DERIVATIVES AND FAIR VALUE MEASUREMENTS (Schedule of Financial Assets and Financial Liabilities Measured at Fair Value on a Recurring Basis) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012
Assets
Money market funds	$ 198,155
Foreign currency hedge contracts	4,756
Assets, Fair Value Disclosure, Total	202,911
Liabilities
Foreign currency hedge contracts	1,808
Liabilities, Fair Value Disclosure	1,808
Fair Value, Inputs, Level 1
Assets
Money market funds	198,155
Foreign currency hedge contracts	0
Assets, Fair Value Disclosure, Total	198,155
Liabilities
Foreign currency hedge contracts	0
Liabilities, Fair Value Disclosure	0
Fair Value, Inputs, Level 2
Assets
Money market funds	0
Foreign currency hedge contracts	4,756
Assets, Fair Value Disclosure, Total	4,756
Liabilities
Foreign currency hedge contracts	1,808
Liabilities, Fair Value Disclosure	1,808
Fair Value, Inputs, Level 3
Assets
Money market funds	0
Foreign currency hedge contracts	0
Assets, Fair Value Disclosure, Total	0
Liabilities
Foreign currency hedge contracts	0
Liabilities, Fair Value Disclosure	$ 0