Condensed Financial Statements Of Parent Company (Condensed Statements Of Cash Flows Of Parent Company) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Cash flows from operating activities
Net Income	$ 2,132	$ 600
Adjustments to Reconcile Net Income To Net Cash Used In Operating Activities
Decrease (increase) in income taxes receivable	51	(374)
(Increase) in other assets	393	1,122
Increase (decrease) in other liabilities	(224)	315
Net cash provided by operating activities	5,049	7,124
Cash flows from financing activities
Proceeds from exercise of stock option	54	72
Payoff of 6% capital notes due 4/1/2012	(7,000)
Proceeds from issuance of 6% capital notes due 4/1/2017	10,000
Net cash provided by financing activities	11,456	6,965
Increase (decrease) in cash and cash equivalents	17,658	4,581
Cash and cash equivalents at beginning of period	23,340	18,759
Cash and cash equivalents at end of period	40,998	23,340
Parent Company [Member]
Cash flows from operating activities
Net Income	2,132	600
Adjustments to Reconcile Net Income To Net Cash Used In Operating Activities
Decrease (increase) in income taxes receivable	67	(7)
(Increase) in other assets	(35)
Increase (decrease) in other liabilities	(75)	34
Net cash provided by operating activities	(522)	(440)
Cash flows from financing activities
Proceeds from exercise of stock option	54	72
Payoff of 6% capital notes due 4/1/2012	(7,000)
Proceeds from issuance of 6% capital notes due 4/1/2017	10,000
Net cash provided by financing activities	3,054	72
Increase (decrease) in cash and cash equivalents	2,532	(368)
Cash and cash equivalents at beginning of period	229	597
Cash and cash equivalents at end of period	2,761	229
Bank Of The James [Member] | Parent Company [Member]
Adjustments to Reconcile Net Income To Net Cash Used In Operating Activities
Equity in undistributed net income (loss) of subsidiaries	(2,611)	(1,346)
BOTJ Investment Group Inc [Member] | Parent Company [Member]
Adjustments to Reconcile Net Income To Net Cash Used In Operating Activities
Equity in undistributed net income (loss) of subsidiaries		$ 279