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INCOME TAXES (Details 3) - USD ($)
$ in Thousands
Jun. 30, 2017
Jun. 30, 2016
Deferred tax assets    
Mineral interest $ 10,232 $ 6,555
Net operating losses available for future periods 4,230 3,951
Other 216 144
Total deferred tax assets 14,678 10,650
Valuation allowance (14,678) (10,650)
Net deferred tax assets