Disclosure About Oil and Gas Producing Activities (Unaudited) (Details) Mcf in Thousands	12 Months Ended
	Dec. 31, 2015 bbl Mcf	Dec. 31, 2014 bbl Mcf	Dec. 31, 2013 bbl Mcf
Oil Reserves [Member]
Increase (Decrease) in Proved Developed and Undeveloped Reserves [Roll Forward]
Reserves, Beginning Balance	67,766,000	34,119,000	18,137,000
Extensions, discoveries and additions	166,000	34,275,000	11,329,000
Sales		0
Acquisitions		9,381,000	10,114,000
Production	(3,533,000)	(3,409,000)	(1,196,000)
Revisions	(42,224,000)	(6,600,000)	(4,265,000)
Reserves, Ending Balance	22,175,000	67,766,000	34,119,000
Natural Gas Reserves [Member]
Increase (Decrease) in Proved Developed and Undeveloped Reserves [Roll Forward]
Reserves, Beginning Balance | Mcf	4,831,194	3,409,742	2,966,445
Extensions, discoveries and additions | Mcf	17,415	866,513	1,409,528
Sales | Mcf		(239,290)
Acquisitions | Mcf		1,345,964	0
Production | Mcf	(268,954)	(228,517)	(224,912)
Revisions | Mcf	(2,243,375)	(323,218)	(741,319)
Reserves, Ending Balance | Mcf	2,336,280	4,831,194	3,409,742
Natural Gas Liquids Reserves [Member]
Increase (Decrease) in Proved Developed and Undeveloped Reserves [Roll Forward]
Reserves, Beginning Balance	21,993,000	0	0
Extensions, discoveries and additions	3,000	210,000	0
Sales		0
Acquisitions		21,740,000	0
Production	0	0	0
Revisions	(12,156,000)	43,000	0
Reserves, Ending Balance	9,840,000	21,993,000	0