PROPERTY AND EQUIPMENT - Schedule of property and equipment (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Jun. 30, 2015
Property And Equipment [Abstract]
Equipment and furniture	$ 126,437	$ 107,098
Leasehold improvements	92,103	79,508
Property and equipment, at cost	218,540	186,606
Less accumulated depreciation and amortization	(137,178)	(122,917)
Total property and equipment, net	$ 81,362	$ 63,689