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CASH AND CASH EQUIVALENTS - Schedule of cash and cash equivalents (Details) - USD ($)
$ in Thousands
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2012
Cash And Cash Equivalents [Abstract]        
Cash $ 31,768 $ 62,560    
Money market funds 3,596 1,901    
Total cash and cash equivalents $ 35,364 $ 64,461 $ 64,337 $ 15,740