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Debt (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands |  | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Dec. 27, 2017 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018 | Dec. 31, 2018
Short-term Debt [Line Items] |  |  |  |  |
Number of share issued |  |  |  | 930,857 |
Common stock, par value |  |  | $ 0.01 |  | $ 0.01
Amortization of debt issuance costs |  |  | $ 7 | $ 7 |
Energy One [Member] | Credit Facility [Member] |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |
Outstanding amount of credit facility |  |  |  |  | $ 937
Line of credit facility, expiration date |  |  | Jul. 30, 2019 |  |
Interest expense |  | $ 23 | $ 20 | 59 |
Amortization of debt issuance costs |  | $ 7 | $ 7 | $ 7 |
Weighted average interest rate |  | 8.75% | 8.75% | 8.75% |
Line of credit facility, description |  |  | The Proved Developed Producing Coverage Ratio to be less than 1.2 to 1; and (ii) the current ratio to be less than 1.0 to 1.0. |  |
Exchange Agreement [Member] | Energy One and APEG Energy II, L.P. [Member] |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |
Outstanding amount of credit facility | $ 4,500 |  |  |  |
Number of share issued | 5,819,270 |  |  |  |
Common stock, par value | $ 0.01 |  |  |  |
Exchange price | $ 0.767 |  |  |  |
Volume weighted average price percentage | 1.30% |  |  |  |
Outstanding common stock, percentage |  |  | 43.00% |  |

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