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Financial Assets and Financial Liabilities Measured at Fair Value on a Recurring Basis (Detail) (Fair Value, Measurements, Recurring, USD $)
In Thousands
Oct. 01, 2011
Assets 
Money market funds$ 143,035
Foreign currency hedge contracts1,541
Assets, Fair Value Disclosure, Total144,576
Liabilities 
Foreign currency hedge contracts4,185
Liabilities, Fair Value Disclosure4,185
Fair Value, Inputs, Level 1
 
Assets 
Money market funds143,035
Assets, Fair Value Disclosure, Total143,035
Fair Value, Inputs, Level 2
 
Assets 
Foreign currency hedge contracts1,541
Assets, Fair Value Disclosure, Total1,541
Liabilities 
Foreign currency hedge contracts4,185
Liabilities, Fair Value Disclosure$ 4,185