General	9 Months Ended
Sep. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
General	General In the opinion of management, the accompanying unaudited financial statements contain all adjustments (consisting of only normal recurring accruals) necessary to present fairly the financial position at September 30, 2016 and December 31, 2015, the results of operations and comprehensive income, for the three and nine month periods ending September 30, 2016 and September 30, 2015 and changes in shareholders' equity and cash flows for the nine months ended September 30, 2016 and September 30, 2015, in accordance with accounting principles generally accepted in the United States of America ("U.S. GAAP"). The statements should be read in conjunction with the Notes to Consolidated Financial Statements included in the Annual Report on Form 10-K for the year ended December 31, 2015 (the “2015 Form 10-K”) of Middleburg Financial Corporation (the “Company”). The results of operations for the three and nine months ended September 30, 2016 are not necessarily indicative of the results to be expected for the full year. On October 24, 2016, the Company and Access National Corporation (“Access”) announced a definitive agreement to combine in a strategic merger (the “Merger Agreement”) pursuant to which the Company will merge with and into Access (the “Merger”). As a result of the Merger, the holders of shares of the Company's common stock will receive 1.3314 shares of Access common stock for each share of the Company's common stock held immediately prior to the effective date of the Merger. The transaction is expected to be completed in the second quarter of 2017, subject to approval of both companies' shareholders, regulatory approvals and other customary closing conditions. In preparing these financial statements, management has evaluated all other subsequent events and transactions for potential recognition or disclosure through the date these financial statements were issued. Management has concluded there were no additional material subsequent events to be disclosed. Certain amounts in the 2015 consolidated financial statements have been reclassified to conform to the 2016 presentation. No reclassifications were significant and there was no effect on net income.

General

In the opinion of management, the accompanying unaudited financial statements contain all adjustments (consisting of only normal recurring accruals) necessary to present fairly the financial position at September 30, 2016 and December 31, 2015, the results of operations and comprehensive income, for the three and nine month periods ending September 30, 2016 and September 30, 2015 and changes in shareholders' equity and cash flows for the nine months ended September 30, 2016 and September 30, 2015, in accordance with accounting principles generally accepted in the United States of America ("U.S. GAAP"). The statements should be read in conjunction with the Notes to Consolidated Financial Statements included in the Annual Report on Form 10-K for the year ended December 31, 2015 (the “2015 Form 10-K”) of Middleburg Financial Corporation (the “Company”). The results of operations for the three and nine months ended September 30, 2016 are not necessarily indicative of the results to be expected for the full year.

On October 24, 2016, the Company and Access National Corporation (“Access”) announced a definitive agreement to combine in a strategic merger (the “Merger Agreement”) pursuant to which the Company will merge with and into Access (the “Merger”). As a result of the Merger, the holders of shares of the Company's common stock will receive 1.3314 shares of Access common stock for each share of the Company's common stock held immediately prior to the effective date of the Merger. The transaction is expected to be completed in the second quarter of 2017, subject to approval of both companies' shareholders, regulatory approvals and other customary closing conditions.

In preparing these financial statements, management has evaluated all other subsequent events and transactions for potential recognition or disclosure through the date these financial statements were issued. Management has concluded there were no additional material subsequent events to be disclosed.

Certain amounts in the 2015 consolidated financial statements have been reclassified to conform to the 2016 presentation. No reclassifications were significant and there was no effect on net income.