Long-Term Debt (Narrative) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2013 F&M Bank [Member]	Dec. 31, 2012 F&M Bank [Member]	Jun. 30, 2013 Maximum [Member]	Mar. 04, 2013 Maximum [Member] F&M Bank [Member]	Jun. 30, 2013 Minimum [Member]	Mar. 04, 2013 Minimum [Member] F&M Bank [Member]
Line of Credit Facility [Line Items]
Credit facility maximum borrowing capacity		$ 40
Credit facility current borrowing capacity	20.5
Interest rate per annum		5.25%		8.25%		5.50%	5.25%
Rate above prime					0.25%
Loans and letters of credit amount outstanding		$ 6.5	$ 10.1