Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation (Details)

v3.5.0.2
Basis of Presentation (Details)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2016
Jul. 10, 2015
May 17, 2013
Sep. 30, 2016
USD ($)
segment
$ / shares
shares
Sep. 30, 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   0.125          
Common stock, par value (in dollars per share) | $ / shares       $ 0.01   $ 0.01      
Schedule of Equity Method Investments [Line Items]                  
Number of operating segments | segment       2          
Net loss from operations       $ 2,194 $ 1,801        
Net cash used in operating activities       (1,926) (557)        
Cash and cash equivalents       $ 892 $ 576 $ 1,680   $ 769  
Shares issued upon conversion | shares       1          
Number of reportable segments | segment       2   2      
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       1.90%         11.00%
UK Oil and Gas Investments PLC                  
Schedule of Equity Method Investments [Line Items]                  
Ownership percentage       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