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Long-Term Debt (Schedule of Long-term Debt Instruments) (Details) (USD $) In Thousands, unless otherwise specified | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2012 | Dec. 31, 2011 | Jun. 30, 2012 F&M Bank [Member] | Jun. 30, 2012 Maximum [Member] | Mar. 14, 2012 Maximum [Member] F&M Bank [Member] | Jun. 30, 2012 Minimum [Member]
Line of Credit Facility [Line Items] |  |  |  |  |  |
Note payable to financial institution, with interest only payment until maturity | $ 13,940 | $ 11,531 |  |  |  |
Installment notes bearing interest at the rate of 5.5% to 8.25% per annum collateralized by vehicles with monthly payments including interest, insurance and maintenance of approximately $20,000 | 315 | 266 |  |  |  |
Total long-term debt | 14,255 | 11,797 |  |  |  |
Less current maturities | (131) | (103) |  |  |  |
Long-term debt, less current maturities | 14,124 | 11,694 |  |  |  |
Interest rate per annum |  |  | 5.25% | 8.25% | 5.25% | 5.50%
Debt Instrument, Periodic Payments Including Insurance And Maintenance | $ 20,000 |  |  |  |  |

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