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Debt (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 27, 2017 | Mar. 31, 2019 | Mar. 31, 2018 | Dec. 31, 2018
Short-term Debt [Line Items] |  |  |  |  |
Number of share issued |  |  | 640,163 |  |
Common stock, par value |  | $ 0.01 |  |  | $ 0.01
Exchange price |  |  | $ 1.46 |  |
Amortization of debt issuance costs |  | $ 7 | $ 3 | [1] |
Energy One [Member] | Credit Facility [Member] |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |
Outstanding amount of credit facility |  |  |  |  | $ 937
Line of credit facility, maturity date |  | Jul. 30, 2019 |  |  |
Interest expense |  | $ 20 | 36 |  |
Amortization of debt issuance costs |  | $ 7 | $ 3 |  |
Weighted average interest rate credit facility |  | 8.75% | 8.75% |  |
Line of credit facility, description |  | 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% |  |  |
[1] | The condensed consolidated statement of cash flows for the three months ended March 31, 2018 was restated to include the loss due to the change in the fair value of marketable equity securities of $78 thousand in net loss. The amount was originally included in other comprehensive loss.

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