Description Of Business And Significant Accounting Policies (Narrative) (Details)	12 Months Ended
	Dec. 31, 2018 USD ($) customer	Dec. 31, 2017 USD ($)	Sep. 30, 2018 USD ($)
Description Of Business And Significant Accounting Policies [Line Items]
Material natural gas imbalances	$ 0	$ 0
Unevaluated properties	$ 23,000	0
Current cost discount	10.00%
Stock based compensation	$ 23,000	14,000
Federal net operating loss carryforwards	35,600,000
Deferred tax asset	$ 130,000	242,000
Customers | customer	2
Write-off for accounts receivable-related party, allowance for doubtful accounts	$ 159,000
Impairment	0	0
Accounts receivable - noncurrent	130,000	242,000
Accounts receivable	533,000	$ 517,000
Increased accounts receivable, current	8,000
Increased accounts receivable, noncurrent	$ 9,000
Customer A [Member] | Revenue [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Customer's percentage of revenue	85.60%	84.60%
Customer B [Member] | Revenue [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Customer's percentage of revenue	13.80%
Customer C [Member] | Revenue [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Customer's percentage of revenue		14.80%
Two Customers [Member] | Accounts Receivable [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Customer's percentage of revenue	93.20%	89.70%
Customer D [Member] | Accounts Receivable [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Customer's percentage of revenue	84.40%	74.40%
Restatement Adjustment [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Accounts receivable			$ 121,000