Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation (Details)

v3.6.0.2
Basis of Presentation (Details)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Mar. 31, 2016
Jul. 10, 2015
Dec. 31, 2016
USD ($)
$ / shares
shares
Dec. 31, 2015
USD ($)
Dec. 31, 2016
USD ($)
segment
$ / shares
shares
Dec. 31, 2015
USD ($)
Jun. 30, 2016
USD ($)
segment
$ / shares
Aug. 02, 2016
$ / shares
Jun. 30, 2015
USD ($)
Mar. 31, 2014
Related Party Transaction [Line Items]                    
Reverse stock split   0.125                
Common stock, par value (in dollars per share) | $ / shares     $ 0.01   $ 0.01   $ 0.01      
Schedule of Equity Method Investments [Line Items]                    
Number of operating segments | segment         2   2      
Net loss from operations     $ 666 $ 1,166 $ 2,860 $ 2,967        
Net cash used in operating activities         (2,805) (1,449)        
Cash and cash equivalents     $ 507 $ 343 $ 507 $ 343 $ 1,680   $ 769  
Shares issued upon conversion (in shares) | shares     1   1          
Series A Preferred Stock                    
Related Party Transaction [Line Items]                    
Reverse stock split   9.77586545                
Percent of shares transferred 100.00%                  
One Stone Exchange Agreement                    
Related Party Transaction [Line Items]                    
Asset impairment charges             $ 11,300      
One Stone | One Stone Exchange Agreement | Nautilus Poplar, LLC (NP)                    
Related Party Transaction [Line Items]                    
Ownership percentage, sold in period 100.00%                  
One Stone | One Stone Exchange Agreement | Utah CO2 LLC                    
Related Party Transaction [Line Items]                    
Ownership percentage, sold in period 51.00%                  
One Stone | One Stone Exchange Agreement | Series A Preferred Stock                    
Related Party Transaction [Line Items]                    
Percent of shares transferred 100.00%                  
Central Petroleum Limited                    
Schedule of Equity Method Investments [Line Items]                    
Ownership percentage     0.90%   0.90%         11.00%
UK Oil and Gas Investments PLC                    
Schedule of Equity Method Investments [Line Items]                    
Ownership percentage     2.00%   2.00%          
Merger Agreement                    
Related Party Transaction [Line Items]                    
Exchange of shares, conversion ratio               1.300    
Merger Agreement | Tellurian                    
Related Party Transaction [Line Items]                    
Common stock, par value (in dollars per share) | $ / shares               $ 0.001    
Merger Agreement | Magellan Petroleum UK (MPUK)                    
Related Party Transaction [Line Items]                    
Common stock, par value (in dollars per share) | $ / shares               $ 0.01