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FAIR VALUE OF FINANCIAL INSTRUMENTS - Changes in fair value of the Company level 3 financial instruments (unaudited) (Details 1) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance $ (978) $ (585)
Increase due to change in fair value of warrant liabilities (5,674) (393)
Reduction due to warrant exercises 2,913
Ending balance $ (3,739) $ (978)