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Note 1 - Basis of Presentation
3 Months Ended
Mar. 31, 2013
Significant Accounting Policies [Text Block]
NOTE 1 - BASIS OF PRESENTATION

The consolidated financial statements of Middlefield Banc Corp. ("Company") include its two bank subsidiaries The Middlefield Banking Company (“MB”) and Emerald Bank (“EB”) and a non-bank asset resolution subsidiary EMORECO, Inc. All significant inter-company items have been eliminated.

The accompanying financial statements have been prepared in accordance with U.S. generally accepted accounting principles and the instructions for Form 10-Q and Article 10 of Regulation S-X.  In management’s opinion, the financial statements include all adjustments, consisting of normal recurring adjustments, that the Company considers necessary to fairly state the Company’s financial position and the results of operations and cash flows.  The consolidated balance sheet at December 31, 2012, has been derived from the audited financial statements at that date but does not include all of the necessary informational disclosures and footnotes as required by U. S. generally accepted accounting principles.  The accompanying financial statements should be read in conjunction with the financial statements and notes thereto included with the Company’s Form 10-K for the year ended December 31, 2012 (File No. 000-32561). The results of the Company’s operations for any interim period are not necessarily indicative of the results of the Company’s operations for any other interim period or for a full fiscal year.

Recent Accounting Pronouncements

In December 2011, the FASB issued ASU 2011-11, Balance Sheet (Topic 210):  Disclosures about Offsetting Assets and Liabilities.  The amendments in this Update affect all entities that have financial instruments and derivative instruments that are either (1) offset in accordance with either  Section 210-20-45 or  Section 815-10-45 or (2) subject to an enforceable master netting arrangement or similar agreement.  The requirements amend the disclosure requirements on offsetting in Section 210-20-50.  This information will enable users of an entity's financial statements to evaluate the effect or potential effect of netting arrangements on an entity's financial position, including the effect or potential effect of rights of setoff associated with certain financial instruments and derivative instruments in the scope of this Update.  An entity is required to apply the amendments for annual reporting periods beginning on or after January 1, 2013, and interim periods within those annual periods.  An entity should provide the disclosures required by those amendments retrospectively for all comparative periods presented.  This ASU did not have a significant impact on the Company’s financial statements.

In January 2013, the FASB issued ASU 2013-01, Balance Sheet (Topic 210): Clarifying the Scope of Disclosures about Offsetting Assets and Liabilities.   The amendments clarify that the scope of Update 2011-11 applies to derivatives accounted for in accordance with Topic 815, Derivatives and Hedging, including bifurcated embedded derivatives, repurchase agreements and reverse repurchase agreements, and securities borrowing and securities lending transactions that are either offset in accordance with Section 210-20-45 or Section 815-10-45 or subject to an enforceable master netting arrangement or similar agreement.  An entity is required to apply the amendments for fiscal years beginning on or after January 1, 2013, and interim periods within those annual periods. An entity should provide the required disclosures retrospectively for all comparative periods presented.  The effective date is the same as the effective date of Update 2011-11.  This ASU did not have a significant impact on the Company’s financial statements.

In February 2013, the FASB issued ASU 2013-02, Comprehensive Income (Topic 220):  Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income.   The amendments in this Update require an entity to report the effect of significant reclassifications out of accumulated other comprehensive income on the respective line items in net income if the amount being reclassified is required under U.S. generally accepted accounting principles (GAAP) to be reclassified in its entirety to net income.  For other amounts that are not required under U.S. GAAP to be reclassified in their entirety to net income in the same reporting period, an entity is required to cross-reference other disclosures required under U.S. GAAP that provide additional detail about those amounts.  For public entities, the amendments are effective prospectively for reporting periods beginning after December 15, 2012. For nonpublic entities, the amendments are effective prospectively for reporting periods beginning after December 15, 2013. Early adoption is permitted.  The Company has provided the necessary disclosures in Note 5.

In February 2013, the FASB issued ASU 2013-04, Liabilities (Topic 405): Obligations Resulting from Joint and Several Liability Arrangements for Which the Total Amount of the Obligation Is Fixed at the Reporting Date.  The objective of the amendments in this Update is to provide guidance for the recognition, measurement, and disclosure of obligations resulting from joint and several liability arrangements for which the total amount of the obligation within the scope of this guidance is fixed at the reporting date, except for obligations addressed within existing guidance in U.S. generally accepted accounting principles (GAAP). Examples of obligations within the scope of this Update include debt arrangements, other contractual obligations, and settled litigation and judicial rulings. U.S. GAAP does not include specific guidance on accounting for such obligations with joint and several liability, which has resulted in diversity in practice. Some entities record the entire amount under the joint and several liability arrangement on the basis of the concept of a liability and the guidance that must be met to extinguish a liability. Other entities record less than the total amount of the obligation, such as an amount allocated, an amount corresponding to the proceeds received, or the portion of the amount the entity agreed to pay among its co-obligors, on the basis of the guidance for contingent liabilities. The amendments in this Update are effective for fiscal years, and interim periods within those years, beginning after December 15, 2013. For nonpublic entities, the amendments are effective for fiscal years ending after December 15, 2014, and interim periods and annual periods thereafter.  This ASU is not expected to have a significant impact on the Company’s financial statements.