Description Of Business And Significant Accounting Policies (Narrative) (Details)		12 Months Ended
	Mar. 21, 2016	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Description Of Business And Significant Accounting Policies [Line Items]
Material natural gas imbalances		$ 0	$ 0
Methane gas revenue		0	0	$ 0
Impairment of equipment and materials inventory		88,000
Unevaluated properties		$ 106,000	552,000
Current cost discount		10.00%
Allowance for doubtful accounts		$ 14,000	14,000
Compensation expense		17,000	12,000	$ 32,000
Federal net operating loss carryforwards		26,400,000
Deferred tax asset		$ 0	$ 0
Reverse stock split	0.1
Customer A [Member] | Revenue [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Customer's percentage of revenue		73.90%	74.50%	79.30%
Customer B [Member] | Revenue [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Customer's percentage of revenue		13.10%	16.10%	16.50%
Customer C [Member] | Revenue [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Customer's percentage of revenue		12.00%	8.60%	3.80%
Two Customers [Member] | Accounts Receivable [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Customer's percentage of revenue		84.10%	75.70%
Customer D [Member] | Accounts Receivable [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Customer's percentage of revenue		71.00%	66.50%
Minimum [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Federal net operating loss carryforwards expiration between, years		Dec. 31, 2019
Maximum [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Federal net operating loss carryforwards expiration between, years		Dec. 31, 2036
Stock Options [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Compensation expense		$ 3,000	$ 12,000	$ 32,000