INVESTMENTS - Summary of Gross Unrealized Losses and Fair Values of Available-For-Sale Investment Securities (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Jun. 30, 2014
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Available-for-sale securities, continuous unrealized loss position, less than 12 months, fair value	$ 1,187	$ 1,776
Available-for-sale securities, continuous unrealized loss position, 12 months or greater, fair value	190	0
Available-for-sale securities, continuous unrealized loss position, fair value, total	1,377	1,776
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Available-for-sale securities, continuous unrealized loss position, less than 12 months, gross unrealized loss	(1,023)	(80)
Available-for-sale securities, continuous unrealized loss position, 12 months or longer, gross unrealized loss	(27)	0
Available-for-sale securities, continuous unrealized loss position, gross unrealized losses, total	(1,050)	(80)
Common stock - Domestic
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Available-for-sale securities, continuous unrealized loss position, less than 12 months, fair value	45	125
Available-for-sale securities, continuous unrealized loss position, 12 months or greater, fair value	98	0
Available-for-sale securities, continuous unrealized loss position, fair value, total	143	125
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
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 longer, gross unrealized loss	(10)	0
Available-for-sale securities, continuous unrealized loss position, gross unrealized losses, total	(13)	(3)
Common stock - International
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Available-for-sale securities, continuous unrealized loss position, less than 12 months, fair value	75
Available-for-sale securities, continuous unrealized loss position, 12 months or greater, fair value	42
Available-for-sale securities, continuous unrealized loss position, fair value, total	117
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Available-for-sale securities, continuous unrealized loss position, less than 12 months, gross unrealized loss	(18)
Available-for-sale securities, continuous unrealized loss position, 12 months or longer, gross unrealized loss	(14)
Available-for-sale securities, continuous unrealized loss position, gross unrealized losses, total	(32)
Corporate debt
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Available-for-sale securities, continuous unrealized loss position, less than 12 months, fair value	425	1,382
Available-for-sale securities, continuous unrealized loss position, 12 months or greater, fair value	0	0
Available-for-sale securities, continuous unrealized loss position, fair value, total	425	1,382
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Available-for-sale securities, continuous unrealized loss position, less than 12 months, gross unrealized loss	(912)	(74)
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, gross unrealized losses, total	(912)	(74)
Mutual funds - Fixed income
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Available-for-sale securities, continuous unrealized loss position, less than 12 months, fair value	166	151
Available-for-sale securities, continuous unrealized loss position, 12 months or greater, fair value	50	0
Available-for-sale securities, continuous unrealized loss position, fair value, total	216	151
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Available-for-sale securities, continuous unrealized loss position, less than 12 months, gross unrealized loss	(10)	(2)
Available-for-sale securities, continuous unrealized loss position, 12 months or longer, gross unrealized loss	(3)	0
Available-for-sale securities, continuous unrealized loss position, gross unrealized losses, total	(13)	(2)
Mutual funds - Domestic equity
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Available-for-sale securities, continuous unrealized loss position, less than 12 months, fair value	467
Available-for-sale securities, continuous unrealized loss position, 12 months or greater, fair value	0
Available-for-sale securities, continuous unrealized loss position, fair value, total	467
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Available-for-sale securities, continuous unrealized loss position, less than 12 months, gross unrealized loss	(75)
Available-for-sale securities, continuous unrealized loss position, 12 months or longer, gross unrealized loss	0
Available-for-sale securities, continuous unrealized loss position, gross unrealized losses, total	(75)
Other
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Available-for-sale securities, continuous unrealized loss position, less than 12 months, fair value	9	118
Available-for-sale securities, continuous unrealized loss position, 12 months or greater, fair value	0	0
Available-for-sale securities, continuous unrealized loss position, fair value, total	9	118
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Available-for-sale securities, continuous unrealized loss position, less than 12 months, gross unrealized loss	(5)	(1)
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, gross unrealized losses, total	$ (5)	$ (1)