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COMMITMENTS AND CONTINGENCIES - Minimum Future Rental Payments (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Mar. 31, 2017
Mar. 31, 2016
Jun. 30, 2016
Jun. 30, 2015
Operating Leases            
2017         $ 392  
2018 $ 399   $ 399   399  
2019 406   406   406  
2020 309   309   309  
Total minimum payments required 1,491   1,491   1,506  
Rent expense $ 300 $ 100 $ 500 $ 300 $ 400 $ 300