FAIR VALUE MEASUREMENTS (Details) (USD $) In Thousands, unless otherwise specified	Oct. 31, 2014	Jul. 31, 2014
Available-for-sale securities:
Securities	$ 67,847	$ 69,839
Trading Securities [Abstract]
Trading Securities	796	819
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Trading Securities [Abstract]
Trading Securities	796	819
Derivative financial instruments:
Foreign exchange forward contracts	4,835	5,931
Derivative financial instruments:
Foreign exchange forward contracts	1,751	1,726
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Equity Securities [Member]
Available-for-sale securities:
Securities	3,942	4,748
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Corporate Debt Securities [Member]
Available-for-sale securities:
Securities	29,611	30,243
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | U.S. Treasury [Member]
Available-for-sale securities:
Securities	9,689	9,724
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Federal Agency [Member]
Available-for-sale securities:
Securities	12,719	13,719
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Mortgage-backed [Member]
Available-for-sale securities:
Securities	11,886	11,405
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Trading Securities [Abstract]
Trading Securities	796	819
Derivative financial instruments:
Foreign exchange forward contracts	0	0
Derivative financial instruments:
Foreign exchange forward contracts	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Equity Securities [Member]
Available-for-sale securities:
Securities	3,942	4,748
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Corporate Debt Securities [Member]
Available-for-sale securities:
Securities	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | U.S. Treasury [Member]
Available-for-sale securities:
Securities	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Federal Agency [Member]
Available-for-sale securities:
Securities	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Mortgage-backed [Member]
Available-for-sale securities:
Securities	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Trading Securities [Abstract]
Trading Securities	0	0
Derivative financial instruments:
Foreign exchange forward contracts	4,835	5,931
Derivative financial instruments:
Foreign exchange forward contracts	1,751	1,726
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Equity Securities [Member]
Available-for-sale securities:
Securities	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Corporate Debt Securities [Member]
Available-for-sale securities:
Securities	29,611	30,243
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | U.S. Treasury [Member]
Available-for-sale securities:
Securities	9,689	9,724
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Federal Agency [Member]
Available-for-sale securities:
Securities	12,719	13,719
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Mortgage-backed [Member]
Available-for-sale securities:
Securities	11,886	11,405
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Trading Securities [Abstract]
Trading Securities	0	0
Derivative financial instruments:
Foreign exchange forward contracts	0	0
Derivative financial instruments:
Foreign exchange forward contracts	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Equity Securities [Member]
Available-for-sale securities:
Securities	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Corporate Debt Securities [Member]
Available-for-sale securities:
Securities	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | U.S. Treasury [Member]
Available-for-sale securities:
Securities	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Federal Agency [Member]
Available-for-sale securities:
Securities	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Mortgage-backed [Member]
Available-for-sale securities:
Securities	0	0
Money Market Funds [Member] | Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Financial assets carried at fair value
Money market funds	4,507	4,860
Money Market Funds [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Financial assets carried at fair value
Money market funds	4,507	4,860
Money Market Funds [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Financial assets carried at fair value
Money market funds	0	0
Money Market Funds [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Financial assets carried at fair value
Money market funds	$ 0	$ 0