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(6) Equity Investment in Savoy (Details) - Savoy: Oil and Gas Reserves 3 (USD $) | 12 Months Ended
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Dec. 31, 2013
Savoy: Oil and Gas Reserves 3 [Abstract] |
Beginning of year | $ 35,300,000
End of year | 90,820,000
Average wellhead prices: |
Oil (per Bbl) | 94.66
NGLs (per Bbl) | 42.45
Natgas (per Mcf) | 3.04
Sales, net of production costs | (12,640,000)
Net changes in prices and production costs | 1,600,000
Extensions and discoveries | 57,200,000
Revisions of previous quantity estimates | 2,100,000
Change in production timing and other | 3,700,000
Accretion of discount | $ 3,560,000

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