Condensed Financial Information - Parent Corporation Only STATEMENTS OF CASH FLOWS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash Flows from Operating Activities
Net income	$ 7,830	$ 7,584	$ 6,154
Adjustments to reconcile net income to net cash provided by operating activities:
Share-based compensation	605	426	492
Decrease (increase) in other assets	(5,482)	(3,266)	293
Increase in other liabilities	448	2,447	1,746
Net cash provided by operating activities	12,303	48,789	67,091
Cash Flows from Investing Activities
Net cash used in investing activities	(93,337)	(44,693)	(42,969)
Cash Flows from Financing Activities
Net proceeds from issuance of common stock	0	394	39
Cash dividends paid on common stock	(3,292)	(2,419)	(1,700)
Net cash provided by (used in) provided by financing activities	65,240	(16,417)	(11,194)
Increase (decrease) in cash and cash equivalents	(15,794)	(12,321)	12,928
Cash and cash equivalents at beginning of year	55,022	67,343	54,415
Cash and cash equivalents at end of year	39,228	55,022	67,343
Middleburg Financial Corporation [Member]
Cash Flows from Operating Activities
Net income	7,830	7,584	6,154
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in undistributed earnings of subsidiaries	(3,767)	(5,138)	(4,511)
Share-based compensation	605	426	492
Decrease (increase) in other assets	957	(1,099)	(87)
Increase in other liabilities	13	213	2
Net cash provided by operating activities	5,638	1,986	2,050
Cash Flows from Investing Activities
Proceeds from sales, calls and maturities of available for sale securities	0	44	0
Net cash used in investing activities	0	44	0
Cash Flows from Financing Activities
Net proceeds from issuance of common stock	0	394	39
Cash dividends paid on common stock	(3,292)	(2,419)	(1,700)
Repurchase of stock	(1,506)	(88)	(103)
Net cash provided by (used in) provided by financing activities	(4,798)	(2,113)	(1,764)
Increase (decrease) in cash and cash equivalents	840	(83)	286
Cash and cash equivalents at beginning of year	563	646	360
Cash and cash equivalents at end of year	$ 1,403	$ 563	$ 646