Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events (Details)

v3.3.1.900
Subsequent Events (Details)
AUD / shares in Units, $ / shares in Units, AUD in Thousands, shares in Millions
 1 Months Ended 6 Months Ended
Jan. 15, 2016
USD ($)
Sep. 17, 2015
USD ($)
Feb. 08, 2016
USD ($)
$ / AUD
shares
Feb. 08, 2016
AUD
shares
Dec. 31, 2015
USD ($)
$ / shares
Dec. 31, 2014
USD ($)
Feb. 08, 2016
AUD / shares
Jun. 30, 2015
$ / shares
Subsequent Event [Line Items]                
Proceeds from sale of Central shares         $ 1,443,000 $ 0    
Current share price (AUD per share) | $ / shares         $ 0.01     $ 0.01
Note Payable | Premium Finance Agreement                
Subsequent Event [Line Items]                
Principal amount   $ 108,000            
Interest rate   6.50%            
Principal payment   $ 12,000            
Note Payable | Premium Finance Agreement | Subsequent Event                
Subsequent Event [Line Items]                
Principal amount $ 42,000              
Interest rate 6.25%              
Principal payment $ 5,000              
Central Petroleum Limited | Subsequent Event                
Subsequent Event [Line Items]                
Shares of Central sold | shares     3.0 3.0        
Investment owned, number of shares | shares     20.9          
Current share price (AUD per share) | AUD / shares             AUD 0.105  
Foreign exchange rate | $ / AUD     0.71          
Potential liquidity     $ 1,600,000          
Central Petroleum Limited | Amadeus Basin | Subsequent Event                
Subsequent Event [Line Items]                
Proceeds from sale of Central shares     $ 251,000 AUD 353