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OTHER INVESTMENTS, NET (Details Textual) - USD ($)
12 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Other Investment [Line Items]    
Unrealized Gain Loss On Other Investments And Derivative Instruments $ (204,000) $ 181,000
Other Investments, Total 15,082,000 15,837,000
Comstock Mining, Inc [Member]    
Other Investment [Line Items]    
Other Investments, Total $ 13,231,000  
Preferred Stock, Shares Outstanding 13,231  
Warrant [Member]    
Other Investment [Line Items]    
Available-for-sale Debt Securities, Amortized Cost Basis $ 420,000  
Available-for-sale Securities 104,000 207,000
Unrealized Gain Loss On Other Investments And Derivative Instruments $ 103,000 $ 181,000