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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

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