DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Details 1) (Designated as Hedging Instrument [Member], Foreign Exchange Contract [Member], Cash Flow Hedging [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended
	Oct. 31, 2014		Oct. 31, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Earnings (Effective Portion)	$ 1,651	[1]	$ (821)	[1]
Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Earnings (Effective Portion)	560	[1]	(1)	[1]
Cost of Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Earnings (Effective Portion)	1,091	[1]	(820)	[1]
Other Comprehensive Income (Loss) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in OCI on Derivatives (Effective Portion)	$ 591		$ 1,821

[1] There were no gains or losses recognized in earnings related to the ineffective portion of the hedging relationship or related to the amount excluded from the assessment of hedge effectiveness for the three months ended October 31, 2014 and October 31, 2013.