Disclosures About Capitalized Costs, Costs Incurred (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Company
Revenue
Oil and gas revenues	$ 190	$ 2,019	$ 5,984
Expenses
Production costs	147	5,283	5,673
Depletion and amortization	69	42	2,376
Exploration	0	0	0
Abandoned and impaired properties	0	0	0
Results of operations of oil and gas producing activities	(26)	(3,306)	(2,065)
Company's Share of Laramie Energy
Revenue
Oil and gas revenues	43,607	14,217	26,829
Expenses
Production costs	27,750	11,047	11,225
Depletion and amortization	17,534	8,226	10,921
Abandoned and impaired properties	0	3,977	0
Results of operations of oil and gas producing activities	(1,677)	(9,033)	4,683
Total results of operations of oil and gas producing activities	$ (1,703)	$ (12,339)	$ 2,618