Oil and Gas Exploration and Production Industries Disclosures (Details 4) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Sales	$ 4,995,000	$ 5,688,000	$ 4,515,000
Production costs	2,103,000	1,920,000	1,698,000
Exploration costs	0	0	0
Accretion expense	38,000	45,000	35,000
Depletion, depreciation, amortization and valuation allowance	887,000	1,486,000	1,819,000
Results of Operations, Income before Income Taxes	1,967,000	2,237,000	963,000
Income tax (benefit) provision	240,000	113,000	(163,000)
Results of operations from production activities	$ 1,727,000	$ 2,124,000	$ 1,126,000