CASH AND CASH EQUIVALENTS - Schedule of cash and cash equivalents (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Cash And Cash Equivalents [Abstract]
Cash	$ 45,117	$ 31,768
Money market funds	3,965	3,596
Total cash and cash equivalents	$ 49,082	$ 35,364	$ 64,461	$ 64,337