Employee Benefit Plans	12 Months Ended
Dec. 31, 2016
Compensation and Retirement Disclosure [Abstract]
Employee Benefit Plans	Employee Benefit Plans 401(k) Plan The Company has a 401(k) plan whereby a majority of employees participate in the plan. Employees may contribute up to 100% of their compensation subject to certain limits based on federal tax laws. The Company makes matching contributions equal to 50% of the first 6% of an employee’s compensation contributed to the plan. Matching contributions vest to the employee equally over a five year period. For the years ended December 31, 2016, 2015, and 2014, expense attributable to the plan amounted to $364,000, $351,000 and $340,000, respectively. Money Purchase Pension Plan (MPPP) The Middleburg Financial Corporation Defined Benefit Pension Plan was replaced by a Money Purchase Pension Plan effective on January 1, 2010. Employees who have attained age 21 and completed one year of service are eligible to participate in the plan as of the first day of the month following the completion of such eligibility provisions. Employees earn a year of service if they complete one thousand hours of service in a plan year. Service with Middleburg Financial Corporation and its subsidiaries prior to the effective date of the Plan counts toward a participant's initial eligibility to participate in the plan. Each year, a participant receives an allocation of an employer contribution equal to 3.00% of total compensation (up to the statutory maximum) plus an additional contribution of 2.75% of compensation in excess of the Social Security taxable wage base (up to the statutory maximum). To receive an allocation, the participant must complete one thousand hours of service in the plan year and be employed on the last day of the plan year. The requirement to be employed on the last day of the plan year does not apply if a participant dies, retires, or becomes disabled during the plan year. Participants become vested in their employer contributions according to a schedule which allows for graduated vesting and full vesting after five years of service. Service with Middleburg Financial Corporation and its subsidiaries prior to the effective date of the Plan count toward a participant's vested percentage. Assets are held in a pooled investment account managed by Middleburg Trust Company, a wholly owned subsidiary of the Company. Distributions may be made upon termination of employment, death or disability. The plan is administered by the Benefits Committee of the Company. The plan may be amended from time to time by the Board or its delegate and may be terminated by the Board at any time for any reason. For the years ended December 31, 2016, 2015, and 2014 expense attributable to the plan was $545,000, $926,000, and $898,000, respectively. Deferred Compensation Plans The Company has adopted several deferred compensation plans; including a defined benefit SERP, an elective deferral plan for the former Chairman, and a defined contribution SERP for certain executive officers. The two plans for the former Chairman made installment payouts in 2016, 2015 and 2014. The defined contribution SERP for executive officers includes a vesting schedule, and is currently credited at a rate using the 10-year treasury plus 1.5%. The deferred compensation expense for 2016, 2015, and 2014, was $245,000, $226,000, and $222,000, respectively. The plans are unfunded; however, life insurance has been acquired on the life of the executive officers in amounts sufficient to help meet the costs of the obligations.

Employee Benefit Plans

401(k) Plan

The Company has a 401(k) plan whereby a majority of employees participate in the plan. Employees may contribute up to 100% of their compensation subject to certain limits based on federal tax laws. The Company makes matching contributions equal to 50% of the first 6% of an employee’s compensation contributed to the plan. Matching contributions vest to the employee equally over a five year period. For the years ended December 31, 2016, 2015, and 2014, expense attributable to the plan amounted to $364,000, $351,000 and $340,000, respectively.

Money Purchase Pension Plan (MPPP)

The Middleburg Financial Corporation Defined Benefit Pension Plan was replaced by a Money Purchase Pension Plan effective on January 1, 2010. Employees who have attained age 21 and completed one year of service are eligible to participate in the plan as of the first day of the month following the completion of such eligibility provisions. Employees earn a year of service if they complete one thousand hours of service in a plan year. Service with Middleburg Financial Corporation and its subsidiaries prior to the effective date of the Plan counts toward a participant's initial eligibility to participate in the plan.

Each year, a participant receives an allocation of an employer contribution equal to 3.00% of total compensation (up to the statutory maximum) plus an additional contribution of 2.75% of compensation in excess of the Social Security taxable wage base (up to the statutory maximum). To receive an allocation, the participant must complete one thousand hours of service in the plan year and be employed on the last day of the plan year. The requirement to be employed on the last day of the plan year does not apply if a participant dies, retires, or becomes disabled during the plan year.

Participants become vested in their employer contributions according to a schedule which allows for graduated vesting and full vesting after five years of service. Service with Middleburg Financial Corporation and its subsidiaries prior to the effective date of the Plan count toward a participant's vested percentage.

Assets are held in a pooled investment account managed by Middleburg Trust Company, a wholly owned subsidiary of the Company. Distributions may be made upon termination of employment, death or disability.

The plan is administered by the Benefits Committee of the Company. The plan may be amended from time to time by the Board or its delegate and may be terminated by the Board at any time for any reason.

For the years ended December 31, 2016, 2015, and 2014 expense attributable to the plan was $545,000, $926,000, and $898,000, respectively.

Deferred Compensation Plans

The Company has adopted several deferred compensation plans; including a defined benefit SERP, an elective deferral plan for the former Chairman, and a defined contribution SERP for certain executive officers. The two plans for the former Chairman made installment payouts in 2016, 2015 and 2014. The defined contribution SERP for executive officers includes a vesting schedule, and is currently credited at a rate using the 10-year treasury plus 1.5%. The deferred compensation expense for 2016, 2015, and 2014, was $245,000, $226,000, and $222,000, respectively. The plans are unfunded; however, life insurance has been acquired on the life of the executive officers in amounts sufficient to help meet the costs of the obligations.