Annual report pursuant to Section 13 and 15(d)

Income Taxes - Additional Information (Details)

v3.3.0.814
Income Taxes - Additional Information (Details) - USD ($)
12 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Valuation Allowance [Line Items]    
Decrease in valuation allowance $ 1,500,000  
Deferred tax asset, net of tax liability related to basis difference in foreign subsidiaries 8,600,000  
Basis difference in foreign subsidiaries 10,900,000  
Income tax expense 0 $ 0
Uncertain tax positions 0 $ 0
Amadeus Basin    
Valuation Allowance [Line Items]    
Deferred income taxes (7,200,000)  
Federal    
Valuation Allowance [Line Items]    
Tax deduction from compensation expense $ 252,000