MARKETABLE SECURITIES (Schedule of Available-for-sale Marketable Securities) (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Jun. 30, 2015
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	$ 19,837	$ 20,156
Gross unrealized gain	1,464	2,255
Gross unrealized loss	(533)	(161)
Fair value	20,768	22,250
Within One Year [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	14,282	13,531
Gross unrealized gain	1,364	2,110
Gross unrealized loss	(531)	(134)
Fair value	15,115	15,507
One to Five Years [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	5,248	6,469
Gross unrealized gain	87	137
Gross unrealized loss	(2)	(26)
Fair value	5,333	6,580
After Five Years through Ten Years [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	307	156
Gross unrealized gain	$ 13	8
Gross unrealized loss		(1)
Fair value	$ 320	163
Stock and Index Linked Notes [Member] | Within One Year [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	12,186	12,305
Gross unrealized gain	1,334	2,083
Gross unrealized loss	(531)	(72)
Fair value	12,989	14,316
Government Debentures [Member] | Within One Year [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	1,371	287
Gross unrealized gain	$ 19	1
Gross unrealized loss		(10)
Fair value	$ 1,390	278
Government Debentures [Member] | One to Five Years [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	455	2,033
Gross unrealized gain	$ 9	40
Gross unrealized loss		(9)
Fair value	$ 464	2,064
Government Debentures [Member] | After Five Years through Ten Years [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	266
Gross unrealized gain	$ 11
Gross unrealized loss
Fair value	$ 277
Corporate Debentures [Member] | Within One Year [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	725	939
Gross unrealized gain	$ 11	26
Gross unrealized loss		(52)
Fair value	$ 736	913
Corporate Debentures [Member] | One to Five Years [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	4,793	4,436
Gross unrealized gain	78	97
Gross unrealized loss	(2)	(17)
Fair value	4,869	4,516
Corporate Debentures [Member] | After Five Years through Ten Years [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	41	156
Gross unrealized gain	$ 2	8
Gross unrealized loss		(1)
Fair value	$ 43	$ 163