Annual report pursuant to Section 13 and 15(d)

Discontinued Operations (Details)

v3.5.0.2
Discontinued Operations (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Apr. 15, 2016
Mar. 31, 2016
Sep. 17, 2014
Mar. 31, 2016
Jun. 30, 2016
Jun. 30, 2015
Sep. 30, 2011
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]              
Impairment of proved oil and gas properties           $ 17,400  
Impairment of goodwill           $ 674  
Long-term debt         $ 783    
Basis spread on variable rate 1.00%            
Revolving Credit Facility              
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]              
Line of credit facility, borrowing limit     $ 8,000        
Long-term debt     $ 5,500        
Prime Rate | Revolving Credit Facility              
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]              
Interest rate     3.25%        
Term Loan | Prime Rate | Revolving Credit Facility              
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]              
Interest rate     4.75%   3.50%    
Term Loan | Prime Rate | Line of Credit              
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]              
Basis spread on variable rate     1.50%        
One Stone Exchange Agreement              
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]              
Asset impairment charges   $ 11,300     $ 11,300    
Impairment of proved oil and gas properties   $ 7,800   $ 7,800      
One Stone Exchange Agreement | Utah CO2 LLC              
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]              
Majority interest percentage         51.00%    
Series A Preferred Stock              
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]              
Percent of shares transferred   100.00%          
Nautilus Poplar, LLC (NP)              
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]              
Ownership percentage, sold in period   100.00%          
Nautilus Poplar, LLC (NP) | One Stone Exchange Agreement              
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]              
Ownership percentage, sold in period   100.00%          
Nautilus Purchase and Sale Agreement (PSA) [Member]              
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]              
Contingent consideration, maximum possible value             $ 5,000