FAIR VALUE MEASUREMENT OF ASSETS AND LIABILITIES (Details 2) (Recurring Basis, USD $) In Thousands, unless otherwise specified	Sep. 28, 2012	Mar. 31, 2012
Level 1 | Available for sale investments
Financial Instruments Measured at Fair Value on a Recurring Basis
Total Assets	$ 5,056	$ 5,994
Level 1 | Mutual funds, money market accounts and equity securities
Financial Instruments Measured at Fair Value on a Recurring Basis
Total Assets	3,049	3,411
Level 2 | Money market funds and time deposits
Financial Instruments Measured at Fair Value on a Recurring Basis
Total Assets	315,282	343,906
Level 2 | Foreign exchange forward contracts
Financial Instruments Measured at Fair Value on a Recurring Basis
Total Assets	24,342	20,969
Total Liabilities	(6,930)	(8,105)
Level 2 | Mutual funds, money market accounts and equity securities
Financial Instruments Measured at Fair Value on a Recurring Basis
Total Assets	54,800	54,241
Level 3 | Deferred purchase price receivable
Financial Instruments Measured at Fair Value on a Recurring Basis
Total Assets	458,085	514,895
Level 3 | Warrants to purchase common shares
Financial Instruments Measured at Fair Value on a Recurring Basis
Total Assets	23,000
Total | Money market funds and time deposits
Financial Instruments Measured at Fair Value on a Recurring Basis
Total Assets	315,282	343,906
Total | Deferred purchase price receivable
Financial Instruments Measured at Fair Value on a Recurring Basis
Total Assets	458,085	514,895
Total | Foreign exchange forward contracts
Financial Instruments Measured at Fair Value on a Recurring Basis
Total Assets	24,342	20,969
Total Liabilities	(6,930)	(8,105)
Total | Available for sale investments
Financial Instruments Measured at Fair Value on a Recurring Basis
Total Assets	5,056	5,994
Total | Warrants to purchase common shares
Financial Instruments Measured at Fair Value on a Recurring Basis
Total Assets	23,000
Total | Mutual funds, money market accounts and equity securities
Financial Instruments Measured at Fair Value on a Recurring Basis
Total Assets	$ 57,849	$ 57,652