PROPERTY AND EQUIPMENT - Schedule of Property and Equipment (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Jun. 30, 2017
Property Plant And Equipment [Abstract]
Equipment and furniture	$ 152,682	$ 138,742
Leasehold improvements	109,849	94,643
Property and equipment, at cost	262,531	233,385
Less accumulated depreciation and amortization	(161,391)	(141,636)
Total property and equipment, net	$ 101,140	$ 91,749