Quarterly report pursuant to Section 13 or 15(d)

Sale of Amadeus Basin Assets (Details)

v3.3.1.900
Sale of Amadeus Basin Assets (Details)
$ in Thousands
 6 Months Ended
Dec. 29, 2015
USD ($)
Mar. 31, 2014
AUD
shares
Dec. 31, 2015
USD ($)
AUD / Gigajoule
Dec. 31, 2014
USD ($)
Dec. 31, 2015
AUD
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Amount paid in exchange for assets | $ $ 175   $ 175 $ 0  
Central Petroleum Limited          
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Ownership percentage   11.00%     5.70%
Amadeus Basin          
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Amount paid in exchange for assets   AUD 20,000,000      
Customary purchase price adjustments   AUD 800,000      
Discount rate     10.00%    
Amadeus Basin | Maximum          
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Bonus discharge amount         AUD 7,000,000
Amadeus Basin | Palm Valley          
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Royalty rate     25.00%    
AUD/Gigajoule gas price trigger for first ten years | AUD / Gigajoule     5.00    
AUD/Gigajoule gas price trigger for following five years | AUD / Gigajoule     6.00    
Royalty rate term, first 10 years     10 years    
Royalty rate term, following 5 years     5 years    
Amadeus Basin | Central Petroleum Limited          
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Shares issued during period for acquisitions | shares   39,500,000.0