Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation (Details)

v3.3.1.900
Basis of Presentation (Details)
$ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Dec. 31, 2015
USD ($)
shares
Dec. 31, 2014
USD ($)
Dec. 31, 2015
USD ($)
segment
shares
Dec. 31, 2014
USD ($)
Jun. 30, 2015
USD ($)
segment
Jun. 30, 2014
USD ($)
Mar. 31, 2014
Schedule of Equity Method Investments [Line Items]              
Number of operating segments | segment     3        
Net loss from operations $ 1,508 $ 2,888 $ 4,267 $ 5,578      
Working capital (658)   (658)   $ 3,900    
Cash and cash equivalents $ 429 $ 7,405 $ 429 $ 7,405 $ 1,051 $ 16,422  
Number of reportable segments | segment     3   3    
Shares issued upon conversion | shares 1   1        
Other long term assets $ (1,010)   $ (1,010)   $ (1,045)    
Utah CO2 LLC              
Schedule of Equity Method Investments [Line Items]              
Majority interest percentage         51.00%    
Central Petroleum Limited              
Schedule of Equity Method Investments [Line Items]              
Ownership percentage 5.70%   5.70%       11.00%
Two separate third parties | Utah CO2 LLC              
Schedule of Equity Method Investments [Line Items]              
Ownership percentage         49.00%    
Third party owner | Utah CO2 LLC              
Schedule of Equity Method Investments [Line Items]              
Ownership percentage         10.00%    
Adjustments for New Accounting Principle, Early Adoption              
Schedule of Equity Method Investments [Line Items]              
Other long term assets $ 65   $ 65        
Notes payable $ 65   $ 65