitative factors such as economic conditions and estimated liquidation expenses. The range and weighted average of liquidation expenses and other appraisal adjustments are presented as a percent of the appraisal.
		-3	Includes qualitative adjustments by management and estimated liquidation expenses.
	The estimated fair value of the Company’s financial instruments is as follows:
			31-Dec-14
			Carrying										Total
			Value		Level I			Level II		Level III			Fair Value
			(in thousands)
	Financial assets:
	Cash and cash equivalents		$	25,639	$	25,639		$	-	$	-		$	25,639
	Investment securities Available for sale			154,334		-			154,334		-			154,334
	Loans held for sale			438		-			438		-			438
	Net loans			463,738		-			-		475,019			475,019
	Bank-owned life insurance			9,092		9,092			-		-			9,092
Federal Home Loan Bank stock			1,887		1,887			-		-			1,887
Accrued interest receivable			2,095		2,095			-		-			2,095
Financial liabilities:
Deposits		$	586,112	$	416,254		$	-	$	170,542		$	586,796
Short-term borrowings			14,808		14,808			-		-			14,808
Other borrowings			10,624		-					10,822			10,822
Accrued interest payable			315		315			-		-			315
		31-Dec-13
		Carrying										Total
		Value		Level I			Level II		Level III			Fair Value
		(in thousands)
Financial assets:
Cash and cash equivalents		$	26,193	$	26,193		$	-	$	-		$	26,193
Investment securities Available for sale			157,143		-			157,143		-			157,143
Net loans			428,679		-			-		430,502			430,502
Bank-owned life insurance			8,816		8,816			-		-			8,816
Federal Home Loan Bank stock			1,887		1,887			-		-			1,887
Accrued interest receivable			2,135		2,135			-		-			2,135
Financial liabilities:
Deposits		$	568,836	$	394,422		$	-	$	175,854		$	570,276
Short-term borrowings			10,809		10,809			-		-			10,809
Other borrowings			11,609		-					11,787			11,787
Accrued interest payable			364		364			-		-			364
Financial instruments are defined as cash, evidence of ownership interest in an entity, or a contract which creates an obligation or right to receive or deliver cash or another financial instrument from/to a second entity on potentially favorable or unfavorable terms.
Fair value is defined as the amount at which a financial instrument could be exchanged in a current transaction between willing parties other than in a forced liquidation sale. If a quoted market price is available for a financial instrument, the estimated fair value would be calculated based upon the market price per trading unit of the instrument.
If no readily available market exists, the fair value estimates for financial instruments should be based upon management’s judgment regarding current economic conditions, interest rate risk, expected cash flows, future estimated losses, and other factors as determined through various option pricing formulas or simulation modeling. Since many of these assumptions result from judgments made by management based upon estimates which are inherently uncertain, the resulting estimated fair values may not be indicative of the amount realizable in the sale of a particular financial instrument. In addition, changes in assumptions on which the estimated fair values are based may have a significant impact on the resulting estimated fair values.
As certain assets such as deferred tax assets and premises and equipment are not considered financial instruments, the estimated fair value of financial instruments would not represent the full value of the Company.
The Company employed simulation modeling in determining the estimated fair value of financial instruments for which quoted market prices were not available based upon the following assumptions:
Cash and Cash Equivalents, Federal Home Loan Bank Stock, Accrued Interest Receivable, Accrued Interest Payable, and Short-Term Borrowings
The fair value is equal to the current carrying value.
Bank-Owned Life Insurance
The fair value is equal to the cash surrender value of the life insurance policies.
Investment Securities Available for Sale
The fair value of investment securities is equal to the available quoted market price.  If no quoted market price is available, fair value is estimated using the quoted market price for similar securities.
Loans
The fair value is estimated by discounting future cash flows using current market inputs at which loans with similar terms and qualities would be made to borrowers of similar credit quality. Where quoted market prices were available, primarily for certain residential mortgage loans, such market rates were utilized as estimates for fair value.
Mortgage loans held for sale
Mortgage loans held for sale are carried at their fair value. Mortgage loans held for sale are estimated using security prices for similar product types and, therefore, are classified in Level II.
Deposits and Other Borrowed Funds
The fair values of certificates of deposit and other borrowed funds are based on the discounted value of contractual cash flows. The discount rates are estimated using rates currently offered for similar instruments with similar remaining maturities. Demand, savings, and money market deposits are valued at the amount payable on demand as of year-end.
Commitments to Extend Credit
These financial instruments are generally not subject to sale, and estimated fair values are not readily available. The carrying value, represented by the net deferred fee arising from the unrecognized commitment or letter of credit, and the fair value, determined by discounting the remaining contractual fee over the term of the commitment using fees currently charged to enter into similar agreements with similar credit risk, are not considered material for disclosure. The contractual amounts of unfunded commitments and letters of credit are presented in Note 14.

Note_18_Accumulated_Other_Comp

Note 18 - Accumulated Other Comprehensive Income (Loss)	12 Months Ended
	Dec. 31, 2014
Disclosure Text Block [Abstract]
Comprehensive Income (Loss) Note [Text Block]	18	ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)
	The following table presents the changes in accumulated other comprehensive income (loss) by component net of tax for years ended December 31:
			Unrealized gains on
			available-for-sale
	(Dollars in thousands)		securities (a)
	Balance as of December 31, 2013		$	(2,237	)
	Other comprehensive income before reclassification			4,949
	Amount reclassified from accumulated other comprehensive income (loss)			(164	)
	Period change			4,785
	Balance at December 31, 2014		$	2,548
			Unrealized gains on
			available for sale
	(Dollars in thousands)		securities (a)
	Balance as of December 31, 2012		$	5,391
	Other comprehensive loss before reclassification			(7,620	)
	Amount reclassified from accumulated other comprehensive income (loss)			(8	)
	Period change			(7,628	)
	Balance at December 31, 2013		$	(2,237	)
		(a)	All amounts are net of tax. Amounts in parentheses indicate debits.
	The following tables present significant amounts reclassified out of each component of accumulated other comprehensive income (loss):
	(Dollars in thousands)
	Details about other comprehensive income		Amount Reclassified from Accumulated Other Comprehensive Income (Loss) (a)			Affected Line Item in
			31-Dec-14			the Statement Where
						Net Income is Presented
	Unrealized gains (losses) on available-for-sale securities
			$	(248	)	Investment securities gains, net
				84		Income taxes
			$	(164	)	Net of tax
	(Dollars in thousands)
	Details about other comprehensive income		Amount Reclassified from Accumulated Other Comprehensive			Affected Line Item in
			Income (Loss) (a)			the Statement Where
			31-Dec-13			Net Income is Presented
	Unrealized gains (losses) on available-for-sale securities
			$	(11	)	Investment securities gains, net
				3		Income taxes
			$	(8	)	Net of tax
		(a)	Amounts in parentheses indicate debits to net income

Note_19_Parent_Company

Note 19 - Parent Company	12 Months Ended
	Dec. 31, 2014
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Condensed Financial Information of Parent Company Only Disclosure [Text Block]	19	PARENT COMPANY
	Following are condensed financial statements for the Company.
	CONDENSED BALANCE SHEET
	(Dollar amounts in thousands)		December 31,
			2014			2013
	ASSETS
	Cash and due from banks		$	466		$	797
	Investment securities available for sale			783			750
	Investment in nonbank subsidiary			2,534			2,560
	Investment in subsidiary bank			69,514			59,951
	Other assets			1,981			1,615
	TOTAL ASSETS		$	75,278		$	65,673
	LIABILITIES
	Trust preferred securities		$	8,248		$	8,248
	Short-term borrowings			3,136			3,895
	Other liabilities			27			57
	TOTAL LIABILITIES			11,411			12,200
	STOCKHOLDERS' EQUITY			63,867			53,473
	TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY		$	75,278		$	65,673
	CONDENSED STATEMENT OF INCOME AND COMPREHENSIVE INCOME
			Year Ended December 31,
	(Dollar amounts in thousands)		2014			2013			2012
	INCOME
	Dividends from subsidiary bank		$	3,142		$	2,198		$	2,327
	Other			8			5			8
	Total income			3,150			2,203			2,335
	EXPENSES
	Interest expense			304			361			417
	Other			816			475			594
	Total expenses			1,120			836			1,011
	Income before income tax benefit			2,030			1,367			1,324
	Income tax benefit			(378	)		(283	)		(342	)
	Income before equity in undistributed net income of subsidiaries			2,408			1,650			1,666
	Equity in undistributed net income of subsidiaries			4,772			5,378			4,615
	NET INCOME		$	7,180		$	7,028		$	6,281
	Comprehensive Income (Loss)		$	11,965		$	(600	)	$	7,131
	CONDENSED STATEMENT OF CASH FLOWS
			Year Ended December 31,
	(Dollar amounts in thousands)		2014			2013			2012
	OPERATING ACTIVITIES
	Net income		$	7,180		$	7,028		$	6,281
	Adjustments to reconcile net income to net cash provided by operating activities:
	Equity in undistributed net income of Middlefield Banking Company			(4,798	)		(4,884	)		(4,655	)
	Equity in undistributed net income of Emerald Bank			-			(598	)		(240	)
	Equity in undistributed net loss of EMORECO			26			104			280
	Stock-based compensation expense			10			-			32
	Other			(409	)		(253	)		(885	)
	Net cash provided by operating activities			2,009			1,397			813
	FINANCING ACTIVITIES
	Net decrease in short-term borrowings			(759	)		(976	)		(804	)
	Common stock issued			-			74			2,329
	Stock options exercised			(50	)		(77	)		-
	Proceeds from dividend reinvestment plan			590			736			694
	Cash dividends			(2,121	)		(2,097	)		(2,002	)
	Net cash (used for) provided by financing activities			(2,340	)		(2,340	)		217
	(Decrease) increase in cash			(331	)		(943	)		1,030
	CASH AT BEGINNING OF YEAR			797			1,740			710
	CASH AT END OF YEAR		$	466		$	797		$	1,740

Note_20_Selected_Quarterly_Fin

Note 20 - Selected Quarterly Financial Data (Unaudited)	12 Months Ended
	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Information [Text Block]	20	SELECTED QUARTERLY FINANCIAL DATA (Unaudited)
	(Dollar amounts in thousands)		Three Months Ended
			March 31,		June 30,		September 30,		December 31,
			2014		2014		2014		2014
	Total interest income		$	6,989	$	6,919	$	6,911	$	7,055
	Total interest expense			1,033		1,033		999		1,005
	Net interest income			5,956		5,886		5,912		6,050
	Provision for loan losses			180		120		70		-
	Net interest income after provision for loan losses			5,776		5,766		5,842		6,050
	Total noninterest income			715		857		990		1,026
	Total noninterest expense			4,229		4,598		4,385		4,638
	Income before income taxes			2,262		2,025		2,447		2,438
	Income taxes			499		414		529		550
	Net income		$	1,763	$	1,611	$	1,918	$	1,888
	Per share data:
	Net income
	Basic		$	0.87	$	0.79	$	0.94	$	0.92
	Diluted			0.86		0.79		0.93		0.92
	Average shares outstanding:
	Basic			2,033,480		2,038,026		2,044,124		2,049,536
	Diluted			2,039,515		2,044,564		2,052,012		2,059,561
	(Dollar amounts in thousands)		Three Months Ended
			March 31,		June 30,		September 30,		December 31,
			2013		2013		2013		2013
	Total interest income		$	7,014	$	6,947	$	7,174	$	7,043
	Total interest expense			1,429		1,357		1,328		1,136
	Net interest income			5,585		5,590		5,846		5,907
	Provision for loan losses			313		300		153		(570	)
	Net interest income after provision for loan losses			5,272		5,290		5,693		6,477
	Total noninterest income			868		819		808		650
	Total noninterest expense			4,001		3,948		4,115		4,806
	Income before income taxes			2,139		2,161		2,386		2,321
	Income taxes			482		476		521		500
	Net income		$	1,657	$	1,685	$	1,865	$	1,821
	Per share data:
	Net income
	Basic		$	0.84	$	0.82	$	0.92	$	0.9
	Diluted			0.83		0.82		0.92		0.9
	Average shares outstanding:
	Basic			1,999,645		2,017,264		2,022,490		2,027,680
	Diluted			2,010,292		2,023,961		2,029,420		2,032,611

Accounting_Policies_by_Policy_

Accounting Policies, by Policy (Policies)	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Basis of Accounting, Policy [Policy Text Block]	Nature of Operations and Basis of Presentation
	Middlefield Banc Corp. (the “Company”) is an Ohio corporation organized to become the holding company of The Middlefield Banking Company (“MBC”). MBC is a state-chartered bank located in Ohio. On April 19, 2007, Middlefield Banc Corp. acquired Emerald Bank (“EB”), an Ohio-chartered commercial bank headquartered in Dublin, Ohio. EB merged into MBC on January 20, 2014. On October 23, 2009, the Company established an asset resolution subsidiary named EMORECO, Inc. The Company and its subsidiaries derive substantially all of their income from banking and bank-related services, which includes interest earnings on residential real estate, commercial mortgage, commercial and consumer financings as well as interest earnings on investment securities and deposit services to its customers through ten locations. The Company is supervised by the Board of Governors of the Federal Reserve System, while MBC is subject to regulation and supervision by the Federal Deposit Insurance Corporation and the Ohio Division of Financial Institutions.
	The consolidated financial statements of the Company include its wholly-owned subsidiaries, MBC and EMORECO, Inc. Significant intercompany items have been eliminated in preparing the consolidated financial statements.
	The financial statements have been prepared in conformity with U.S. Generally Accepted Accounting Principles. In preparing the financial statements, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the balance sheet date and revenues and expenses for the period. Actual results could differ from those estimates.
Marketable Securities, Policy [Policy Text Block]	Investment Securities
	Investment securities are classified at the time of purchase, based on management’s intention and ability, as securities held to maturity or securities available for sale. Debt securities acquired with the intent and ability to hold to maturity are stated at cost adjusted for amortization of premium and accretion of discount, which are computed using a level yield method and recognized as adjustments of interest income. Certain other debt securities have been classified as available for sale to serve principally as a source of liquidity. Unrealized holding gains and losses for available-for-sale securities are reported as a separate component of stockholders’ equity, net of tax, until realized. Realized security gains and losses are computed using the specific identification method. Interest and dividends on investment securities are recognized as income when earned.
	Securities are evaluated on at least a quarterly basis and more frequently when economic or market conditions warrant such an evaluation to determine whether a decline in their value is other than temporary. For debt securities, management considers whether the present value of cash flows expected to be collected are less than the security’s amortized cost basis (the difference defined as the credit loss), the magnitude and duration of the decline, the reasons underlying the decline and the Company’s intent to sell the security or whether it is more likely than not that the Company would be required to sell the security before its anticipated recovery in market value, to determine whether the loss in value is other than temporary. Once a decline in value is determined to be other than temporary, if the Company does not intend to sell the security, and it is more likely than not that it will not be required to sell the security, before recovery of the security’s amortized cost basis, the charge to earnings is limited to the amount of credit loss. Any remaining difference between fair value and amortized cost (the difference defined as the non-credit portion) is recognized in other comprehensive income, net of applicable taxes. Otherwise, the entire difference between fair value and amortized cost is charged to earnings. For equity securities where the fair value has been significantly below cost for one year, the Company’s policy is to recognize an impairment loss unless sufficient evidence is available that the decline is not other than temporary and a recovery period can be predicted.
Cost Method Investments, Policy [Policy Text Block]	Restricted Stock
	Common stock of the Federal Home Loan Bank (“FHLB”) represents ownership in an institution that is wholly owned by other financial institutions. This equity security is accounted for at cost and classified with other assets. The FHLB of Cincinnati has reported profits for 2014 and 2013, remains in compliance with regulatory capital and liquidity requirements, and continues to pay dividends on the stock and make redemptions at the par value. With consideration given to these factors, management concluded that the stock was not impaired at December 31, 2014 or 2013.
Loans and Leases Receivable, Mortgage Banking Activities, Policy [Policy Text Block]	Mortgage Banking Activities Mortgage loans originated and intended for sale in the secondary market are carried at fair value. The Company sells the loans on a servicing retained basis. Servicing rights are initially recorded at fair value with the income statement effect recorded in gains on sales of loans. The Company measures servicing assets using the amortization method. Fair value is based on market prices for comparable mortgage servicing contracts, when available, or alternatively, is based on a valuation model that calculates the present value of estimated future net servicing income. Loan servicing rights are amortized in proportion to and over the period of estimated net future servicing revenue. The expected period of the estimated net servicing income is based in part on the expected prepayment of the underlying mortgages. The unamortized balance of mortgage servicing rights is included in accrued interest and other assets on the Consolidated Balance Sheet.
	Mortgage servicing rights are periodically evaluated for impairment. Impairment represents the excess of amortized cost over its estimated fair value. Impairment is determined by stratifying rights into tranches based on predominant risk characteristics, such as interest rate and original time to maturity. Any impairment is reported as a valuation allowance for an individual tranche. If the Company later determines that all or a portion of the impairment no longer exists for a particular grouping, a reduction of the allowance will be recorded as an increase to income.
	Servicing fee income is recorded for fees earned for servicing loans. The fees are based on a contractual percentage of outstanding principal and are recorded as income when earned. The amortization of mortgage servicing rights is netted against loan servicing fee income. Late fees and ancillary fees related to loan servicing are not material.
	The Company is exposed to interest rate risk on loans held for sale and rate-lock loan commitments (“IRLCs”). As market interest rates increase or decrease, the fair value of loans held for sale and rate-lock commitments will decrease or increase. The Company enters into derivative transactions principally to protect against the risk of adverse interest movements affecting the value of the Company’s committed loan sales pipeline. In order to mitigate the risk that a change in interest rates will result in a decrease in value of the Company’s IRLCs in the committed mortgage pipeline or its loans held for sale, the Company enters into mandatory forward loan sales contracts with secondary market participants. Mandatory forward sales contracts and committed loans intended to be held for sale are considered free-standing derivative instruments and changes in fair value are recorded in current period earnings. For committed loans, fair value is measured using current market rates for the associated mortgage loans. For mandatory forward sales contracts, fair value is measured using secondary market pricing.
Finance, Loans and Leases Receivable, Policy [Policy Text Block]	Loans
	Loans that management has the intent and ability to hold for the foreseeable future or until maturity or payoff generally are reported at their outstanding unpaid principal balances net of the allowance for loan and lease losses. Interest income is recognized as income when earned on the accrual method. The accrual of interest is discontinued on a loan when management believes, after considering economic and business conditions, the borrower’s financial condition is such that collection of interest is doubtful. Interest received on nonaccrual loans is recorded as income or applied against principal according to management’s judgment as to the collectability of such principal.
	Loan origination fees and certain direct loan origination costs are being deferred and the net amount amortized as an adjustment of the related loan’s yield. Management is amortizing these amounts over the contractual life of the related loans.
Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block]	Allowance for Loan and Lease Losses
	The allowance for loan and lease losses represents the amount which management estimates is adequate to provide for probable loan losses inherent in the loan portfolio. The allowance method is used in providing for loan losses. Accordingly, all loan losses are charged to the allowance, and all recoveries are credited to it. The allowance for loan and lease losses is established through a provision for loan losses which is charged to operations. The provision is based on management’s periodic evaluation of the adequacy of the allowance for loan and lease losses, which encompasses the overall risk characteristics of the various portfolio segments, past experience with losses, the impact of economic conditions on borrowers, and other relevant factors. The estimates used in determining the adequacy of the allowance for loan and lease losses, including the amounts and timing of future cash flows expected on impaired loans, are particularly susceptible to significant change in the near term.
	A loan is considered impaired when it is probable the borrower will not repay the loan according to the original contractual terms of the loan agreement. Management has determined that first mortgage loans on one-to-four family properties and all consumer loans represent large groups of smaller-balance homogeneous loans that are to be collectively evaluated. Loans that experience insignificant payment delays, which are defined as 90 days or less, generally are not classified as impaired. A loan is not impaired during a period of delay in payment if the Company expects to collect all amounts due, including interest accrued, at the contractual interest rate for the period of delay. All loans identified as impaired are evaluated independently by management. The Company estimates credit losses on impaired loans based on the present value of expected cash flows or the fair value of the underlying collateral if the loan repayment is expected to come from the sale or operation of such collateral. Impaired loans, or portions thereof, are charged off when it is determined a realized loss has occurred. Until such time, an allowance for loan and lease losses is maintained for estimated losses. Cash receipts on impaired loans are applied first to accrued interest receivable unless otherwise required by the loan terms, except when an impaired loan is also a nonaccrual loan, in which case the portion of the payment related to interest is recognized as income.
	Mortgage loans secured by one-to-four family properties and all consumer loans are large groups of smaller-balance homogeneous loans and are measured for impairment collectively. Management determines the significance of payment delays on a case-by-case basis, taking into consideration all circumstances concerning the loan, the creditworthiness and payment history of the borrower, the length of the payment delay, and the amount of shortfall in relation to the principal and interest owed.
Property, Plant and Equipment, Policy [Policy Text Block]	Premises and Equipment
	Land is carried at cost. Premises and equipment are stated at cost net of accumulated depreciation. Depreciation is computed on the straight-line method over the estimated useful lives of the assets, which range from 3 to 20 years for furniture, fixtures, and equipment and 3 to 40 years for buildings and leasehold improvements. Expenditures for maintenance and repairs are charged against income as incurred. Costs of major additions and improvements are capitalized.
Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]	Goodwill
	The Company accounts for goodwill using a three-step process for testing the impairment of goodwill on at least an annual basis. This approach could cause more volatility in the Company’s reported net income because impairment losses, if any, could occur irregularly and in varying amounts. No impairment of goodwill was recognized in any of the periods presented.
Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block]	Intangible Assets
	Intangible assets include core deposit intangibles, which are a measure of the value of consumer demand and savings deposits acquired in business combinations accounted for as purchases. The core deposit intangibles are being amortized to expense over a 10 year life on a straight-line basis. The recoverability of the carrying value of intangible assets is evaluated on an ongoing basis, and permanent declines in value, if any, are charged to expense.
Life Insurance, Corporate or Bank Owned [Policy Text Block]	Bank-Owned Life Insurance (“BOLI”)
	The Company owns insurance on the lives of a certain group of key employees. The policies were purchased to help offset the increase in the costs of various fringe benefit plans including healthcare. The cash surrender value of these policies is included as an asset on the Consolidated Balance Sheet and any increases in the cash surrender value are recorded as noninterest income on the Consolidated Statement of Income. In the event of the death of an insured individual under these policies, the Company would receive a death benefit, which would be recorded as noninterest income.
Real Estate, Policy [Policy Text Block]	Other Real Estate Owned
	Real estate properties acquired through foreclosure are initially recorded at fair value at the date of foreclosure, establishing a new cost basis. After foreclosure, management periodically performs valuations and the real estate is carried at the lower of cost or fair value less estimated cost to sell. Revenue and expenses from operations of the properties, gains or losses on sales and additions to the valuation allowance are included in operating results.
Income Tax, Policy [Policy Text Block]	Income Taxes
	The Company and its subsidiaries file a consolidated federal income tax return. Deferred tax assets and liabilities are reflected at currently enacted income tax rates applicable to the period in which the deferred tax assets or liabilities are expected to be realized or settled. As changes in tax laws or rates are enacted, deferred tax assets and liabilities are adjusted through the provision for income taxes.
Earnings Per Share, Policy [Policy Text Block]	Earnings Per Share
	The Company provides dual presentation of basic and diluted earnings per share. Basic earnings per share are calculated utilizing net income as reported in the numerator and average shares outstanding in the denominator. The computation of diluted earnings per share differs in that the dilutive effects of any stock options, warrants, and convertible securities are adjusted in the denominator.
Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]	Stock-Based Compensation
	The Company accounts for stock compensation based on the grant date fair value of all share-based payment awards that are expected to vest, including employee share options to be recognized as employee compensation expense over the requisite service period.
	For each of the years ended December 31, 2014, 2013, and 2012, the Company recorded no compensation cost related to vested stock options. As of December 31, 2014, there was no unrecognized compensation cost related to unvested stock options.
	The Company issued 1,722 shares of restricted stock and recorded stock–based compensation expense of $32,000 in 2012. There were no shares of restricted stock issued in 2014 or 2013.
	For the years ended December 31, 2014 and 2013, 11,223 and 21,112 options were exercised resulting in net proceeds of $50,000 and $77,000, respectively.
Cash and Cash Equivalents, Policy [Policy Text Block]	Cash Flow Information
	The Company has defined cash and cash equivalents as those amounts included in the Consolidated Balance Sheet captions as “Cash and due from banks” and “Federal funds sold” with original maturities of less than 90 days.
Advertising Costs, Policy [Policy Text Block]	Advertising Costs
	Advertising costs are expensed as incurred.
Reclassification, Policy [Policy Text Block]	Reclassification of Comparative Amounts
	Certain comparative amounts for prior years have been reclassified to conform to current-year presentations. Such reclassifications did not affect net income or retained earnings.
New Accounting Pronouncements, Policy [Policy Text Block]	Recent Accounting Pronouncements
	In January 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2014-01, Investments – Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Qualified Affordable Housing Projects. The amendments in this Update permit reporting entities to make an accounting policy election to account for their investments in qualified affordable housing projects using the proportional amortization method if certain conditions are met. Under the proportional amortization method, an entity amortizes the initial cost of the investment in proportion to the tax credits and other tax benefits received and recognizes the net investment performance in the income statement as a component of income tax expense (benefit). The amendments in this Update should be applied retrospectively to all periods presented. A reporting entity that uses the effective yield method to account for its investments in qualified affordable housing projects before the date of adoption may continue to apply the effective yield method for those preexisting investments. The amendments in this Update are effective for public business entities for annual periods and interim reporting periods within those annual periods, beginning after December 15, 2014. Early adoption is permitted. This Update is not expected to have a significant impact on the Company’s financial statements.
	In January 2014, the FASB issued ASU 2014-04, Receivables – Troubled Debt Restructurings by Creditors (Subtopic 310-40): Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure. The amendments in this Update clarify that an in-substance repossession or foreclosure occurs, and a creditor is considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan, upon either (1) the creditor obtaining legal title to the residential real estate property upon completion of a foreclosure or (2) the borrower conveying all interest in the residential real estate property to the creditor to satisfy that loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. Additionally, the amendments require interim and annual disclosure of both (1) the amount of foreclosed residential real estate property held by the creditor and (2) the recorded investment in consumer mortgage loans collateralized by residential real estate property that are in the process of foreclosure according to local requirements of the applicable jurisdiction. The amendments in this Update are effective for public business entities for annual periods, and interim periods within those annual periods, beginning after December 15, 2014. An entity can elect to adopt the amendments in this Update using either a modified retrospective transition method or a prospective transition method. This Update is not expected to have a significant impact on the Company’s financial statements.
	In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (a new revenue recognition standard). The Update’s core principle is that a company will recognize revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. In addition, this update specifies the accounting for certain costs to obtain or fulfill a contract with a customer and expands disclosure requirements for revenue recognition. This Update is effective for annual reporting periods beginning after December 15, 2016, including interim periods within that reporting period. The Company is evaluating the effect of adopting this new accounting Update.
	In June 2014, the FASB issued ASU 2014-11, Transfers and Servicing (Topic 860): Repurchase-to-Maturity Transactions, Repurchase Financings, and Disclosures. The amendments in this Update change the accounting for repurchase-to-maturity transactions to secured borrowing accounting. For repurchase financing arrangements, the amendments require separate accounting for a transfer of a financial asset executed contemporaneously with a repurchase agreement with the same counterparty, which will result in secured borrowing accounting for the repurchase agreement. The amendments also require enhanced disclosures. The accounting changes in this Update are effective for the first interim or annual period beginning after December 15, 2014. An entity is required to present changes in accounting for transactions outstanding on the effective date as a cumulative-effect adjustment to retained earnings as of the beginning of the period of adoption. Earlier application is prohibited. The disclosure for certain transactions accounted for as a sale is required to be presented for interim and annual periods beginning after December 15, 2014, and the disclosure for repurchase agreements, securities lending transactions, and repurchase-to-maturity transactions accounted for as secured borrowings are required to be presented for annual periods beginning after December 15, 2014, and for interim periods beginning after March 15, 2015. The disclosures are not required to be presented for comparative periods before the effective date. This Update is not expected to have a significant impact on the Company’s financial statements.
	In June 2014, the FASB issued ASU 2014-12, Compensation-Stock Compensation (Topic 718): Accounting for Share-Based Payments when the Terms of an Award Provide that a Performance Target Could Be Achieved After the Requisite Service Period. The amendments require that a performance target that affects vesting and that could be achieved after the requisite service period be treated as a performance condition. The amendments in this Update are effective for annual periods and interim periods within those annual periods beginning after December 15, 2015. Earlier adoption is permitted. Entities may apply the amendments in this Update either (a) prospectively to all awards granted or modified after the effective date or (b) retrospectively to all awards with performance targets that are outstanding as of the beginning of the earliest annual period presented in the financial statements and to all new or modified awards thereafter. If retrospective transition is adopted, the cumulative effect of applying this Update as of the beginning of the earliest annual period presented in the financial statements should be recognized as an adjustment to the opening retained earnings balance at that date. Additionally, if retrospective transition is adopted, an entity may use hindsight in measuring and recognizing the compensation cost. This Update is not expected to have a significant impact on the Company’s financial statements.
	In August 2014, the FASB issued ASU 2014-14, Receivables – Troubled Debt Restructurings by Creditors (Subtopic 310-40). The amendments in this Update require that a mortgage loan be derecognized and that a separate other receivable be recognized upon foreclosure if the following conditions are met: (1) the loan has a government guarantee that is not separable from the loan before foreclosure, (2) at the time of foreclosure, the creditor has the intent to convey the real estate property to the guarantor and make a claim on the guarantee, and the creditor has the ability to recover under that claim, and (3) at the time of foreclosure, any amount of the claim that is determined on the basis of the fair value of the real estate is fixed. Upon foreclosure, the separate other receivable should be measured based on the amount of the loan balance (principal and interest) expected to be recovered from the guarantor. The amendments in this Update are effective for public business entities for annual periods, and interim periods within those annual periods, beginning after December 15, 2014. This Update is not expected to have a significant impact on the Company’s financial statements.
	In August 2014, the FASB issued ASU 2014-15, Presentation of Financial Statements-Going Concern (Subtopic 205-40). The amendments in this Update provide guidance in accounting principles generally accepted in the United States of America about management's responsibility to evaluate whether there is substantial doubt about an entity's ability to continue as a going concern and to provide related footnote disclosures. The amendments in this Update are effective for the annual period ending after December 15, 2016, and for annual periods and interim periods thereafter. Early application is permitted. This Update is not expected to have a significant impact on the Company’s financial statements.
	In November 2014, the FASB issued ASU 2014-16, Derivatives and Hedging (Topic 815): Determining Whether the Host Contract in a Hybrid Financial Instrument Issued in the Form of a Share Is More Akin to Debt or to Equity (a consensus of the FASB Emerging Issues Task Force). This ASU clarifies how current U.S. GAAP should be interpreted in subjectively evaluating the economic characteristics and risks of a host contract in a hybrid financial instrument that is issued in the form of a share. Public business entities are required to implement the new requirements in fiscal years and interim periods within those fiscal years beginning after December 15, 2015. This Update is not expected to have a significant impact on the Company’s financial statements.
	In November 2014, the FASB issued ASU 2014-17, Business Combinations (Topic 805): Pushdown Accounting. The amendments in this Update apply to the separate financial statements of an acquired entity and its subsidiaries that are a business or nonprofit activity (either public or nonpublic) upon the occurrence of an event in which an acquirer (an individual or an entity) obtains control of the acquired entity. An acquired entity may elect the option to apply pushdown accounting in the reporting period in which the change-in-control event occurs. If pushdown accounting is not applied in the reporting period in which the change-in-control event occurs, an acquired entity will have the option to elect to apply pushdown accounting in a subsequent reporting period to the acquired entity's most recent change-in-control event. The amendments in this Update are effective on November 18, 2014. After the effective date, an acquired entity can make an election to apply the guidance to future change-in-control events or to its most recent change-in-control event. This Update is not expected to have a significant impact on the Company’s financial statements.
	In January 2015, the FASB issued ASU 2015-01, Income Statement –Extraordinary and Unusual Items, as part of its initiative to reduce complexity in accounting standards. This Update eliminates from GAAP the concept of extraordinary items. The amendments in this Update are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015. A reporting entity may apply the amendments prospectively. A reporting entity also may apply the amendments retrospectively to all prior periods presented in the financial statements. Early adoption is permitted provided that the guidance is applied from the beginning of the fiscal year of adoption. This Update is not expected to have a significant impact on the Company’s financial statements.

Note_2_Earnings_Per_Share_Tabl

Note 2 - Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2014
Earnings Per Share [Abstract]
Schedule of Weighted Average Number of Shares [Table Text Block]		2014			2013			2012
	Weighted-average common shares outstanding		2,231,165			2,206,392			2,101,490
	Average treasury stock shares		(189,530	)		(189,530	)		(189,530	)
	Weighted-average common shares and common stock equivalents used to calculate basic earnings per share		2,041,635			2,016,862			1,911,960
	Additional common stock equivalents used to calculate diluted earnings per share		7,871			7,178			4,972
	Weighted-average common shares and common stock equivalents used to calculate diluted earnings per share		2,049,506			2,024,040			1,916,932

Note_3_Investment_Securities_A1

Note 3 - Investment Securities Available For Sale (Tables)	12 Months Ended
	Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract]
Schedule of Available-for-sale Securities Reconciliation [Table Text Block]		31-Dec-14
					Gross			Gross
		Amortized			Unrealized			Unrealized			Fair
	(Dollar amounts in thousands)	Cost			Gains			Losses			Value
	U.S. government agency securities	$	23,035		$	311		$	(450	)	$	22,896
	Obligations of states and political subdivisions:
	Taxable		2,953			226			-			3,179
	Tax-exempt		91,916			3,803			(553	)		95,166
	Mortgage-backed securities in government-sponsored entities		29,150			475			(234	)		29,391
	Private-label mortgage-backed securities		2,672			247			-			2,919
	Total debt securities		149,726			5,062			(1,237	)		153,551
	Equity securities in financial institutions		750			33			-			783
	Total	$	150,476		$	5,095		$	(1,237	)	$	154,334
		31-Dec-13
					Gross			Gross
		Amortized			Unrealized			Unrealized			Fair
	(Dollar amounts in thousands)	Cost			Gains			Losses			Value
	U.S. government agency securities	$	27,289		$	135		$	(1,661	)	$	25,763
	Obligations of states and political subdivisions:
	Taxable		3,787			46			(38	)		3,795
	Tax-exempt		86,524			1,562			(3,267	)		84,819
	Mortgage-backed securities in government-sponsored entities		38,816			535			(1,028	)		38,323
	Private-label mortgage-backed securities		3,366			327			-			3,693
	Total debt securities		159,782			2,605			(5,994	)		156,393
	Equity securities in financial institutions		750			-			-			750
	Total	$	160,532		$	2,605		$	(5,994	)	$	157,143
Investments Classified by Contractual Maturity Date [Table Text Block]		Amortized			Fair
	(Dollar amounts in thousands)	Cost			Value
	Due in one year or less	$	571		$	585
	Due after one year through five years		10,029			10,200
	Due after five years through ten years		20,960			21,602
	Due after ten years		118,166			121,164
	Total	$	149,726		$	153,551
Realized Gain (Loss) on Investments [Table Text Block]		2014			2013			2012
	Proceeds from sales	$	8,383		$	25,088		$	32,985
	Gross realized gains		306			186			704
	Gross realized losses		(58	)		(175	)		(94	)
Schedule of Unrealized Loss on Investments [Table Text Block]		31-Dec-14
		Less than Twelve Months						Twelve Months or Greater						Total
					Gross						Gross					Gross
		Fair			Unrealized			Fair			Unrealized			Fair		Unrealized
	(Dollar amounts in thousands)	Value			Losses			Value			Losses			Value		Losses
	U.S. government agency securities	$	-		$	-		$	15,734		$	(450	)	$	15,734	$	(450	)
	Obligations of states and political subdivisions
	Tax-exempt		2,406			(10	)		18,232			(543	)		20,638		(553	)
	Mortgage-backed securities in government-sponsored entities		-			-			16,774			(234	)		16,774		(234	)
	Total	$	2,406		$	(10	)	$	50,740		$	(1,227	)	$	53,146	$	(1,237	)
		31-Dec-13
		Less than Twelve Months						Twelve Months or Greater						Total
					Gross						Gross					Gross
		Fair			Unrealized			Fair			Unrealized			Fair		Unrealized
	(Dollar amounts in thousands)	Value			Losses			Value			Losses			Value		Losses
	U.S. government agency securities	$	13,130		$	(929	)	$	7,166		$	(732	)	$	20,295	$	(1,661	)
	Obligations of states and political subdivisions
	Taxable		1,301			(38	)		-			-			1,301		(38	)
	Tax-exempt		26,743			(2,883	)		2,678			(383	)		29,421		(3,267	)
	Mortgage-backed securities in government-sponsored entities		18,082			(757	)		5,248			(271	)		23,330		(1,028	)
	Total	$	59,255		$	(4,608	)	$	15,092		$	(1,386	)	$	74,347	$	(5,994	)

Note_4_Loans_and_Related_Allow1

Note 4 - Loans and Related Allowance for Loan Losses (Tables)	12 Months Ended
	Dec. 31, 2014
Note 4 - Loans and Related Allowance for Loan Losses (Tables) [Line Items]
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]		2014			2013
	Commercial and industrial	$	60,744		$	54,498
	Real estate - construction		30,296			25,601
	Real estate - mortgage:
	Residential		227,552			210,310
	Commercial		147,413			141,171
	Consumer installment		4,579			4,145
			470,584			435,725
	Less allowance for loan and lease losses		(6,846	)		(7,046	)
	Net loans	$	463,738		$	428,679
Schedule of Financing Receivable by Segment [Table Text Block]								Real Estate- Mortgage
	31-Dec-14	Commercial and industrial			Real estate- construction			Residential			Commercial			Consumer installment			Total
	Loans:
	Individually evaluated for impairment	$	1,393		$	3,296		$	5,183		$	4,490		$	6		$	14,368
	Collectively evaluated for impairment		59,351			27,000			222,369			142,923			4,573			456,216
	Total loans	$	60,744		$	30,296		$	227,552		$	147,413		$	4,579		$	470,584
								Real estate- Mortgage
	31-Dec-13	Commercial and industrial			Real estate- construction			Residential			Commercial			Consumer installment			Total
	Loans:
	Individually evaluated for impairment	$	1,891		$	4,011		$	5,882		$	7,175		$	6		$	18,965
	Collectively evaluated for impairment		52,607			21,590			204,428			133,996			4,139			416,760
	Total loans	$	54,498		$	25,601		$	210,310		$	141,171		$	4,145		$	435,725
Schedule of Credit Losses for Financing Receivables, Current [Table Text Block]								Real Estate- Mortgage
	31-Dec-14	Commercial and industrial			Real estate- construction			Residential			Commercial			Consumer installment			Total
	Allowance for loan and lease losses:
	Ending allowance balance attributable to loans:
	Individually evaluated for impairment	$	83		$	589		$	892		$	30		$	2		$	1,596
	Collectively evaluated for impairment		559			279			2,811			1,546			55			5,250
	Total ending allowance balance	$	642		$	868		$	3,703		$	1,576		$	57		$	6,846
								Real Estate- Mortgage
	31-Dec-13	Commercial and industrial			Real estate- construction			Residential			Commercial			Consumer installment			Total
	Allowance for loan and lease losses:
	Ending allowance balance attributable to loans:
	Individually evaluated for impairment	$	179		$	210		$	855		$	563		$	-		$	1,807
	Collectively evaluated for impairment		435			366			2,809			1,607			22			5,239
	Total ending allowance balance	$	614		$	576		$	3,664		$	2,170		$	22		$	7,046
		Commercial and industrial			Real estate- construction			Real estate- residential mortgage			Real estate- commercial mortgage			Consumer installment			Total
	ALLL balance at December 31, 2013	$	614		$	576		$	3,664		$	2,170		$	22		$	7,046
	Charge-offs		(237	)		-			(671	)		(260	)		(44	)		(1,212	)
	Recoveries		121			60			267			40			154			642
	Provision		144			232			443			(374	)		(75	)		370
	ALLL balance at December 31, 2014	$	642		$	868		$	3,703		$	1,576		$	57		$	6,846
		Commercial and industrial			Real estate- construction			Real estate- residential mortgage			Real estate- commercial mortgage			Consumer installment			Total
	ALLL balance at December 31, 2012	$	1,732		$	1,123		$	2,872		$	1,991		$	61		$	7,779
	Charge-offs		(419	)		(191	)		(675	)		-			(45	)		(1,330	)
	Recoveries		191			33			107			46			24			401
	Provision		(890	)		(389	)		1,360			133			(18	)		196
	ALLL balance at December 31, 2013	$	614		$	576		$	3,664		$	2,170		$	22		$	7,046
		Commercial and industrial			Real estate- construction			Real estate- residential mortgage			Real estate- commercial mortgage			Consumer installment			Total
	ALLL balance at December 31, 2011	$	1,296		$	438		$	3,731		$	1,306		$	48		$	6,819
	Charge-offs		(230	)		(135	)		(785	)		(123	)		(64	)		(1,337	)
	Recoveries		71			-			31			-			27			129
	Provision		595			820			(105	)		808			50			2,168
	ALLL balance at December 31, 2012	$	1,732		$	1,123		$	2,872		$	1,991		$	61		$	7,779
Impaired Financing Receivables [Table Text Block]	31-Dec-14
	Impaired Loans
		Recorded			Unpaid Principal			Related
		Investment			Balance			Allowance
	With no related allowance recorded:
	Commercial and industrial	$	1,146		$	1,145		$	-
	Real estate - construction		2,707			2,705			-
	Real estate - mortgage:
	Residential		2,202			2,197			-
	Commercial		4,064			4,060			-
	Total	$	10,119		$	10,107		$	-
	With an allowance recorded:
	Commercial and industrial	$	247		$	247		$	83
	Real estate - construction		589			589			589
	Real estate - mortgage:
	Residential		2,981			2,978			892
	Commercial		426			426			30
	Consumer installment		6			6			2
	Total	$	4,249		$	4,246		$	1,596
	Total:
	Commercial and industrial	$	1,393		$	1,392		$	83
	Real estate - construction		3,296			3,294			589
	Real estate - mortgage:
	Residential		5,183			5,175			892
	Commercial		4,490			4,486			30
	Consumer installment		6			6			2
	Total	$	14,368		$	14,353		$	1,596
	31-Dec-13
	Impaired Loans
		Recorded			Unpaid Principal			Related
		Investment			Balance			Allowance
	With no related allowance recorded:
	Commercial and industrial	$	1,357		$	1,357		$	-
	Real estate - construction		124			124			-
	Real estate - mortgage:
	Residential		2,704			2,892			-
	Commercial		5,093			5,093			-
	Consumer installment		6			6			-
	Total	$	9,284		$	9,472		$	-
	With an allowance recorded:
	Commercial and industrial	$	534		$	534		$	179
	Real estate - construction		3,887			3,887			210
	Real estate - mortgage:
	Residential		3,178			3,217			855
	Commercial		2,082			2,082			563
	Consumer installment		-			-			-
	Total	$	9,681		$	9,720		$	1,807
	Total:
	Commercial and industrial	$	1,891		$	1,891		$	179
	Real estate - construction		4,011			4,011			210
	Real estate - mortgage:
	Residential		5,882			6,109			855
	Commercial		7,175			7,175			563
	Consumer installment		6			6			-
	Total	$	18,965		$	19,192		$	1,807
Schedule of Additional Information Related to Impaired Loans [Table Text Block]		As of December 31, 2014						As of December 31, 2013						As of December 31, 2012
		Average Recorded Investment			Interest Income Recognized			Average Recorded Investment			Interest Income Recognized			Average Recorded Investment			Interest Income Recognized
	Commercial and industrial	$	1,989		$	85		$	2,187		$	119		$	2,776		$	348
	Real estate - construction		3,631			154			3,743			183			2,798			156
	Real estate - mortgage:
	Residential		5,331			171			5,380			293			4,263			338
	Commercial		5,998			229			6,500			493			4,717			543
	Consumer installment		11			1			13			1			27			3
	Total	$	16,960		$	640		$	17,824		$	1,090		$	14,582		$	1,388
Troubled Debt Restructurings on Financing Receivables [Table Text Block]		Number of Contracts
	Troubled Debt Restructurings	Rate			Other			Total			Pre-Modification Outstanding Recorded Investment
		Forgiveness
	Real estate- mortgage:
	Residential		-			3			3		$	140
	Commercial		-			1			1			48
	Consumer Installment		1			-			1			6
		Number of Contracts
	Troubled Debt Restructurings	Rate Forgiveness			Other			Total			Pre-Modification Outstanding Recorded Investment
	Commercial and industrial		6			1			7		$	1,264
	Real estate- mortgage:
	Residential		7			-			7			784
	Commercial		2			-			2			834
		Number of Contracts
	Troubled Debt Restructurings	Rate			Other			Total			Pre-Modification Outstanding Recorded Investment
		Forgiveness
	Commercial and industrial		1			12			13		$	489
	Real estate- mortgage:
	Residential		2			7			9			921
	Commercial		-			1			1			156
	Consumer Installment		-			2			2			11
Financing Receivable Credit Quality Indicators [Table Text Block]					Special									Total
		Pass			Mention			Substandard			Doubtful			Loans
	31-Dec-14
	Commercial and industrial	$	58,976		$	-		$	1,730		$	38		$	60,744
	Real estate - construction		29,212			495			-			589			30,296
	Real estate - mortgage:
	Residential		218,244			584			8,724			-			227,552
	Commercial		137,755			3,908			5,750			-			147,413
	Consumer installment		4,572			-			7			-			4,579
	Total	$	448,759		$	4,987		$	16,211		$	627		$	470,584
					Special									Total
		Pass			Mention			Substandard			Doubtful			Loans
	31-Dec-13
	Commercial and industrial	$	52,078		$	772		$	1,605		$	43		$	54,498
	Real estate - construction		24,052			907			642			-			25,601
	Real estate - mortgage:
	Residential		198,479			774			11,057			-			210,310
	Commercial		132,931			2,232			6,008			-			141,171
	Consumer installment		4,129			-			16			-			4,145
	Total	$	411,669		$	4,685		$	19,328		$	43		$	435,725
Past Due Financing Receivables [Table Text Block]					30-59 Days			60-89 Days			90 Days+			Total			Total
		Current			Past Due			Past Due			Past Due			Past Due			Loans
	31-Dec-14
	Commercial and industrial	$	60,296		$	349		$	68		$	31		$	448		$	60,744
	Real estate - construction		30,296			-			-			-			-			30,296
	Real estate - mortgage:
	Residential		223,209			2,065			363			1,915			4,343			227,552
	Commercial		146,816			30			-			567			597			147,413
	Consumer installment		4,547			27			3			2			32			4,579
	Total	$	465,164		$	2,471		$	434		$	2,515		$	5,420		$	470,584
					30-59 Days			60-89 Days			90 Days+			Total			Total
		Current			Past Due			Past Due			Past Due			Past Due			Loans
	31-Dec-13
	Commercial and industrial	$	53,440		$	529		$	359		$	170		$	1,058		$	54,498
	Real estate - construction		24,945			17			639			-			656			25,601
	Real estate - mortgage:
	Residential		203,747			3,082			481			3,000			6,563			210,310
	Commercial		140,251			645			100			175			920			141,171
	Consumer installment		4,083			43			19			-			62			4,145
	Total	$	426,466		$	4,316		$	1,598		$	3,345		$	9,259		$	435,725
Schedule of Financing Receivables, Non Accrual Status [Table Text Block]					90+ Days Past
		Nonaccrual			Due and Accruing
	31-Dec-14
	Commercial and industrial	$	365		$	-
	Real estate - construction		587			-
	Real estate - mortgage:
	Residential		5,438			165
	Commercial		955			-
	Consumer installment		2			-
	Total	$	7,347		$	165
					90+ Days Past
		Nonaccrual			Due and Accruing
	31-Dec-13
	Commercial and industrial	$	176		$	38
	Real estate - construction		-			-
	Real estate - mortgage:
	Residential		7,411			143
	Commercial		743			-
	Consumer installment		8			-
	Total	$	8,338		$	181
Subsequently Defaulted [Member]
Note 4 - Loans and Related Allowance for Loan Losses (Tables) [Line Items]
Troubled Debt Restructurings on Financing Receivables [Table Text Block]	Troubled Debt Restructurings subsequently defaulted	Number of Contracts			Recorded Investment
	Real estate- mortgage:
	Residential		1		$	15
	Troubled Debt Restructurings subsequently defaulted	Number of  Contracts			Recorded Investment
	Commercial and industrial		5		$	574
	Real estate- mortgage:
	Commercial		1			190
	Troubled Debt Restructurings subsequently defaulted	Number of Contracts			Recorded Investment
	Commercial and industrial		6		$	256
	Real estate- construction		1			3,622
	Real estate- mortgage:
	Residential		2			89
	Consumer Installment		1			5

Note_5_Premises_and_Equipment_

Note 5 - Premises and Equipment (Tables)	12 Months Ended
	Dec. 31, 2014
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment [Table Text Block]	(Dollar amounts in thousands)	2014		2013
	Land and land improvements	$	1,943	$	1,943
	Building and leasehold improvements		11,133		10,832
	Furniture, fixtures, and equipment		4,637		4,036
			17,713		16,811
	Less accumulated depreciation and amortization		7,733		6,983
	Total	$	9,980	$	9,828

Note_6_Goodwill_and_Intangible1

Note 6 - Goodwill and Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	2015	$	40,000
	2016		40,000
	2017		36,000
	Total	$	116,000

Note_7_Other_Assets_Tables

Note 7 - Other Assets (Tables)	12 Months Ended
	Dec. 31, 2014
Disclosure Text Block Supplement [Abstract]
Schedule of Other Assets [Table Text Block]	(Dollar amounts in thousands)	2014		2013
	FHLB stock	$	1,887	$	1,887
	Accrued interest on investment securities		1,005		1,029
	Accrued interest on loans		1,090		1,106
	Deferred tax asset, net		1,484		3,688
	Other real estate owned		2,590		2,698
	Other		1,579		1,308
	Total	$	9,635	$	11,716

Note_9_Shortterm_Borrowings_Ta

Note 9 - Short-term Borrowings (Tables)	12 Months Ended
	Dec. 31, 2014
Disclosure Text Block [Abstract]
Schedule of Short-term Debt [Table Text Block]	(Dollar amounts in thousands)	2014			2013
	Balance at year-end	$	14,808		$	10,809
	Average balance outstanding		8,379			8,806
	Maximum month-end balance		19,970			17,351
	Weighted-average rate at year-end		0.98	%		1.44	%
	Weighted-average rate during the year		1.77	%		3.15	%

Note_10_Other_Borrowings_Table

Note 10 - Other Borrowings (Tables)	12 Months Ended
	Dec. 31, 2014
Other Borrowings [Abstract]
Schedule of Debt [Table Text Block]							Weighted-			Stated interest
	(Dollar amounts in thousands)	Maturity range					average			rate range
	Description	from			to		interest rate			from			to			2014		2013
	Fixed-rate amortizing		6/1/15		10/1/28			4	%		2.99	%	4.48	%	$	2,376	$	3,361
	Junior subordinated debt		12/21/37		12/21/37			1.9	%		1.89		1.91			8,248		8,248
	Total														$	10,624	$	11,609
Schedule of Maturities of Long-term Debt [Table Text Block]	(Dollar amounts in thousands)
				Weighted-
	Year Ending December 31,	Amount		Average Rate
	2015	$	685		4.01	%
	2016		502		4	%
	2017		373		4	%
	2018		252		4.02	%
	2019		155		4.04	%
	Beyond 2019		8,657		2	%
	Total	$	10,624		2.37	%

Note_11_Other_Liabilities_Tabl

Note 11 - Other Liabilities (Tables)	12 Months Ended
	Dec. 31, 2014
Other Liabilities and Financial Instruments Subject to Mandatory Redemption [Abstract]
Other Liabilities [Table Text Block]		2014		2013
	(Dollar amounts in thousands)
	Accrued interest payable	$	315	$	364
	Supplemental Executive Retirement Plan		828		727
	Accrued salary expense		609		580
	Other		368		692
	Total	$	2,120	$	2,363

Note_12_Income_Taxes_Tables

Note 12 - Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	(Dollar amounts in thousands)	2014			2013			2012
	Current payable	$	2,146		$	1,556		$	1,660
	Deferred		(154	)		423			2
	Total provision	$	1,992		$	1,979		$	1,662
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	(Dollar amounts in thousands)	2014			2013
	Deferred tax assets:
	Allowance for loan and lease losses	$	2,328		$	2,396
	Net unrealized loss on securities		-			1,152
	Supplemental retirement plan		282			247
	Investment security basis adjustment		66			66
	Nonaccrual interest income		444			472
	Deferred origination fees, net		295			171
	OREO adjustments		94			107
	Accrued compensation		207			197
	Other		14			19
	Gross deferred tax assets		3,730			4,827
	Deferred tax liabilities:
	Premises and equipment		385			503
	Net unrealized gain on securities		1,311			-
	FHLB stock dividends		225			225
	Intangibles		353			304
	Other		77			107
	Gross deferred tax liabilities		2,351			1,139
	Net deferred tax assets	$	1,379		$	3,688
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	(Dollar amounts in thousands)	2014						2013						2012
					% of						% of						% of
					Pretax						Pretax						Pretax
		Amount			Income			Amount			Income			Amount			Income
	Provision at statutory rate	$	3,119			34	% $		3,062			34	% $		2,700			34	%
	Tax-free income		(1,187	)		(12.9	)		(1,138	)		(12.6	)		(1,095	)		(13.8	)
	Nondeductible interest expense		37			0.4			45			0.5			48			0.6
	Other		23			0.2			10			0.1			9			0.1
	Actual tax expense and effective rate	$	1,992			21.7	% $		1,979			22	% $		1,662			20.9	%

Note_13_Employee_Benefits_Tabl

Note 13 - Employee Benefits (Tables)	12 Months Ended
	Dec. 31, 2014
Disclosure Text Block Supplement [Abstract]
Schedule of Net Periodic Benefit Cost Not yet Recognized [Table Text Block]		Projected Payments
	2015	$	34,000
	2016		29,000
	2017		23,000
	2018		18,000
	2019		12,000
	Thereafter		12,000
	Total	$	128,000
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]					Weighted-					Weighted-
					average					average
					Exercise					Exercise
		2014			Price		2013			Price
	Outstanding, January 1	$	58,581		$	28.38	$	79,693		$	27.25
	Exercised		(11,223	)		30.45		(21,112	)		24.11
	Forfeited		(907	)		27.35		-			-
	Outstanding, December 31	$	46,451		$	27.9	$	58,581		$	28.38
	Exercisable, December 31	$	46,451		$	27.9	$	58,581		$	28.38
Schedule of Other Share-based Compensation, Activity [Table Text Block]					Outstanding							Exercisable
							Contractual			Average				Average
		Exercise					Average			Exercise				Exercise
	Grant Date	Price			Shares		Life			Price		Shares		Price
	14-Dec-05		36.73			7,163		0.95			36.73		7,163		36.73
	10-Dec-06		40.24			3,150		1.94			40.24		3,150		40.24
	19-Apr-07		37.33			3,639		2.29			37.33		3,639		37.33
	16-May-07		37.48			1,337		2.37			37.48		1,337		37.48
	10-Dec-07		37			2,450		2.94			37		2,450		37
	2-Jan-08		36.25			1,337		3			36.25		1,337		36.25
	10-Nov-08		23			18,500		3.86			23		18,500		23
	9-May-11		17.55			8,875		6.35			17.55		8,875		17.55
						46,451							46,451

Note_14_Commitments_Tables

Note 14 - Commitments (Tables)	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Schedule of Commitments [Table Text Block]	(Dollar amounts in thousands)	2014		2013
	Commitments to extend credit	$	97,947	$	120,861
	Standby letters of credit		4,514		4,809
	Total	$	102,461	$	125,670
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]	2015	$	221
	2016		226
	2017		230
	2018		238
	2019		240
	Thereafter		203
		$	1,358

Note_16_Regulatory_Capital_Tab

Note 16 - Regulatory Capital (Tables)	12 Months Ended
	Dec. 31, 2014
Disclosure Text Block [Abstract]
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block]		Middlefield Banc Corp.					The Middlefield Banking Co.
	(Dollar amounts in thousands)	31-Dec-14					31-Dec-14
		Amount		Ratio			Amount		Ratio
	Total Capital (to Risk-weighted Assets)
	Actual	$	70,693		14.64	%	$	68,325		14.19	%
	For Capital Adequacy Purposes		38,642		8	%		38,507		8	%
	To Be Well Capitalized		48,302		10	%		48,134		10	%
	Tier I Capital (to Risk-weighted Assets)
	Actual	$	64,645		13.38	%	$	62,315		12.95	%
	For Capital Adequacy Purposes		19,321		4	%		19,253		4	%
	To Be Well Capitalized		28,981		6	%		28,880		6	%
	Tier I Capital (to Average Assets)
	Actual	$	64,645		9.6	%	$	62,315		9.25	%
	For Capital Adequacy Purposes		26,945		4	%		26,945		4	%
	To Be Well Capitalized		33,682		5	%		33,682		5	%
		Middlefield Banc Corp.					The Middlefield Banking Co.					Emerald Bank
		31-Dec-13					31-Dec-13					31-Dec-13
		Amount		Ratio			Amount		Ratio			Amount		Ratio
	Total Capital (to Risk-weighted Assets)
	Actual	$	64,220		14.06	%	$	53,194		13.77	%	$	9,482		13.76	%
	For Capital Adequacy Purposes		36,541		8	%		30,906		8	%		5,514		8	%
	To Be Well Capitalized		45,676		10	%		38,632		10	%		6,893		10	%
	Tier I Capital (to Risk-weighted Assets)
	Actual	$	58,494		12.81	%	$	48,364		12.52	%	$	8,605		12.48	%
	For Capital Adequacy Purposes		18,270		4	%		15,453		4	%		2,757		4	%
	To Be Well Capitalized		27,406		6	%		23,179		6	%		4,136		6	%
	Tier I Capital (to Average Assets)
	Actual	$	58,494		8.97	%	$	48,364		8.51	%	$	8,605		10.92	%
	For Capital Adequacy Purposes		26,093		4	%		22,735		4	%		3,152		4	%
	To Be Well Capitalized		32,617		5	%		28,419		5	%		3,940		5	%

Note_17_Fair_Value_Disclosure_1

Note 17 - Fair Value Disclosure Measurements (Tables)	12 Months Ended
	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Fair Value, Assets Measured on Recurring Basis [Table Text Block]				31-Dec-14
	(Dollar amounts in thousands)	Level I		Level II			Level III		Total
	Assets measured on a recurring basis:
	U.S. government agency securities	$	-	$	22,896		$	-	$	22,896
	Obligations of states and political subdivisions		-		98,345			-		98,345
	Mortgage-backed securities in government- sponsored entities		-		29,391			-		29,391
	Private-label mortgage-backed securities		-		2,919			-		2,919
	Total debt securities		-		153,551			-		153,551
	Equity securities in financial institutions		33		750			-		783
	Total	$	33	$	154,301		$	-	$	154,334
				31-Dec-13
		Level I		Level II			Level III		Total
	Assets measured on a recurring basis:
	U.S. government agency securities	$	-	$	25,763		$	-	$	25,763
	Obligations of states and political subdivisions		-		88,614			-		88,614
	Mortgage-backed securities in government- sponsored entities		-		38,323			-		38,323
	Private-label mortgage-backed securities		-		3,693			-		3,693
	Total debt securities		-		156,393			-		156,393
	Equity securities in financial institutions		5		745			-		750
	Total	$	5	$	157,138		$	-	$	157,143
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Valuation Techniques [Table Text Block]				31-Dec-14
	(Dollar amounts in thousands)	Level I		Level II			Level III		Total
	Assets measured on a non-recurring basis:
	Impaired loans	$	-	$	-		$	12,772	$	12,772
	Other real estate owned		-		-			2,590		2,590
				31-Dec-13
		Level I		Level II			Level III		Total
	Assets measured on a non-recurring basis:
	Impaired loans	$	-	$	-		$	17,158	$	17,158
	Other real estate owned		-		-			2,698		2,698
Fair Value Inputs, Assets, Quantitative Information [Table Text Block]		Quantitative Information about Level III Fair Value Measurements
						Valuation		Unobservable	Range
	(unaudited, in thousands)	Fair Value Estimate				Techniquest		Input	(Weighted Average)
		31-Dec-14		31-Dec-13
	Impaired loans	$	12,772	$	17,158	Appraisal of collateral (1)		Appraisal adjustments (2)
									0.00%	to	-84.6%			-25.50%
								Liquidation expenses (2)
									0.00%	to	-100.00%			-25.90%
	Other real estate owned	$	2,590	$	2,698	Appraisal of collateral (1), (3)		Appraisal adjustments (2)
									0%	to	-10.0%			-7.50%
Fair Value, by Balance Sheet Grouping [Table Text Block]		31-Dec-14
		Carrying										Total
		Value		Level I			Level II		Level III			Fair Value
		(in thousands)
	Financial assets:
	Cash and cash equivalents	$	25,639	$	25,639		$	-	$	-		$	25,639
	Investment securities Available for sale		154,334		-			154,334		-			154,334
	Loans held for sale		438		-			438		-			438
	Net loans		463,738		-			-		475,019			475,019
	Bank-owned life insurance		9,092		9,092			-		-			9,092
	Federal Home Loan Bank stock		1,887		1,887			-		-			1,887
	Accrued interest receivable		2,095		2,095			-		-			2,095
	Financial liabilities:
	Deposits	$	586,112	$	416,254		$	-	$	170,542		$	586,796
	Short-term borrowings		14,808		14,808			-		-			14,808
	Other borrowings		10,624		-					10,822			10,822
	Accrued interest payable		315		315			-		-			315
		31-Dec-13
		Carrying										Total
		Value		Level I			Level II		Level III			Fair Value
		(in thousands)
	Financial assets:
	Cash and cash equivalents	$	26,193	$	26,193		$	-	$	-		$	26,193
	Investment securities Available for sale		157,143		-			157,143		-			157,143
	Net loans		428,679		-			-		430,502			430,502
	Bank-owned life insurance		8,816		8,816			-		-			8,816
	Federal Home Loan Bank stock		1,887		1,887			-		-			1,887
	Accrued interest receivable		2,135		2,135			-		-			2,135
	Financial liabilities:
	Deposits	$	568,836	$	394,422		$	-	$	175,854		$	570,276
	Short-term borrowings		10,809		10,809			-		-			10,809
	Other borrowings		11,609		-					11,787			11,787
	Accrued interest payable		364		364			-		-			364

Note_18_Accumulated_Other_Comp1

Note 18 - Accumulated Other Comprehensive Income (Loss) (Tables)	12 Months Ended
	Dec. 31, 2014
Disclosure Text Block [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]		Unrealized gains on
		available-for-sale
	(Dollars in thousands)	securities (a)
	Balance as of December 31, 2013	$	(2,237	)
	Other comprehensive income before reclassification		4,949
	Amount reclassified from accumulated other comprehensive income (loss)		(164	)
	Period change		4,785
	Balance at December 31, 2014	$	2,548
		Unrealized gains on
		available for sale
	(Dollars in thousands)	securities (a)
	Balance as of December 31, 2012	$	5,391
	Other comprehensive loss before reclassification		(7,620	)
	Amount reclassified from accumulated other comprehensive income (loss)		(8	)
	Period change		(7,628	)
	Balance at December 31, 2013	$	(2,237	)
Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]	(Dollars in thousands)
	Details about other comprehensive income	Amount Reclassified from Accumulated Other Comprehensive Income (Loss) (a)			Affected Line Item in
		31-Dec-14			the Statement Where
					Net Income is Presented
	Unrealized gains (losses) on available-for-sale securities
		$	(248	)	Investment securities gains, net
			84		Income taxes
		$	(164	)	Net of tax
	(Dollars in thousands)
	Details about other comprehensive income	Amount Reclassified from Accumulated Other Comprehensive			Affected Line Item in
		Income (Loss) (a)			the Statement Where
		31-Dec-13			Net Income is Presented
	Unrealized gains (losses) on available-for-sale securities
		$	(11	)	Investment securities gains, net
			3		Income taxes
		$	(8	)	Net of tax

Note_19_Parent_Company_Tables

Note 19 - Parent Company (Tables)	12 Months Ended
	Dec. 31, 2014
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Condensed Balance Sheet [Table Text Block]	CONDENSED BALANCE SHEET
	(Dollar amounts in thousands)	December 31,
		2014			2013
	ASSETS
	Cash and due from banks	$	466		$	797
	Investment securities available for sale		783			750
	Investment in nonbank subsidiary		2,534			2,560
	Investment in subsidiary bank		69,514			59,951
	Other assets		1,981			1,615
	TOTAL ASSETS	$	75,278		$	65,673
	LIABILITIES
	Trust preferred securities	$	8,248		$	8,248
	Short-term borrowings		3,136			3,895
	Other liabilities		27			57
	TOTAL LIABILITIES		11,411			12,200
	STOCKHOLDERS' EQUITY		63,867			53,473
	TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$	75,278		$	65,673
Condensed Income Statement [Table Text Block]	CONDENSED STATEMENT OF INCOME AND COMPREHENSIVE INCOME
		Year Ended December 31,
	(Dollar amounts in thousands)	2014			2013			2012
	INCOME
	Dividends from subsidiary bank	$	3,142		$	2,198		$	2,327
	Other		8			5			8
	Total income		3,150			2,203			2,335
	EXPENSES
	Interest expense		304			361			417
	Other		816			475			594
	Total expenses		1,120			836			1,011
	Income before income tax benefit		2,030			1,367			1,324
	Income tax benefit		(378	)		(283	)		(342	)
	Income before equity in undistributed net income of subsidiaries		2,408			1,650			1,666
	Equity in undistributed net income of subsidiaries		4,772			5,378			4,615
	NET INCOME	$	7,180		$	7,028		$	6,281
	Comprehensive Income (Loss)	$	11,965		$	(600	)	$	7,131
Condensed Cash Flow Statement [Table Text Block]	CONDENSED STATEMENT OF CASH FLOWS
		Year Ended December 31,
	(Dollar amounts in thousands)	2014			2013			2012
	OPERATING ACTIVITIES
	Net income	$	7,180		$	7,028		$	6,281
	Adjustments to reconcile net income to net cash provided by operating activities:
	Equity in undistributed net income of Middlefield Banking Company		(4,798	)		(4,884	)		(4,655	)
	Equity in undistributed net income of Emerald Bank		-			(598	)		(240	)
	Equity in undistributed net loss of EMORECO		26			104			280
	Stock-based compensation expense		10			-			32
	Other		(409	)		(253	)		(885	)
	Net cash provided by operating activities		2,009			1,397			813
	FINANCING ACTIVITIES
	Net decrease in short-term borrowings		(759	)		(976	)		(804	)
	Common stock issued		-			74			2,329
	Stock options exercised		(50	)		(77	)		-
	Proceeds from dividend reinvestment plan		590			736			694
	Cash dividends		(2,121	)		(2,097	)		(2,002	)
	Net cash (used for) provided by financing activities		(2,340	)		(2,340	)		217
	(Decrease) increase in cash		(331	)		(943	)		1,030
	CASH AT BEGINNING OF YEAR		797			1,740			710
	CASH AT END OF YEAR	$	466		$	797		$	1,740

Note_20_Selected_Quarterly_Fin1

Note 20 - Selected Quarterly Financial Data (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Schedule of Quarterly Financial Information [Table Text Block]	(Dollar amounts in thousands)	Three Months Ended
		March 31,		June 30,		September 30,		December 31,
		2014		2014		2014		2014
	Total interest income	$	6,989	$	6,919	$	6,911	$	7,055
	Total interest expense		1,033		1,033		999		1,005
	Net interest income		5,956		5,886		5,912		6,050
	Provision for loan losses		180		120		70		-
	Net interest income after provision for loan losses		5,776		5,766		5,842		6,050
	Total noninterest income		715		857		990		1,026
	Total noninterest expense		4,229		4,598		4,385		4,638
	Income before income taxes		2,262		2,025		2,447		2,438
	Income taxes		499		414		529		550
	Net income	$	1,763	$	1,611	$	1,918	$	1,888
	Per share data:
	Net income
	Basic	$	0.87	$	0.79	$	0.94	$	0.92
	Diluted		0.86		0.79		0.93		0.92
	Average shares outstanding:
	Basic		2,033,480		2,038,026		2,044,124		2,049,536
	Diluted		2,039,515		2,044,564		2,052,012		2,059,561
	(Dollar amounts in thousands)	Three Months Ended
		March 31,		June 30,		September 30,		December 31,
		2013		2013		2013		2013
	Total interest income	$	7,014	$	6,947	$	7,174	$	7,043
	Total interest expense		1,429		1,357		1,328		1,136
	Net interest income		5,585		5,590		5,846		5,907
	Provision for loan losses		313		300		153		(570	)
	Net interest income after provision for loan losses		5,272		5,290		5,693		6,477
	Total noninterest income		868		819		808		650
	Total noninterest expense		4,001		3,948		4,115		4,806
	Income before income taxes		2,139		2,161		2,386		2,321
	Income taxes		482		476		521		500
	Net income	$	1,657	$	1,685	$	1,865	$	1,821
	Per share data:
	Net income
	Basic	$	0.84	$	0.82	$	0.92	$	0.9
	Diluted		0.83		0.82		0.92		0.9
	Average shares outstanding:
	Basic		1,999,645		2,017,264		2,022,490		2,027,680
	Diluted		2,010,292		2,023,961		2,029,420		2,032,611

Note_1_Summary_of_Significant_1

Note 1 - Summary of Significant Accounting Policies (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Number of Branches	10
Restricted Stock or Unit Expense			$32,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	11,223	21,112
	$50,000	$77,000
Furniture Fixtures and Equipment [Member] | Minimum [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Furniture Fixtures and Equipment [Member] | Maximum [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Useful Life	20 years
Building and Building Improvements [Member] | Minimum [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Building and Building Improvements [Member] | Maximum [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Useful Life	40 years
Restricted Stock [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures	0	0	1,722
Core Deposits [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Finite-Lived Intangible Asset, Useful Life	10 years

Note_2_Earnings_Per_Share_Deta

Note 2 - Earnings Per Share (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Note 2 - Earnings Per Share (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	46,451	58,581	79,693
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Lower Range Limit	$17.55	$17.55	$17.55
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Upper Range Limit	$40.24	$40.24	$40.24
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	7,871	7,178	4,972
Incremental Common Shares Attributable to Dilutive Effect of Call Options and Warrants			12,419
Share Price			$16
Equity Option [Member]
Note 2 - Earnings Per Share (Details) [Line Items]
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	28,282	39,808	8,875

Note_2_Earnings_Per_Share_Deta1

Note 2 - Earnings Per Share (Details) - Shares Used in Calculation of Earnings Per Share	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Shares Used in Calculation of Earnings Per Share [Abstract]
Weighted-average common shares outstanding									2,231,165	2,206,392	2,101,490
Average treasury stock shares									-189,530	-189,530	-189,530
Weighted-average common shares and common stock equivalents used to calculate basic earnings per share	2,049,536	2,044,124	2,038,026	2,033,480	2,027,680	2,022,490	2,017,264	1,999,645	2,041,635	2,016,862	1,911,960
Additional common stock equivalents used to calculate diluted earnings per share									7,871	7,178	4,972
Weighted-average common shares and common stock equivalents used to calculate diluted earnings per share	2,059,561	2,052,012	2,044,564	2,039,515	2,032,611	2,029,420	2,023,961	2,010,292	2,049,506	2,024,040	1,916,932

Note_3_Investment_Securities_A2

Note 3 - Investment Securities Available For Sale (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Investments, Debt and Equity Securities [Abstract]
Available-for-sale Securities Pledged as Collateral	$61,900,000	$66,300,000
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	66
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held	$0
Percentage of Portfolio	97.60%

Note_3_Investment_Securities_A3

Note 3 - Investment Securities Available For Sale (Details) - Amortized Cost and Fair Values of Securities Available for Sale (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Note 3 - Investment Securities Available For Sale (Details) - Amortized Cost and Fair Values of Securities Available for Sale [Line Items]
Amortized Cost	$150,476	$160,532
Gross Unrealized Gains	5,095	2,605
Gross Unrealized Losses	-1,237	-5,994
Fair Value	154,334	157,143
US Government Agencies Debt Securities [Member]
Note 3 - Investment Securities Available For Sale (Details) - Amortized Cost and Fair Values of Securities Available for Sale [Line Items]
Amortized Cost	23,035	27,289
Gross Unrealized Gains	311	135
Gross Unrealized Losses	-450	-1,661
Fair Value	22,896	25,763
US States and Political Subdivisions Debt Securities [Member] | Taxable [Member]
Note 3 - Investment Securities Available For Sale (Details) - Amortized Cost and Fair Values of Securities Available for Sale [Line Items]
Amortized Cost	2,953	3,787
Gross Unrealized Gains	226	46
Gross Unrealized Losses		-38
Fair Value	3,179	3,795
US States and Political Subdivisions Debt Securities [Member] | Tax-exempt [Member]
Note 3 - Investment Securities Available For Sale (Details) - Amortized Cost and Fair Values of Securities Available for Sale [Line Items]
Amortized Cost	91,916	86,524
Gross Unrealized Gains	3,803	1,562
Gross Unrealized Losses	-553	-3,267
Fair Value	95,166	84,819
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Note 3 - Investment Securities Available For Sale (Details) - Amortized Cost and Fair Values of Securities Available for Sale [Line Items]
Amortized Cost	29,150	38,816
Gross Unrealized Gains	475	535
Gross Unrealized Losses	-234	-1,028
Fair Value	29,391	38,323
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Note 3 - Investment Securities Available For Sale (Details) - Amortized Cost and Fair Values of Securities Available for Sale [Line Items]
Amortized Cost	2,672	3,366
Gross Unrealized Gains	247	327
Fair Value	2,919	3,693
Debt Securities [Member]
Note 3 - Investment Securities Available For Sale (Details) - Amortized Cost and Fair Values of Securities Available for Sale [Line Items]
Amortized Cost	149,726	159,782
Gross Unrealized Gains	5,062	2,605
Gross Unrealized Losses	-1,237	-5,994
Fair Value	153,551	156,393
Equity Securities in Financial Institutions [Member]
Note 3 - Investment Securities Available For Sale (Details) - Amortized Cost and Fair Values of Securities Available for Sale [Line Items]
Amortized Cost	750	750
Gross Unrealized Gains	33
Fair Value	$783	$750

Note_3_Investment_Securities_A4

Note 3 - Investment Securities Available For Sale (Details) - Amortized Cost and Fair Value of Debt Securities by Contractual Maturity (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Amortized Cost and Fair Value of Debt Securities by Contractual Maturity [Abstract]
Due in one year or less	$571
Due in one year or less	585
Due after one year through five years	10,029
Due after one year through five years	10,200
Due after five years through ten years	20,960
Due after five years through ten years	21,602
Due after ten years	118,166
Due after ten years	121,164
Total	149,726
Total	$153,551

Note_3_Investment_Securities_A5

Note 3 - Investment Securities Available For Sale (Details) - Sales of Available for Sale Securities (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Sales of Available for Sale Securities [Abstract]
Proceeds from sales	$8,383	$25,088	$32,985
Gross realized gains	306	186	704
Gross realized losses	($58)	($175)	($94)

Note_3_Investment_Securities_A6

Note 3 - Investment Securities Available For Sale (Details) - Gross Unrealized Losses and Fair Value (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Note 3 - Investment Securities Available For Sale (Details) - Gross Unrealized Losses and Fair Value [Line Items]
Less than Twelve Months, Fair Value	$2,406	$59,255
Less than Twelve Months, Gross Unrealized Losses	-10	-4,608
Twelve Months or Greater, Fair Value	50,740	15,092
Twelve Months or Greater, Gross Unrealized Losses	-1,227	-1,386
Total, Fair Value	53,146	74,347
Total, Gross Unrealized Losses	-1,237	-5,994
US Government Agencies Debt Securities [Member]
Note 3 - Investment Securities Available For Sale (Details) - Gross Unrealized Losses and Fair Value [Line Items]
Less than Twelve Months, Fair Value		13,130
Less than Twelve Months, Gross Unrealized Losses		-929
Twelve Months or Greater, Fair Value	15,734	7,166
Twelve Months or Greater, Gross Unrealized Losses	-450	-732
Total, Fair Value	15,734	20,295
Total, Gross Unrealized Losses	-450	-1,661
US States and Political Subdivisions Debt Securities [Member] | Tax-exempt [Member]
Note 3 - Investment Securities Available For Sale (Details) - Gross Unrealized Losses and Fair Value [Line Items]
Less than Twelve Months, Fair Value	2,406	26,743
Less than Twelve Months, Gross Unrealized Losses	-10	-2,883
Twelve Months or Greater, Fair Value	18,232	2,678
Twelve Months or Greater, Gross Unrealized Losses	-543	-383
Total, Fair Value	20,638	29,421
Total, Gross Unrealized Losses	-553	-3,267
US States and Political Subdivisions Debt Securities [Member] | Taxable [Member]
Note 3 - Investment Securities Available For Sale (Details) - Gross Unrealized Losses and Fair Value [Line Items]
Less than Twelve Months, Fair Value		1,301
Less than Twelve Months, Gross Unrealized Losses		-38
Total, Fair Value		1,301
Total, Gross Unrealized Losses		-38
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Note 3 - Investment Securities Available For Sale (Details) - Gross Unrealized Losses and Fair Value [Line Items]
Less than Twelve Months, Fair Value		18,082
Less than Twelve Months, Gross Unrealized Losses		-757
Twelve Months or Greater, Fair Value	16,774	5,248
Twelve Months or Greater, Gross Unrealized Losses	-234	-271
Total, Fair Value	16,774	23,330
Total, Gross Unrealized Losses	($234)	($1,028)

Note_4_Loans_and_Related_Allow2

Note 4 - Loans and Related Allowance for Loan Losses (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Note 4 - Loans and Related Allowance for Loan Losses (Details) [Line Items]
Number of Days Past Due	90 days
Financing Receivable, Modifications, Recorded Investment	$2,900,000	$5,500,000
Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans	207,000	439,000	756,000
Loans and Leases Receivable, Net Amount	463,738,000	428,679,000
Loans and Leases Receivable, Allowance	6,846,000	7,046,000	7,779,000	6,819,000
Real Estate Construction [Member]
Note 4 - Loans and Related Allowance for Loan Losses (Details) [Line Items]
Loans and Leases Receivable, Net Amount	900,000	600,000
Loans and Leases Receivable, Allowance	868,000	576,000	1,123,000	438,000
Commercial Real Estate Mortgage [Member]
Note 4 - Loans and Related Allowance for Loan Losses (Details) [Line Items]
Loans and Leases Receivable, Allowance	1,576,000	2,170,000	1,991,000	1,306,000
Loans Receivable, Paid Off During Period, Allowance Recorded	500,000
Threshold for Loans Evaluated for Impairment [Member] | Outside Consultant [Member]
Note 4 - Loans and Related Allowance for Loan Losses (Details) [Line Items]
Loans and Leases Receivable, Gross, Commercial	250,000
Threshold for Loans Evaluated for Impairment [Member] | Criticized Relationships [Member]
Note 4 - Loans and Related Allowance for Loan Losses (Details) [Line Items]
Financing Receivable, Gross	125,000
Threshold for Loans Evaluated for Impairment [Member]
Note 4 - Loans and Related Allowance for Loan Losses (Details) [Line Items]
Notes, Loans and Financing Receivable, Gross, Current	150,000
Loans and Leases Receivable, Gross, Commercial	$1,000,000

Note_4_Loans_and_Related_Allow3

Note 4 - Loans and Related Allowance for Loan Losses (Details) - Major Classifications of Net Loans (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable Gross	$470,584	$435,725
Less allowance for loan and lease losses	-6,846	-7,046	-7,779	-6,819
Net loans	463,738	428,679
Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable Gross	60,744	54,498
Less allowance for loan and lease losses	-642	-614	-1,732	-1,296
Real Estate Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable Gross	30,296	25,601
Less allowance for loan and lease losses	-868	-576	-1,123	-438
Net loans	900	600
Residential Real Estate Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable Gross	227,552	210,310
Less allowance for loan and lease losses	-3,703	-3,664	-2,872	-3,731
Commercial Real Estate Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable Gross	147,413	141,171
Less allowance for loan and lease losses	-1,576	-2,170	-1,991	-1,306
Consumer Installment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable Gross	4,579	4,145
Less allowance for loan and lease losses	($57)	($22)	($61)	($48)

Note_4_Loans_and_Related_Allow4

Note 4 - Loans and Related Allowance for Loan Losses (Details) - Primary Segments of the Loan Portfolio (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Loans:
Individually evaluated for impairment	$14,368	$18,965
Collectively evaluated for impairment	456,216	416,760
Total loans	470,584	435,725
Commercial and Industrial [Member]
Loans:
Individually evaluated for impairment	1,393	1,891
Collectively evaluated for impairment	59,351	52,607
Total loans	60,744	54,498
Real Estate Construction [Member]
Loans:
Individually evaluated for impairment	3,296	4,011
Collectively evaluated for impairment	27,000	21,590
Total loans	30,296	25,601
Residential Real Estate Mortgage [Member]
Loans:
Individually evaluated for impairment	5,183	5,882
Collectively evaluated for impairment	222,369	204,428
Total loans	227,552	210,310
Commercial Real Estate Mortgage [Member]
Loans:
Individually evaluated for impairment	4,490	7,175
Collectively evaluated for impairment	142,923	133,996
Total loans	147,413	141,171
Consumer Installment [Member]
Loans:
Individually evaluated for impairment	6	6
Collectively evaluated for impairment	4,573	4,139
Total loans	$4,579	$4,145

Note_4_Loans_and_Related_Allow5

Note 4 - Loans and Related Allowance for Loan Losses (Details) - Allowance for Loan Losses (USD $)	3 Months Ended							12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Ending allowance balance attributable to loans:
Individually evaluated for impairment				$1,807				$1,596	$1,807
Collectively evaluated for impairment				5,239				5,250	5,239
Balance				7,046				6,846	7,046	7,779	6,819
Charge-offs								-1,212	-1,330	-1,337
Recoveries								642	401	129
Provision	70	120	180	-570	153	300	313	370	196	2,168
Commercial and Industrial [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment				179				83	179
Collectively evaluated for impairment				435				559	435
Balance				614				642	614	1,732	1,296
Charge-offs								-237	-419	-230
Recoveries								121	191	71
Provision								144	-890	595
Real Estate Construction [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment				210				589	210
Collectively evaluated for impairment				366				279	366
Balance				576				868	576	1,123	438
Charge-offs									-191	-135
Recoveries								60	33
Provision								232	-389	820
Residential Real Estate Mortgage [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment				855				892	855
Collectively evaluated for impairment				2,809				2,811	2,809
Balance				3,664				3,703	3,664	2,872	3,731
Charge-offs								-671	-675	-785
Recoveries								267	107	31
Provision								443	1,360	-105
Commercial Real Estate Mortgage [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment				563				30	563
Collectively evaluated for impairment				1,607				1,546	1,607
Balance				2,170				1,576	2,170	1,991	1,306
Charge-offs								-260		-123
Recoveries								40	46
Provision								-374	133	808
Consumer Installment [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment								2
Collectively evaluated for impairment				22				55	22
Balance				22				57	22	61	48
Charge-offs								-44	-45	-64
Recoveries								154	24	27
Provision								($75)	($18)	$50

Note_4_Loans_and_Related_Allow6

Note 4 - Loans and Related Allowance for Loan Losses (Details) - Impaired Loans by Class (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
With no related allowance recorded:
Recorded investment, with no related allowance	$10,119	$9,284
Unpaid principal balance, with no related allowance	10,107	9,472
With an allowance recorded:
Recorded investment, with related allowance	4,249	9,681
Unpaid principal balance, with related allowance	4,246	9,720
Related allowance	1,596	1,807
Total:
Recorded investment	14,368	18,965
Unpaid principal balance	14,353	19,192
Related allowance	1,596	1,807
Commercial and Industrial [Member]
With no related allowance recorded:
Recorded investment, with no related allowance	1,146	1,357
Unpaid principal balance, with no related allowance	1,145	1,357
With an allowance recorded:
Recorded investment, with related allowance	247	534
Unpaid principal balance, with related allowance	247	534
Related allowance	83	179
Total:
Recorded investment	1,393	1,891
Unpaid principal balance	1,392	1,891
Related allowance	83	179
Real Estate Construction [Member]
With no related allowance recorded:
Recorded investment, with no related allowance	2,707	124
Unpaid principal balance, with no related allowance	2,705	124
With an allowance recorded:
Recorded investment, with related allowance	589	3,887
Unpaid principal balance, with related allowance	589	3,887
Related allowance	589	210
Total:
Recorded investment	3,296	4,011
Unpaid principal balance	3,294	4,011
Related allowance	589	210
Residential Real Estate Mortgage [Member]
With no related allowance recorded:
Recorded investment, with no related allowance	2,202	2,704
Unpaid principal balance, with no related allowance	2,197	2,892
With an allowance recorded:
Recorded investment, with related allowance	2,981	3,178
Unpaid principal balance, with related allowance	2,978	3,217
Related allowance	892	855
Total:
Recorded investment	5,183	5,882
Unpaid principal balance	5,175	6,109
Related allowance	892	855
Commercial Real Estate Mortgage [Member]
With no related allowance recorded:
Recorded investment, with no related allowance	4,064	5,093
Unpaid principal balance, with no related allowance	4,060	5,093
With an allowance recorded:
Recorded investment, with related allowance	426	2,082
Unpaid principal balance, with related allowance	426	2,082
Related allowance	30	563
Total:
Recorded investment	4,490	7,175
Unpaid principal balance	4,486	7,175
Related allowance	30	563
Consumer Installment [Member]
With no related allowance recorded:
Recorded investment, with no related allowance		6
Unpaid principal balance, with no related allowance		6
With an allowance recorded:
Recorded investment, with related allowance	6
Unpaid principal balance, with related allowance	6
Related allowance	2
Total:
Recorded investment	6	6
Unpaid principal balance	6	6
Related allowance	$2

Note_4_Loans_and_Related_Allow7

Note 4 - Loans and Related Allowance for Loan Losses (Details) - Additional Information on Impaired Loans (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Note 4 - Loans and Related Allowance for Loan Losses (Details) - Additional Information on Impaired Loans [Line Items]
Impaired Financing Receivable - Average Recorded Investment	$16,960	$17,824	$14,582
Impaired Financing Receivable - Interest Income Recognized	640	1,090	1,388
Commercial and Industrial [Member]
Note 4 - Loans and Related Allowance for Loan Losses (Details) - Additional Information on Impaired Loans [Line Items]
Impaired Financing Receivable - Average Recorded Investment	1,989	2,187	2,776
Impaired Financing Receivable - Interest Income Recognized	85	119	348
Real Estate Construction [Member]
Note 4 - Loans and Related Allowance for Loan Losses (Details) - Additional Information on Impaired Loans [Line Items]
Impaired Financing Receivable - Average Recorded Investment	3,631	3,743	2,798
Impaired Financing Receivable - Interest Income Recognized	154	183	156
Residential Real Estate Mortgage [Member]
Note 4 - Loans and Related Allowance for Loan Losses (Details) - Additional Information on Impaired Loans [Line Items]
Impaired Financing Receivable - Average Recorded Investment	5,331	5,380	4,263
Impaired Financing Receivable - Interest Income Recognized	171	293	338
Commercial Real Estate Mortgage [Member]
Note 4 - Loans and Related Allowance for Loan Losses (Details) - Additional Information on Impaired Loans [Line Items]
Impaired Financing Receivable - Average Recorded Investment	5,998	6,500	4,717
Impaired Financing Receivable - Interest Income Recognized	229	493	543
Consumer Installment [Member]
Note 4 - Loans and Related Allowance for Loan Losses (Details) - Additional Information on Impaired Loans [Line Items]
Impaired Financing Receivable - Average Recorded Investment	11	13	27
Impaired Financing Receivable - Interest Income Recognized	$1	$1	$3

Note_4_Loans_and_Related_Allow8

Note 4 - Loans and Related Allowance for Loan Losses (Details) - Troubled Debt Restructurings (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Rate Forgiveness [Member] | Residential Real Estate Mortgage [Member]
Real estate- mortgage:
Number of Contracts		7	2
Rate Forgiveness [Member] | Commercial Real Estate Mortgage [Member]
Real estate- mortgage:
Number of Contracts		2
Rate Forgiveness [Member] | Consumer Installment [Member]
Real estate- mortgage:
Number of Contracts	1
Rate Forgiveness [Member] | Commercial and Industrial [Member]
Real estate- mortgage:
Number of Contracts		6	1
Other Restructurings [Member] | Residential Real Estate Mortgage [Member]
Real estate- mortgage:
Number of Contracts	3		7
Other Restructurings [Member] | Commercial Real Estate Mortgage [Member]
Real estate- mortgage:
Number of Contracts	1		1
Other Restructurings [Member] | Consumer Installment [Member]
Real estate- mortgage:
Number of Contracts			2
Other Restructurings [Member] | Commercial and Industrial [Member]
Real estate- mortgage:
Number of Contracts		1	12
Residential Real Estate Mortgage [Member]
Real estate- mortgage:
Number of Contracts	3	7	9
Pre-Modification Outstanding Recorded Investment (in Dollars)	$140	$784	$921
Commercial Real Estate Mortgage [Member]
Real estate- mortgage:
Number of Contracts	1	2	1
Pre-Modification Outstanding Recorded Investment (in Dollars)	48	834	156
Consumer Installment [Member]
Real estate- mortgage:
Number of Contracts	1		2
Pre-Modification Outstanding Recorded Investment (in Dollars)	6		11
Commercial and Industrial [Member]
Real estate- mortgage:
Number of Contracts		7	13
Pre-Modification Outstanding Recorded Investment (in Dollars)		$1,264	$489

Note_4_Loans_and_Related_Allow9

Note 4 - Loans and Related Allowance for Loan Losses (Details) - Troubled Debt Restructurings Subsequently Defaulted (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2012	Dec. 31, 2013
Residential Real Estate Mortgage [Member]
Real estate- mortgage:
Number of contracts	1	2
Recorded investment	$15	$89
Commercial and Industrial [Member]
Real estate- mortgage:
Number of contracts		6	5
Recorded investment		256	574
Commercial Real Estate Mortgage [Member]
Real estate- mortgage:
Number of contracts			1
Recorded investment			190
Real Estate Construction [Member]
Real estate- mortgage:
Number of contracts		1
Recorded investment		3,622
Consumer Installment [Member]
Real estate- mortgage:
Number of contracts		1
Recorded investment		$5

Recovered_Sheet1

Note 4 - Loans and Related Allowance for Loan Losses (Details) - Classes of the Loan Portfolio Summarized by Credit Quality (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	$470,584	$435,725
Commercial and Industrial [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	58,976	52,078
Commercial and Industrial [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable		772
Commercial and Industrial [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	1,730	1,605
Commercial and Industrial [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	38	43
Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	60,744	54,498
Real Estate Construction [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	29,212	24,052
Real Estate Construction [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	495	907
Real Estate Construction [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable		642
Real Estate Construction [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	589
Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	30,296	25,601
Residential Real Estate Mortgage [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	218,244	198,479
Residential Real Estate Mortgage [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	584	774
Residential Real Estate Mortgage [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	8,724	11,057
Residential Real Estate Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	227,552	210,310
Commercial Real Estate Mortgage [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	137,755	132,931
Commercial Real Estate Mortgage [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	3,908	2,232
Commercial Real Estate Mortgage [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	5,750	6,008
Commercial Real Estate Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	147,413	141,171
Consumer Installment [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	4,572	4,129
Consumer Installment [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	7	16
Consumer Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	4,579	4,145
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	448,759	411,669
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	4,987	4,685
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	16,211	19,328
Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	$627	$43

Recovered_Sheet2

Note 4 - Loans and Related Allowance for Loan Losses (Details) - Past Due Financing Receivables (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, current balance	$465,164	$426,466
Loans, 30-59 days past due	2,471	4,316
Loans, 60-89 days past due	434	1,598
Loans, 90+ days past due	2,515	3,345
Loans, total past due	5,420	9,259
Loans, total	470,584	435,725
Commercial and Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, current balance	60,296	53,440
Loans, 30-59 days past due	349	529
Loans, 60-89 days past due	68	359
Loans, 90+ days past due	31	170
Loans, total past due	448	1,058
Loans, total	60,744	54,498
Real Estate Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, current balance	30,296	24,945
Loans, 30-59 days past due		17
Loans, 60-89 days past due		639
Loans, total past due		656
Loans, total	30,296	25,601
Residential Real Estate Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, current balance	223,209	203,747
Loans, 30-59 days past due	2,065	3,082
Loans, 60-89 days past due	363	481
Loans, 90+ days past due	1,915	3,000
Loans, total past due	4,343	6,563
Loans, total	227,552	210,310
Commercial Real Estate Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, current balance	146,816	140,251
Loans, 30-59 days past due	30	645
Loans, 60-89 days past due		100
Loans, 90+ days past due	567	175
Loans, total past due	597	920
Loans, total	147,413	141,171
Consumer Installment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, current balance	4,547	4,083
Loans, 30-59 days past due	27	43
Loans, 60-89 days past due	3	19
Loans, 90+ days past due	2
Loans, total past due	32	62
Loans, total	$4,579	$4,145

Recovered_Sheet3

Note 4 - Loans and Related Allowance for Loan Losses (Details) - Classes of the Loan Portfolio Summarized by Nonaccrual Loans and Still Accruing (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Note 4 - Loans and Related Allowance for Loan Losses (Details) - Classes of the Loan Portfolio Summarized by Nonaccrual Loans and Still Accruing [Line Items]
Loans, nonacrrual status	$7,347	$8,338
Loans, 90+ days past due and accruing	165	181
Commercial and Industrial [Member]
Note 4 - Loans and Related Allowance for Loan Losses (Details) - Classes of the Loan Portfolio Summarized by Nonaccrual Loans and Still Accruing [Line Items]
Loans, nonacrrual status	365	176
Loans, 90+ days past due and accruing		38
Real Estate Construction [Member]
Note 4 - Loans and Related Allowance for Loan Losses (Details) - Classes of the Loan Portfolio Summarized by Nonaccrual Loans and Still Accruing [Line Items]
Loans, nonacrrual status	587
Residential Real Estate Mortgage [Member]
Note 4 - Loans and Related Allowance for Loan Losses (Details) - Classes of the Loan Portfolio Summarized by Nonaccrual Loans and Still Accruing [Line Items]
Loans, nonacrrual status	5,438	7,411
Loans, 90+ days past due and accruing	165	143
Commercial Real Estate Mortgage [Member]
Note 4 - Loans and Related Allowance for Loan Losses (Details) - Classes of the Loan Portfolio Summarized by Nonaccrual Loans and Still Accruing [Line Items]
Loans, nonacrrual status	955	743
Consumer Installment [Member]
Note 4 - Loans and Related Allowance for Loan Losses (Details) - Classes of the Loan Portfolio Summarized by Nonaccrual Loans and Still Accruing [Line Items]
Loans, nonacrrual status	$2	$8

Note_5_Premises_and_Equipment_1

Note 5 - Premises and Equipment (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Abstract]
Depreciation	$750,000	$676,000	$591,000

Note_5_Premises_and_Equipment_2

Note 5 - Premises and Equipment (Details) - Major Classifications of Premises and Equipment (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Major Classifications of Premises and Equipment [Abstract]
Land and land improvements	$1,943	$1,943
Building and leasehold improvements	11,133	10,832
Furniture, fixtures, and equipment	4,637	4,036
	17,713	16,811
Less accumulated depreciation and amortization	7,733	6,983
Total	$9,980	$9,828

Note_6_Goodwill_and_Intangible2

Note 6 - Goodwill and Intangible Assets (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Note 6 - Goodwill and Intangible Assets (Details) [Line Items]
Goodwill	$4,559,000	$4,559,000
Finite-Lived Core Deposits, Gross	116,000	156,000
Core Deposits [Member]
Note 6 - Goodwill and Intangible Assets (Details) [Line Items]
Finite-Lived Intangible Assets, Accumulated Amortization	280,000	240,000
Finite-Lived Intangible Asset, Useful Life	10 years
Amortization of Intangible Assets	$40,000	$40,000	$40,000

Note_6_Goodwill_and_Intangible3

Note 6 - Goodwill and Intangible Assets (Details) - Future Amortization Expense (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Note 6 - Goodwill and Intangible Assets (Details) - Future Amortization Expense [Line Items]
Total	$116	$156
Core Deposits [Member]
Note 6 - Goodwill and Intangible Assets (Details) - Future Amortization Expense [Line Items]
2015	40,000
2016	40,000
2017	36,000
Total	$116,000

Note_7_Other_Assets_Details_Co

Note 7 - Other Assets (Details) - Components of Other Assets (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Note 7 - Other Assets (Details) - Components of Other Assets [Line Items]
FHLB stock	$1,887	$1,887
Accrued interest	2,095	2,135
Deferred tax asset, net	1,484	3,688
Other real estate owned	2,590	2,698
Other	1,579	1,308
Total	9,635	11,716
Investment Securities [Member]
Note 7 - Other Assets (Details) - Components of Other Assets [Line Items]
Accrued interest	1,005	1,029
Loans 1 [Member]
Note 7 - Other Assets (Details) - Components of Other Assets [Line Items]
Accrued interest	$1,090	$1,106

Note_8_Deposits_Details

Note 8 - Deposits (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Disclosure Text Block [Abstract]
Time Deposit Maturities, Remainder of Fiscal Year	$100.10
Time Deposit Maturities, Year Two	31.8
Time Deposit Maturities, Year Three	13
Time Deposit Maturities, Year Four	13.5
Time Deposit Maturities, Year Five	11.5
Time Deposits, $250,000 or More	$54.60	$18

Note_9_Shortterm_Borrowings_De

Note 9 - Short-term Borrowings (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Note 9 - Short-term Borrowings (Details) [Line Items]
Long-term Line of Credit	$3.10	$3.90	$4.90
Lorain National Bank [Member]
Note 9 - Short-term Borrowings (Details) [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	4
Line of Credit Facility, Interest Rate During Period	3.66%
Liberty Bank NA [Member]
Note 9 - Short-term Borrowings (Details) [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$3
Line of Credit Facility, Interest Rate During Period	4.00%

Note_9_Shortterm_Borrowings_De1

Note 9 - Short-term Borrowings (Details) - Outstanding Balances and Related Information of Short-term Borrowings (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Short-term Debt [Line Items]
Balance at year-end	$14,808	$10,809
Average balance outstanding	8,379	8,806
Maximum month-end balance	$19,970	$17,351
Year End [Member]
Short-term Debt [Line Items]
Weighted-average rate	0.98%	1.44%
During the Year [Member]
Short-term Debt [Line Items]
Weighted-average rate	1.77%	3.15%

Note_10_Other_Borrowings_Detai

Note 10 - Other Borrowings (Details) (USD $)	1 Months Ended	12 Months Ended
	Dec. 31, 2006	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Note 10 - Other Borrowings (Details) [Line Items]
Annual Paydown of Principal Required		20.00%
Federal Home Loan Bank, Advances, General Debt Obligations, Amount of Available, Unused Funds		$87,900,000
Stock Issued During Period, Value, New Issues	248,000		74,000	2,329,000
Notes Payable	8,248,000
Mandatorily Redeemable Securities [Member] | Special Purpose Entity [Member]
Note 10 - Other Borrowings (Details) [Line Items]
Securities Sold under Agreements to Repurchase	$8,000,000
London Interbank Offered Rate (LIBOR) [Member]
Note 10 - Other Borrowings (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.67%

Note_10_Other_Borrowings_Detai1

Note 10 - Other Borrowings (Details) - Other Borrowings (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Note 10 - Other Borrowings (Details) - Other Borrowings [Line Items]
Balance	$10,624	$11,609
Fixed Rate Amortizing [Member] | Minimum [Member]
Note 10 - Other Borrowings (Details) - Other Borrowings [Line Items]
Stated interest rate	2.99%
Fixed Rate Amortizing [Member] | Maximum [Member]
Note 10 - Other Borrowings (Details) - Other Borrowings [Line Items]
Stated interest rate	4.48%
Fixed Rate Amortizing [Member]
Note 10 - Other Borrowings (Details) - Other Borrowings [Line Items]
Earliest Maturity Date	1-Jun-15
Latest Maturity Date	1-Oct-28
Weighted average interest rate	4.00%
Balance	2,376	3,361
Junior Subordinated Debt [Member] | Minimum [Member]
Note 10 - Other Borrowings (Details) - Other Borrowings [Line Items]
Stated interest rate	1.89%
Junior Subordinated Debt [Member] | Maximum [Member]
Note 10 - Other Borrowings (Details) - Other Borrowings [Line Items]
Stated interest rate	1.91%
Junior Subordinated Debt [Member]
Note 10 - Other Borrowings (Details) - Other Borrowings [Line Items]
Earliest Maturity Date	21-Dec-37
Latest Maturity Date	21-Dec-37
Weighted average interest rate	1.90%
Balance	$8,248	$8,248

Note_10_Other_Borrowings_Detai2

Note 10 - Other Borrowings (Details) - Maturities of Other Borrowings (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Maturities of Other Borrowings [Abstract]
2015	$685
2015	4.01%
2016	502
2016	4.00%
2017	373
2017	4.00%
2018	252
2018	4.02%
2019	155
2019	4.04%
Beyond 2019	8,657
Beyond 2019	2.00%
Total	$10,624	$11,609
Total	2.37%

Note_11_Other_Liabilities_Deta

Note 11 - Other Liabilities (Details) - Components of Other Liabilities (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Components of Other Liabilities [Abstract]
Accrued interest payable	$315	$364
Supplemental Executive Retirement Plan	828	727
Accrued salary expense	609	580
Other	368	692
Total	$2,120	$2,363

Note_12_Income_Taxes_Details

Note 12 - Income Taxes (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Deferred Tax Assets, Valuation Allowance	$0	$0
Unrecognized Tax Benefits	$0	$0

Note_12_Income_Taxes_Details_T

Note 12 - Income Taxes (Details) - The Provision (Benefit) for Federal Income Taxes (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
The Provision (Benefit) for Federal Income Taxes [Abstract]
Current payable									$2,146	$1,556	$1,660
Deferred									-154	423	2
Total provision	$550	$529	$414	$499	$500	$521	$476	$482	$1,992	$1,979	$1,662

Note_12_Income_Taxes_Details_D

Note 12 - Income Taxes (Details) - Deferred Tax Assets and Liabilities (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Deferred tax assets:
Allowance for loan and lease losses	$2,328	$2,396
Net unrealized loss on securities		1,152
Supplemental retirement plan	282	247
Investment security basis adjustment	66	66
Nonaccrual interest income	444	472
Deferred origination fees, net	295	171
OREO adjustments	94	107
Accrued compensation	207	197
Other	14	19
Gross deferred tax assets	3,730	4,827
Deferred tax liabilities:
Premises and equipment	385	503
Net unrealized gain on securities	1,311
FHLB stock dividends	225	225
Intangibles	353	304
Other	77	107
Gross deferred tax liabilities	2,351	1,139
Net deferred tax assets	$1,379	$3,688

Note_12_Income_Taxes_Details_T1

Note 12 - Income Taxes (Details) - Tax Rate Reconciliation (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Tax Rate Reconciliation [Abstract]
Provision at statutory rate									$3,119	$3,062	$2,700
Provision at statutory rate									34.00%	34.00%	34.00%
Tax-free income									-1,187	-1,138	-1,095
Tax-free income									-12.90%	-12.60%	-13.80%
Nondeductible interest expense									37	45	48
Nondeductible interest expense									0.40%	0.50%	0.60%
Other									23	10	9
Other									0.20%	0.10%	0.10%
Actual tax expense and effective rate	$550	$529	$414	$499	$500	$521	$476	$482	$1,992	$1,979	$1,662
Actual tax expense and effective rate									21.70%	22.00%	20.90%

Note_13_Employee_Benefits_Deta

Note 13 - Employee Benefits (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Maximum Matching Contribution [Member] | Retirement Plan [Member]
Note 13 - Employee Benefits (Details) [Line Items]
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent	6.00%
Maximum [Member] | Stock Option and Restricted Stock Plan [Member]
Note 13 - Employee Benefits (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term	10 years
Retirement Plan [Member] | Middlefield Banking Company [Member]
Note 13 - Employee Benefits (Details) [Line Items]
Defined Contribution Plan Annual Vesting Percentage	20.00%
Retirement Plan [Member]
Note 13 - Employee Benefits (Details) [Line Items]
Deferred Compensation Arrangement with Individual, Requisite Service Period	1 year
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	50.00%
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent	100.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	6 years
Defined Benefit Plan, Contributions by Employer	$143,000	$155,000	$125,000
Directors Retirement Plan [Member] | Middlefield Banking Company [Member]
Note 13 - Employee Benefits (Details) [Line Items]
Deferred Compensation Arrangement with Individual, Requisite Service Period	5 years
Retirement Benefits Term	10 years
Postretirement Benefits Percentage of Compensation	25.00%
Executive Deferred Compensation Plan [Member] | Middlefield Banking Company [Member]
Note 13 - Employee Benefits (Details) [Line Items]
Defined Contribution Plan, Employer Discretionary Contribution Amount	$115,000	$120,000	$139,000
Stock Option and Restricted Stock Plan [Member]
Note 13 - Employee Benefits (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares)	160,000
Omnibus Equity Plan [Member]
Note 13 - Employee Benefits (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares)	0	0	1,722

Note_13_Employee_Benefits_Deta1

Note 13 - Employee Benefits (Details) - Projected Benefit Payments (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Projected Benefit Payments [Abstract]
2015	$34,000
2016	29,000
2017	23,000
2018	18,000
2019	12,000
Thereafter	12,000
Total	$128,000

Note_13_Employee_Benefits_Deta2

Note 13 - Employee Benefits (Details) - Stock Option Activity (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Stock Option Activity [Abstract]
Outstanding, January 1	58,581	79,693
Outstanding, January 1	$28.38	$27.25
Exercised	-11,223	-21,112
Exercised	$30.45	$24.11
Forfeited	-907
Forfeited	$27.35
Outstanding, December 31	46,451	58,581
Outstanding, December 31	$27.90	$28.38
Exercisable, December 31	46,451	58,581
Exercisable, December 31	$27.90	$28.38

Note_13_Employee_Benefits_Deta3

Note 13 - Employee Benefits (Details) - Stocks Options Outstanding by Grant Date (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Note 13 - Employee Benefits (Details) - Stocks Options Outstanding by Grant Date [Line Items]
Shares Outstanding	46,451	58,581	79,693
Average Exercise Price, Outstanding (in Dollars per share)	$27.90	$28.38	$27.25
Shares, Exercisable	46,451	58,581
Average Exercise Price, Exercisable (in Dollars per share)	$27.90	$28.38
Granted December 14, 2005 [Member]
Note 13 - Employee Benefits (Details) - Stocks Options Outstanding by Grant Date [Line Items]
Shares Outstanding	7,163
Contractual Average Life, Outstanding	346 days
Average Exercise Price, Outstanding (in Dollars per share)	$36.73
Shares, Exercisable	7,163
Average Exercise Price, Exercisable (in Dollars per share)	$36.73
Granted December 10, 2006 [Member]
Note 13 - Employee Benefits (Details) - Stocks Options Outstanding by Grant Date [Line Items]
Shares Outstanding	3,150
Contractual Average Life, Outstanding	1 year 343 days
Average Exercise Price, Outstanding (in Dollars per share)	$40.24
Shares, Exercisable	3,150
Average Exercise Price, Exercisable (in Dollars per share)	$40.24
Granted April 19, 2007 [Member]
Note 13 - Employee Benefits (Details) - Stocks Options Outstanding by Grant Date [Line Items]
Shares Outstanding	3,639
Contractual Average Life, Outstanding	2 years 105 days
Average Exercise Price, Outstanding (in Dollars per share)	$37.33
Shares, Exercisable	3,639
Average Exercise Price, Exercisable (in Dollars per share)	$37.33
Granted May 16, 2007 [Member]
Note 13 - Employee Benefits (Details) - Stocks Options Outstanding by Grant Date [Line Items]
Shares Outstanding	1,337
Contractual Average Life, Outstanding	2 years 135 days
Average Exercise Price, Outstanding (in Dollars per share)	$37.48
Shares, Exercisable	1,337
Average Exercise Price, Exercisable (in Dollars per share)	$37.48
Granted December 10, 2007 [Member]
Note 13 - Employee Benefits (Details) - Stocks Options Outstanding by Grant Date [Line Items]
Shares Outstanding	2,450
Contractual Average Life, Outstanding	2 years 343 days
Average Exercise Price, Outstanding (in Dollars per share)	$37
Shares, Exercisable	2,450
Average Exercise Price, Exercisable (in Dollars per share)	$37
Granted January 2, 2008 [Member]
Note 13 - Employee Benefits (Details) - Stocks Options Outstanding by Grant Date [Line Items]
Shares Outstanding	1,337
Contractual Average Life, Outstanding	3 years
Average Exercise Price, Outstanding (in Dollars per share)	$36.25
Shares, Exercisable	1,337
Average Exercise Price, Exercisable (in Dollars per share)	$36.25
Granted November 10, 2008 [Member]
Note 13 - Employee Benefits (Details) - Stocks Options Outstanding by Grant Date [Line Items]
Shares Outstanding	18,500
Contractual Average Life, Outstanding	3 years 313 days
Average Exercise Price, Outstanding (in Dollars per share)	$23
Shares, Exercisable	18,500
Average Exercise Price, Exercisable (in Dollars per share)	$23
Granted May 9, 2011 [Member]
Note 13 - Employee Benefits (Details) - Stocks Options Outstanding by Grant Date [Line Items]
Shares Outstanding	8,875
Contractual Average Life, Outstanding	6 years 127 days
Average Exercise Price, Outstanding (in Dollars per share)	$17.55
Shares, Exercisable	8,875
Average Exercise Price, Exercisable (in Dollars per share)	$17.55

Note_14_Commitments_Details

Note 14 - Commitments (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Commitments and Contingencies Disclosure [Abstract]
Operating Leases, Rent Expense	$269,000	$301,000	$259,000

Note_14_Commitments_Details_Ou

Note 14 - Commitments (Details) - Outstanding Commitments and Contingent Liabilities (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Note 14 - Commitments (Details) - Outstanding Commitments and Contingent Liabilities [Line Items]
Outstanding Commitments	$102,461	$125,670
Commitments to Extend Credit [Member]
Note 14 - Commitments (Details) - Outstanding Commitments and Contingent Liabilities [Line Items]
Outstanding Commitments	97,947	120,861
Financial Standby Letter of Credit [Member]
Note 14 - Commitments (Details) - Outstanding Commitments and Contingent Liabilities [Line Items]
Outstanding Commitments	$4,514	$4,809

Note_14_Commitments_Details_Fu

Note 14 - Commitments (Details) - Future Payments Under Operating Leases (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Future Payments Under Operating Leases [Abstract]
2015	$221
2016	226
2017	230
2018	238
2019	240
Thereafter	203
	$1,358

Note_15_Regulatory_Restriction1

Note 15 - Regulatory Restrictions (Details) (USD $)	1 Months Ended	63 Months Ended
In Millions, except Share data, unless otherwise specified	Apr. 30, 2012	Dec. 31, 2014	Dec. 31, 2013	Jan. 14, 2013
Note 15 - Regulatory Restrictions (Details) [Line Items]
Reserves Required by Federal Reserve Bank		$6.80	$7.40
Percent of Common Stock			10.00%
Pursuant to Regulatory Clearance [Member] | One Investor [Member]
Note 15 - Regulatory Restrictions (Details) [Line Items]
Maximum Ownership of Stock				24.99%
One Investor [Member]
Note 15 - Regulatory Restrictions (Details) [Line Items]
Stock Issued During Period, Shares, New Issues	196,635
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	9.90%
Maximum Ownership of Stock		10.00%
Emerald Bank [Member]
Note 15 - Regulatory Restrictions (Details) [Line Items]
Nonperforming Assets Sold		5.8
Middlefield Banking Company [Member]
Note 15 - Regulatory Restrictions (Details) [Line Items]
Amount Available for Payment of Dividends			$10.20

Note_16_Regulatory_Capital_Det

Note 16 - Regulatory Capital (Details)	Dec. 31, 2014	Dec. 31, 2013
Disclosure Text Block [Abstract]
Capital Required to be Well Capitalized to Risk Weighted Assets	10.00%	10.00%
Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	6.00%	6.00%
Tier One Leverage Capital Required to be Well Capitalized to Average Assets	5.00%	5.00%

Note_16_Regulatory_Capital_Det1

Note 16 - Regulatory Capital (Details) - Capital Ratios (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
To Be Well Capitalized	10.00%	10.00%
To Be Well Capitalized	6.00%	6.00%
To Be Well Capitalized	5.00%	5.00%
Middlefield Banc Corp. [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Actual	70,693	64,220
Actual	14.64%	14.06%
For Capital Adequacy Purposes	38,642	36,541
For Capital Adequacy Purposes	8.00%	8.00%
To Be Well Capitalized	48,302	45,676
To Be Well Capitalized	10.00%	10.00%
Actual	64,645	58,494
Actual	13.38%	12.81%
For Capital Adequacy Purposes	19,321	18,270
For Capital Adequacy Purposes	4.00%	4.00%
To Be Well Capitalized	28,981	27,406
To Be Well Capitalized	6.00%	6.00%
Actual	64,645	58,494
Actual	9.60%	8.97%
For Capital Adequacy Purposes	26,945	26,093
For Capital Adequacy Purposes	4.00%	4.00%
To Be Well Capitalized	33,682	32,617
To Be Well Capitalized	5.00%	5.00%
Middlefield Banking Company [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Actual	68,325	53,194
Actual	14.19%	13.77%
For Capital Adequacy Purposes	38,507	30,906
For Capital Adequacy Purposes	8.00%	8.00%
To Be Well Capitalized	48,134	38,632
To Be Well Capitalized	10.00%	10.00%
Actual	62,315	48,364
Actual	12.95%	12.52%
For Capital Adequacy Purposes	19,253	15,453
For Capital Adequacy Purposes	4.00%	4.00%
To Be Well Capitalized	28,880	23,179
To Be Well Capitalized	6.00%	6.00%
Actual	62,315	48,364
Actual	9.25%	8.51%
For Capital Adequacy Purposes	26,945	22,735
For Capital Adequacy Purposes	4.00%	4.00%
To Be Well Capitalized	33,682	28,419
To Be Well Capitalized	5.00%	5.00%
Emerald Bank [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Actual		9,482
Actual		13.76%
For Capital Adequacy Purposes		5,514
For Capital Adequacy Purposes		8.00%
To Be Well Capitalized		6,893
To Be Well Capitalized		10.00%
Actual		8,605
Actual		12.48%
For Capital Adequacy Purposes		2,757
For Capital Adequacy Purposes		4.00%
To Be Well Capitalized		4,136
To Be Well Capitalized		6.00%
Actual		8,605
Actual		10.92%
For Capital Adequacy Purposes		3,152
For Capital Adequacy Purposes		4.00%
To Be Well Capitalized		3,940
To Be Well Capitalized		5.00%

Note_17_Fair_Value_Disclosure_2

Note 17 - Fair Value Disclosure Measurements (Details) - Assets Measured on a Recurring Basis (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Assets measured on a recurring basis:
Assets Measured on a Recurring Basis	$154,334	$157,143
US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Assets measured on a recurring basis:
Assets Measured on a Recurring Basis	22,896	25,763
US Government Agencies Debt Securities [Member]
Assets measured on a recurring basis:
Assets Measured on a Recurring Basis	22,896	25,763
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Assets measured on a recurring basis:
Assets Measured on a Recurring Basis	98,345	88,614
US States and Political Subdivisions Debt Securities [Member]
Assets measured on a recurring basis:
Assets Measured on a Recurring Basis	98,345	88,614
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] | Fair Value, Inputs, Level 2 [Member]
Assets measured on a recurring basis:
Assets Measured on a Recurring Basis	29,391	38,323
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Assets measured on a recurring basis:
Assets Measured on a Recurring Basis	29,391	38,323
Mortgage-backed Securities, Issued by Private Enterprises [Member] | Fair Value, Inputs, Level 2 [Member]
Assets measured on a recurring basis:
Assets Measured on a Recurring Basis	2,919	3,693
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Assets measured on a recurring basis:
Assets Measured on a Recurring Basis	2,919	3,693
Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Assets measured on a recurring basis:
Assets Measured on a Recurring Basis	153,551	156,393
Debt Securities [Member]
Assets measured on a recurring basis:
Assets Measured on a Recurring Basis	153,551	156,393
Equity Securities in Financial Institutions [Member] | Fair Value, Inputs, Level 1 [Member]
Assets measured on a recurring basis:
Assets Measured on a Recurring Basis	33	5
Equity Securities in Financial Institutions [Member] | Fair Value, Inputs, Level 2 [Member]
Assets measured on a recurring basis:
Assets Measured on a Recurring Basis	750	745
Equity Securities in Financial Institutions [Member]
Assets measured on a recurring basis:
Assets Measured on a Recurring Basis	783	750
Fair Value, Inputs, Level 1 [Member]
Assets measured on a recurring basis:
Assets Measured on a Recurring Basis	33	5
Fair Value, Inputs, Level 2 [Member]
Assets measured on a recurring basis:
Assets Measured on a Recurring Basis	$154,301	$157,138

Note_17_Fair_Value_Disclosure_3

Note 17 - Fair Value Disclosure Measurements (Details) - Assets Measured on a Nonrecurring Basis (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Assets measured on a non-recurring basis:
Impaired loans	$14,368	$18,965
Fair Value, Inputs, Level 3 [Member]
Assets measured on a non-recurring basis:
Impaired loans	12,772	17,158
Other real estate owned	2,590	2,698
Estimate of Fair Value Measurement [Member]
Assets measured on a non-recurring basis:
Impaired loans	12,772	17,158
Other real estate owned	$2,590	$2,698

Note_17_Fair_Value_Disclosure_4

Note 17 - Fair Value Disclosure Measurements (Details) - Additional Quantitative Information About Assets Measured at Fair Value on Non-recurring Basis (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013
Appraisal Adjustments [Member] | Impaired Loans [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range	0.00%	[1]
Appraisal Adjustments [Member] | Impaired Loans [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range	-84.60%	[1]
Appraisal Adjustments [Member] | Impaired Loans [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range	-25.50%
Appraisal Adjustments [Member] | Impaired Loans [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Estimate (in Dollars)	$12,772		$17,158
Valuation Techniques/Unobservable Input	Appraisal of collateral (1)	[2]
Appraisal Adjustments [Member] | Other Real Estate Owned [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range	0.00%	[1]
Appraisal Adjustments [Member] | Other Real Estate Owned [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range	-10.00%	[1]
Appraisal Adjustments [Member] | Other Real Estate Owned [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range	-7.50%
Appraisal Adjustments [Member] | Other Real Estate Owned [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Estimate (in Dollars)	$2,590		$2,698
Valuation Techniques/Unobservable Input	Appraisal of collateral (1), (3)	[2],[3]
Liquidation Expenses [Member] | Impaired Loans [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range	0.00%	[1]
Liquidation Expenses [Member] | Impaired Loans [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range	-100.00%	[1]
Liquidation Expenses [Member] | Impaired Loans [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range	-25.90%
[1]	Appraisals may be adjusted by management for qualitative factors such as economic conditions and estimated liquidation expenses. The range and weighted average of liquidation expenses and other appraisal adjustments are presented as a percent of the appraisal.
[2]	Fair value is generally determined through independent appraisals of the underlying collateral, which generally include various level 3 inputs which are not identifiable.
[3]	Includes qualitative adjustments by management and estimated liquidation expenses.

Note_17_Fair_Value_Disclosure_5

Note 17 - Fair Value Disclosure Measurements (Details) - Estimated Fair Value of the Companybs Financial Instruments (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Financial assets:
Cash and cash equivalents	$25,639	$26,193	$45,346	$34,390
Cash and cash equivalents	25,639	26,193
Investment securities Available for sale	154,334	157,143
Loans held for sale	438
Loans held for sale	438
Net loans	463,738	428,679
Net loans	475,019	430,502
Bank-owned life insurance	9,092	8,816
Federal Home Loan Bank stock	1,887	1,887
Accrued interest receivable	2,095	2,135
Financial liabilities:
Deposits	586,112	568,836
Deposits	586,796	570,276
Short-term borrowings	14,808	10,809
Short-term borrowings	14,808	10,809
Other borrowings	10,624	11,609
Other borrowings	10,822	11,787
Accrued interest payable	315	364
Fair Value, Inputs, Level 1 [Member]
Financial assets:
Cash and cash equivalents	25,639	26,193
Bank-owned life insurance	9,092	8,816
Federal Home Loan Bank stock	1,887	1,887
Accrued interest receivable	2,095	2,135
Financial liabilities:
Deposits	416,254	394,422
Short-term borrowings	14,808	10,809
Accrued interest payable	315	364
Fair Value, Inputs, Level 2 [Member]
Financial assets:
Investment securities Available for sale	154,334	157,143
Loans held for sale	438
Fair Value, Inputs, Level 3 [Member]
Financial assets:
Net loans	475,019	430,502
Financial liabilities:
Deposits	170,542	175,854
Other borrowings	$10,822	$11,787

Note_18_Accumulated_Other_Comp2

Note 18 - Accumulated Other Comprehensive Income (Loss) (Details) - Changes in Accumulated Other Comprehensive Income (Loss) by Component Net of Tax (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Changes in Accumulated Other Comprehensive Income (Loss) by Component Net of Tax [Abstract]
Balance	($2,237)	[1]	$5,391	[1]
Period change	4,785	[1]	-7,628	[1]	850
Other comprehensive income (loss) before reclassification	4,949	[1]	-7,620	[1]
Amount reclassified from accumulated other comprehensive income (loss)	-164	[1]	-8	[1]
Balance	$2,548	[1]	($2,237)	[1]	$5,391	[1]
[1]	All amounts are net of tax. Amounts in parentheses indicate debits.

Note_18_Accumulated_Other_Comp3

Note 18 - Accumulated Other Comprehensive Income (Loss) (Details) - Significant Amounts Reclassified Out of Each Component of Accumulated Other Comprehensive Income (Loss) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013
Unrealized gains (losses) on available-for-sale securities
Investment securities gains, net	($248)	[1]	($11)	[1]
Income taxes	84	[1]	3	[1]
Net of tax	($164)	[1]	($8)	[1]
[1]	Amounts in parentheses indicate debits to net income

Note_19_Parent_Company_Details

Note 19 - Parent Company (Details) - Condensed Balance Sheet (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
ASSETS
Cash and due from banks	$20,846	$20,926
Investment securities available for sale	154,334	157,143
Other assets	9,635	11,716
TOTAL ASSETS	677,531	647,090
LIABILITIES
Short-term borrowings	14,808	10,809
TOTAL LIABILITIES	613,664	593,617
STOCKHOLDERS' EQUITY	63,867	53,473	55,437	47,253
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	677,531	647,090
Non-Bank Subsidiary [Member] | Parent Company [Member]
ASSETS
Investment in subsidiaries	2,534	2,560
Subsidiary Banks [Member] | Parent Company [Member]
ASSETS
Investment in subsidiaries	69,514	59,951
Parent Company [Member]
ASSETS
Cash and due from banks	466	797
Investment securities available for sale	783	750
Other assets	1,981	1,615
TOTAL ASSETS	75,278	65,673
LIABILITIES
Trust preferred securities	8,248	8,248
Short-term borrowings	3,136	3,895
Other liabilities	27	57
TOTAL LIABILITIES	11,411	12,200
STOCKHOLDERS' EQUITY	63,867	53,473
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$75,278	$65,673

Note_19_Parent_Company_Details1

Note 19 - Parent Company (Details) - Condensed Statement of Income and Comprehensive Income (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
INCOME
Total income									$27,874	$28,178	$28,746
EXPENSES
Interest expense	1,005	999	1,033	1,033	1,136	1,328	1,357	1,429	4,070	5,250	6,447
Income before income tax benefit	2,438	2,447	2,025	2,262	2,321	2,386	2,161	2,139	9,172	9,007	7,943
Income tax benefit	550	529	414	499	500	521	476	482	1,992	1,979	1,662
NET INCOME	1,888	1,918	1,611	1,763	1,821	1,865	1,685	1,657	7,180	7,028	6,281
Comprehensive Income (Loss)									11,965	-600	7,131
Parent Company [Member]
INCOME
Dividends from subsidiary bank									3,142	2,198	2,327
Other									8	5	8
Total income									3,150	2,203	2,335
EXPENSES
Interest expense									304	361	417
Other									816	475	594
Total expenses									1,120	836	1,011
Income before income tax benefit									2,030	1,367	1,324
Income tax benefit									-378	-283	-342
Income before equity in undistributed net income of subsidiaries									2,408	1,650	1,666
Equity in undistributed net income of subsidiaries									4,772	5,378	4,615
NET INCOME									7,180	7,028	6,281
Comprehensive Income (Loss)									$11,965	($600)	$7,131

Note_19_Parent_Company_Details2

Note 19 - Parent Company (Details) - Condensed Statement of Cash Flows (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
OPERATING ACTIVITIES
Net income	$7,180	$7,028	$6,281
Adjustments to reconcile net income to net cash provided by operating activities:
Stock-based compensation expense	10		32
Other	708	-364	-355
Net cash provided by operating activities	7,459	9,897	10,282
FINANCING ACTIVITIES
Net decrease in short-term borrowings	3,999	4,271	-854
Common stock issued		74	2,329
Cash dividends	2,121	2,097	2,002
Net cash (used for) provided by financing activities	18,709	-22,953	8,679
(Decrease) increase in cash	-554	-19,153	10,956
Cash	25,639	26,193	45,346
Beginning of Year [Member] | Parent Company [Member]
FINANCING ACTIVITIES
Cash	797	1,740	710
End of Year [Member] | Parent Company [Member]
FINANCING ACTIVITIES
Cash	466	797	1,740
Middlefield Banking Company [Member] | Parent Company [Member]
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in undistributed net income	-4,798	-4,884	-4,655
Emerald Bank [Member] | Parent Company [Member]
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in undistributed net income		-598	-240
EMORECO [Member] | Parent Company [Member]
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in undistributed net income	26	104	280
Parent Company [Member]
OPERATING ACTIVITIES
Net income	7,180	7,028	6,281
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in undistributed net income	4,772	5,378	4,615
Stock-based compensation expense	10		32
Other	-409	-253	-885
Net cash provided by operating activities	2,009	1,397	813
FINANCING ACTIVITIES
Net decrease in short-term borrowings	-759	-976	-804
Common stock issued		74	2,329
Stock options exercised	-50	-77
Proceeds from dividend reinvestment plan	590	736	694
Cash dividends	-2,121	-2,097	-2,002
Net cash (used for) provided by financing activities	-2,340	-2,340	217
(Decrease) increase in cash	($331)	($943)	$1,030

Note_20_Selected_Quarterly_Fin2

Note 20 - Selected Quarterly Financial Data (Unaudited) (Details) - Selected Quarterly Financial Data (Unaudited) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Selected Quarterly Financial Data (Unaudited) [Abstract]
Total interest income	$7,055	$6,911	$6,919	$6,989	$7,043	$7,174	$6,947	$7,014
Total interest expense	1,005	999	1,033	1,033	1,136	1,328	1,357	1,429	4,070	5,250	6,447
Net interest income	6,050	5,912	5,886	5,956	5,907	5,846	5,590	5,585	23,804	22,928	22,299
Provision for loan losses		70	120	180	-570	153	300	313	370	196	2,168
Net interest income after provision for loan losses	6,050	5,842	5,766	5,776	6,477	5,693	5,290	5,272	23,434	22,732	20,131
Total noninterest income	1,026	990	857	715	650	808	819	868	3,588	3,145	3,451
Total noninterest expense	4,638	4,385	4,598	4,229	4,806	4,115	3,948	4,001	17,850	16,870	15,639
Income before income taxes	2,438	2,447	2,025	2,262	2,321	2,386	2,161	2,139	9,172	9,007	7,943
Income taxes	550	529	414	499	500	521	476	482	1,992	1,979	1,662
Net income	$1,888	$1,918	$1,611	$1,763	$1,821	$1,865	$1,685	$1,657	$7,180	$7,028	$6,281
Net income
Basic (in Dollars per share)	$0.92	$0.94	$0.79	$0.87	$0.90	$0.92	$0.82	$0.84	$3.52	$3.48	$3.29
Diluted (in Dollars per share)	$0.92	$0.93	$0.79	$0.86	$0.90	$0.92	$0.82	$0.83	$3.50	$3.47	$3.28
Average shares outstanding:
Basic (in Shares)	2,049,536	2,044,124	2,038,026	2,033,480	2,027,680	2,022,490	2,017,264	1,999,645	2,041,635	2,016,862	1,911,960
Diluted (in Shares)	2,059,561	2,052,012	2,044,564	2,039,515	2,032,611	2,029,420	2,023,961	2,010,292	2,049,506	2,024,040	1,916,932