INVESTMENTS - Summary of Gross Unrealized Losses and Fair Values of Available-For-Sale Investment Securities (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Jun. 30, 2014
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, continuous unrealized loss position, less than 12 months, fair value	$ 1,695	$ 1,776
Available-for-sale securities, continuous unrealized loss position, less than 12 months, gross unrealized loss	(313)	(80)
Available-for-sale securities, continuous unrealized loss position, 12 months or greater, fair value	0	0
Available-for-sale securities, continuous unrealized loss position, 12 months or longer, gross unrealized loss	0	0
Available-for-sale securities, continuous unrealized loss position, fair value, total	1,695	1,776
Available-for-sale securities, continuous unrealized loss position, gross unrealized losses, total	(313)	(80)
Common stock - Domestic
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, continuous unrealized loss position, less than 12 months, fair value	106	125
Available-for-sale securities, continuous unrealized loss position, less than 12 months, gross unrealized loss	(3)	(3)
Available-for-sale securities, continuous unrealized loss position, 12 months or greater, fair value	0	0
Available-for-sale securities, continuous unrealized loss position, 12 months or longer, gross unrealized loss	0	0
Available-for-sale securities, continuous unrealized loss position, fair value, total	106	125
Available-for-sale securities, continuous unrealized loss position, gross unrealized losses, total	(3)	(3)
Common stock - International
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, continuous unrealized loss position, less than 12 months, fair value	140
Available-for-sale securities, continuous unrealized loss position, less than 12 months, gross unrealized loss	(8)
Available-for-sale securities, continuous unrealized loss position, 12 months or greater, fair value	0
Available-for-sale securities, continuous unrealized loss position, 12 months or longer, gross unrealized loss	0
Available-for-sale securities, continuous unrealized loss position, fair value, total	140
Available-for-sale securities, continuous unrealized loss position, gross unrealized losses, total	(8)
Corporate debt
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, continuous unrealized loss position, less than 12 months, fair value	1,168	1,382
Available-for-sale securities, continuous unrealized loss position, less than 12 months, gross unrealized loss	(287)	(74)
Available-for-sale securities, continuous unrealized loss position, 12 months or greater, fair value	0	0
Available-for-sale securities, continuous unrealized loss position, 12 months or longer, gross unrealized loss	0	0
Available-for-sale securities, continuous unrealized loss position, fair value, total	1,168	1,382
Available-for-sale securities, continuous unrealized loss position, gross unrealized losses, total	(287)	(74)
Mutual funds - Fixed income
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, continuous unrealized loss position, less than 12 months, fair value	218	151
Available-for-sale securities, continuous unrealized loss position, less than 12 months, gross unrealized loss	(11)	(2)
Available-for-sale securities, continuous unrealized loss position, 12 months or greater, fair value	0	0
Available-for-sale securities, continuous unrealized loss position, 12 months or longer, gross unrealized loss	0	0
Available-for-sale securities, continuous unrealized loss position, fair value, total	218	151
Available-for-sale securities, continuous unrealized loss position, gross unrealized losses, total	(11)	(2)
Other
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, continuous unrealized loss position, less than 12 months, fair value	63	118
Available-for-sale securities, continuous unrealized loss position, less than 12 months, gross unrealized loss	(4)	(1)
Available-for-sale securities, continuous unrealized loss position, 12 months or greater, fair value	0	0
Available-for-sale securities, continuous unrealized loss position, 12 months or longer, gross unrealized loss	0	0
Available-for-sale securities, continuous unrealized loss position, fair value, total	63	118
Available-for-sale securities, continuous unrealized loss position, gross unrealized losses, total	$ (4)	$ (1)