FAIR VALUE MEASUREMENTS (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Jun. 30, 2015
Money Market Mutual Funds [Member]
FAIR VALUE MEASUREMENTS [Line Items]
Fair value of assets	$ 32,193
Derivative Instruments Asset [Member]
FAIR VALUE MEASUREMENTS [Line Items]
Fair value of assets	90	$ 859
Short-term marketable corporate bonds [Member]
FAIR VALUE MEASUREMENTS [Line Items]
Fair value of assets	27,137
Long-term marketable corporate bonds [Member]
FAIR VALUE MEASUREMENTS [Line Items]
Fair value of assets	25,290
Level 1 [Member] | Money Market Mutual Funds [Member]
FAIR VALUE MEASUREMENTS [Line Items]
Fair value of assets	$ 32,193
Level 1 [Member] | Derivative Instruments Asset [Member]
FAIR VALUE MEASUREMENTS [Line Items]
Fair value of assets
Level 1 [Member] | Short-term marketable corporate bonds [Member]
FAIR VALUE MEASUREMENTS [Line Items]
Fair value of assets
Level 1 [Member] | Long-term marketable corporate bonds [Member]
FAIR VALUE MEASUREMENTS [Line Items]
Fair value of assets
Level 2 [Member] | Money Market Mutual Funds [Member]
FAIR VALUE MEASUREMENTS [Line Items]
Fair value of assets
Level 2 [Member] | Derivative Instruments Asset [Member]
FAIR VALUE MEASUREMENTS [Line Items]
Fair value of assets	$ 90	$ 859
Level 2 [Member] | Short-term marketable corporate bonds [Member]
FAIR VALUE MEASUREMENTS [Line Items]
Fair value of assets	27,137
Level 2 [Member] | Long-term marketable corporate bonds [Member]
FAIR VALUE MEASUREMENTS [Line Items]
Fair value of assets	$ 25,290
Level 3 [Member] | Money Market Mutual Funds [Member]
FAIR VALUE MEASUREMENTS [Line Items]
Fair value of assets
Level 3 [Member] | Derivative Instruments Asset [Member]
FAIR VALUE MEASUREMENTS [Line Items]
Fair value of assets
Level 3 [Member] | Short-term marketable corporate bonds [Member]
FAIR VALUE MEASUREMENTS [Line Items]
Fair value of assets
Level 3 [Member] | Long-term marketable corporate bonds [Member]
FAIR VALUE MEASUREMENTS [Line Items]
Fair value of assets