Long-Term Debt (Narrative) (Details) (USD $) In Millions, unless otherwise specified					0 Months Ended
	Dec. 31, 2013 Maximum [Member]	Dec. 31, 2013 Minimum [Member]	Dec. 31, 2013 F&M Bank [Member]	Dec. 31, 2012 F&M Bank [Member]	Mar. 17, 2014 F&M Bank [Member] Subsequent Event [Member]	Mar. 16, 2014 F&M Bank [Member] Subsequent Event [Member]	Oct. 24, 2013 F&M Bank [Member] Subsequent Event [Member]
Line of Credit Facility [Line Items]
Credit facility current borrowing capacity							$ 40
Maximum line of credit			40
Borrowing base			17.5			17.5
Decreased borrowing base					14.3
Interest rate per annum	8.25%	5.50%	3.75%
Variable interest rate			0.50%		0.50%
Loans and letters of credit amount outstanding			$ 3.3	$ 10.1