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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.