CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statement of Comprehensive Income [Abstract]
Net income	$ 6,163	$ 7,990	$ 4,662
Other comprehensive income (loss), net of tax:
Unrealized holding gains (losses) arising during the period, net of tax of $3,212, $1,511, and $2,826, respectively	(6,234)	2,932	5,485
Reclassification adjustment for gains included in net income, net of tax of $142, $151,and $156, respectively	(276)	(294)	(304)
Unrealized losses on securities for which other-than-temporary impairment has been recognized in earnings, net of tax of $0, $0, and $9, respectively	0	0	16
Unrealized gain (loss) on interest rate swap, net of tax of $142, $50, and $213, respectively	275	(97)	(413)
Change in benefit obligation and plan assets for defined benefit plan, net of tax of $0, $0, and $80, respectively	0	0	154
Total other comprehensive income (loss)	(6,235)	2,541	4,938
Total comprehensive income (loss)	(72)	10,531	9,600
Comprehensive loss (income) attributable to non-controlling interest	(9)	(1,504)	298
Comprehensive income (loss) attributable to Middleburg Financial Corporation	$ (81)	$ 9,027	$ 9,898