Supplemental Information on Oil & Natural Gas Exploration and Production Activities (unaudited) (Details 3) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Discounted Future Net Cash Flows
Future cash inflows	$ 15,850	$ 148,640	$ 1,076,880
Future production costs	(12,490)	(90,140)	(324,970)
Future net cash flows	3,360	58,500	751,910
Effect of discounting net cash flows at 10%	(60)	(3,190)	(96,690)
Discounted future net cash flows	3,300	55,310	655,220
Changes in the standardized measure of discounted future net cash flows relating to proved crude oil and natural gas reserves
Standardized measure at beginning of period	55,310	655,220	2,097,800
Net change in sales price, net of production costs	(20,131)	(254,621)	171,135
Revisions of quantity estimates	(7,797)	(150,827)	(28,147)
Changes in production timing rates	(5,323)	(83,093)	(92,615)
Accretion of discount	5,531	65,522	209,780
Sales net of production costs	(23,120)	(176,891)	(795,462)
Sales of minerals in place	(1,170)		(907,271)
Net increase (decrease)	(52,010)	(599,910)	(1,442,580)
Standardized measure at end of year	$ 3,300	$ 55,310	$ 655,220