INVESTMENTS (Details) - Summary of Gross Unrealized Losses and Fiar Value of Available-for-Sale Investments - USD ($) $ in Thousands	Sep. 30, 2016	Jun. 30, 2016
Available-for-sale securities
Available-for-sale securities, continuous unrealized loss position, less than 12 months, fair value	$ 387	$ 247
Available-for-sale securities, continuous unrealized loss position, less than 12 months, gross unrealized loss	(7)	(60)
Available-for-sale securities, continuous unrealized loss position, 12 months or greater, fair value	199	224
Available-for-sale securities, continuous unrealized loss position, 12 months or greater, gross unrealized loss	(9)	(46)
Available-for-sale securities, continuous unrealized loss position, fair value, total	586	471
Available-for-sale securities, continuous unrealized loss position, gross unrealized losses, total	(16)	(106)
Common Stock - Domestic [Member]
Available-for-sale securities
Available-for-sale securities, continuous unrealized loss position, less than 12 months, fair value	0	0
Available-for-sale securities, continuous unrealized loss position, less than 12 months, gross unrealized loss	0	0
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 greater, gross unrealized loss	0	0
Available-for-sale securities, continuous unrealized loss position, fair value, total	0	0
Available-for-sale securities, continuous unrealized loss position, gross unrealized losses, total	0	0
Common Stock - International [Member]
Available-for-sale securities
Available-for-sale securities, continuous unrealized loss position, less than 12 months, fair value	0	246
Available-for-sale securities, continuous unrealized loss position, less than 12 months, gross unrealized loss	0	(60)
Available-for-sale securities, continuous unrealized loss position, 12 months or greater, fair value	35	23
Available-for-sale securities, continuous unrealized loss position, 12 months or greater, gross unrealized loss	(1)	(23)
Available-for-sale securities, continuous unrealized loss position, fair value, total	35	269
Available-for-sale securities, continuous unrealized loss position, gross unrealized losses, total	(1)	(83)
Corporate Debt Securities [Member]
Available-for-sale securities
Available-for-sale securities, continuous unrealized loss position, less than 12 months, fair value	0	0
Available-for-sale securities, continuous unrealized loss position, less than 12 months, gross unrealized loss	0	0
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 greater, gross unrealized loss	0	0
Available-for-sale securities, continuous unrealized loss position, fair value, total	0	0
Available-for-sale securities, continuous unrealized loss position, gross unrealized losses, total	0	0
Fixed Income Securities [Member]
Available-for-sale securities
Available-for-sale securities, continuous unrealized loss position, less than 12 months, fair value	0	1
Available-for-sale securities, continuous unrealized loss position, less than 12 months, gross unrealized loss	0	0
Available-for-sale securities, continuous unrealized loss position, 12 months or greater, fair value	164	201
Available-for-sale securities, continuous unrealized loss position, 12 months or greater, gross unrealized loss	(8)	(23)
Available-for-sale securities, continuous unrealized loss position, fair value, total	164	202
Available-for-sale securities, continuous unrealized loss position, gross unrealized losses, total	(8)	(23)
Mutual Funds, Domestic Equity [Member]
Available-for-sale securities
Available-for-sale securities, continuous unrealized loss position, less than 12 months, fair value	387	0
Available-for-sale securities, continuous unrealized loss position, less than 12 months, gross unrealized loss	(7)	0
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 greater, gross unrealized loss	0	0
Available-for-sale securities, continuous unrealized loss position, fair value, total	387	0
Available-for-sale securities, continuous unrealized loss position, gross unrealized losses, total	(7)	0
Other Securities [Member]
Available-for-sale securities
Available-for-sale securities, continuous unrealized loss position, less than 12 months, fair value	0	0
Available-for-sale securities, continuous unrealized loss position, less than 12 months, gross unrealized loss	0	0
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 greater, gross unrealized loss	0	0
Available-for-sale securities, continuous unrealized loss position, fair value, total	0	0
Available-for-sale securities, continuous unrealized loss position, gross unrealized losses, total	$ 0	$ 0