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Description Of Business And Significant Accounting Policies (Narrative) (Details) |  | 12 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 21, 2016 | Dec. 31, 2015 USD ($) mi | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($) | Mar. 01, 2013 USD ($) | Dec. 31, 2012 USD ($)
Description Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |
Length of pipeline, miles | mi |  | 65 |  |  |  |
Certificate of Deposit to cover future asset retirement obligations |  |  |  |  |  | $ 386,000
Unevaluated properties |  | $ 552,000 | $ 462,000 |  |  |
Current cost discount |  | 10.00% |  |  |  |
Allowance for doubtful accounts |  | $ 14,000 | 14,000 |  |  |
Compensation expense |  | 12,000 | 32,000 | $ 50,000 |  |
Reversal of compensation expense |  | 59,500 |  |  |  |
Federal net operating loss carryforwards |  | $ 22,900,000 |  |  |  |
Deferred tax asset |  |  | 7,351,000 |  |  |
Deferred tax asset allowance recorded |  |  | $ 7,350,000 |  |  |
Sale price of Swan Creek and Pipeline assets |  |  |  |  | $ 1,500,000 |
Customer A [Member] | Revenue [Member] |  |  |  |  |  |
Description Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |
Customer's percentage of revenue |  | 74.50% | 79.30% | 79.80% |  |
Customer B [Member] | Revenue [Member] |  |  |  |  |  |
Description Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |
Customer's percentage of revenue |  | 16.10% | 16.50% | 14.90% |  |
Customer C [Member] | Revenue [Member] |  |  |  |  |  |
Description Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |
Customer's percentage of revenue |  | 8.60% | 3.80% | 1.70% |  |
Two Customers [Member] | Accounts Receivable [Member] |  |  |  |  |  |
Description Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |
Customer's percentage of revenue |  | 75.70% | 84.50% |  |  |
Customer D [Member] | Accounts Receivable [Member] |  |  |  |  |  |
Description Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |
Customer's percentage of revenue |  | 66.50% | 67.80% |  |  |
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, 2032 |  |  |  |
Subsequent Event [Member] |  |  |  |  |  |
Description Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |
Reverse stock split | 0.1 |  |  |  |  |
Stock Options [Member] |  |  |  |  |  |
Description Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |
Compensation expense |  | $ 12,000 | $ 32,000 | $ (28,000) |  |

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