Fair Value Measurements - Fair Value Hierarchy for Financial Assets Measured at Fair Value on Recurring Basis (Details) (USD $)						3 Months Ended	12 Months Ended	3 Months Ended
	Mar. 30, 2013	Mar. 31, 2012	Mar. 30, 2013 Omni Guide, Inc.	Mar. 31, 2012 Omni Guide, Inc.	Apr. 02, 2011 Omni Guide, Inc. Series E Preferred Stock	Jul. 02, 2011 Auction Rate Securities	Apr. 02, 2011 Auction Rate Securities	Jul. 02, 2011 Accumulated Net Unrealized Investment Gain (Loss), Reclassification Adjustments Auction Rate Securities	Mar. 30, 2013 Fair Value, Measurements, Recurring Money Market Instruments	Mar. 31, 2012 Fair Value, Measurements, Recurring Money Market Instruments	Mar. 30, 2013 Fair Value, Measurements, Recurring Commercial Paper	Mar. 31, 2012 Fair Value, Measurements, Recurring Commercial Paper	Mar. 30, 2013 Fair Value, Measurements, Recurring Government agencies	Mar. 31, 2012 Fair Value, Measurements, Recurring Government agencies	Mar. 30, 2013 Fair Value, Measurements, Recurring Corporate Bonds	Mar. 31, 2012 Fair Value, Measurements, Recurring Corporate Bonds	Mar. 30, 2013 Fair Value, Measurements, Recurring Municipal Bonds	Mar. 30, 2013 Fair Value, Measurements, Recurring Forward purchase or (sale) contracts Japanese Yen	Mar. 31, 2012 Fair Value, Measurements, Recurring Forward purchase or (sale) contracts Japanese Yen	Mar. 30, 2013 Fair Value, Measurements, Recurring Forward purchase or (sale) contracts New Taiwan Dollars	Mar. 31, 2012 Fair Value, Measurements, Recurring Forward purchase or (sale) contracts New Taiwan Dollars	Mar. 30, 2013 Fair Value, Measurements, Recurring Forward purchase or (sale) contracts Korean Won	Mar. 31, 2012 Fair Value, Measurements, Recurring Forward purchase or (sale) contracts Korean Won	Mar. 30, 2013 Fair Value, Measurements, Recurring Forward purchase or (sale) contracts Euro	Mar. 31, 2012 Fair Value, Measurements, Recurring Forward purchase or (sale) contracts Euro	Mar. 30, 2013 Fair Value, Measurements, Recurring Forward purchase or (sale) contracts British Pound	Mar. 31, 2012 Fair Value, Measurements, Recurring Forward purchase or (sale) contracts British Pound	Mar. 30, 2013 Fair Value, Measurements, Recurring Forward purchase or (sale) contracts Chinese Renminbi	Mar. 31, 2012 Fair Value, Measurements, Recurring Forward purchase or (sale) contracts Chinese Renminbi	Mar. 30, 2013 Fair Value, Measurements, Recurring Forward purchase or (sale) contracts Singapore Dollar	Mar. 30, 2013 Fair Value, Measurements, Recurring Level 1 Money Market Instruments	Mar. 31, 2012 Fair Value, Measurements, Recurring Level 1 Money Market Instruments	Mar. 30, 2013 Fair Value, Measurements, Recurring Level 1 Commercial Paper	Mar. 31, 2012 Fair Value, Measurements, Recurring Level 1 Commercial Paper	Mar. 30, 2013 Fair Value, Measurements, Recurring Level 1 Government agencies	Mar. 31, 2012 Fair Value, Measurements, Recurring Level 1 Government agencies	Mar. 30, 2013 Fair Value, Measurements, Recurring Level 1 Corporate Bonds	Mar. 31, 2012 Fair Value, Measurements, Recurring Level 1 Corporate Bonds	Mar. 30, 2013 Fair Value, Measurements, Recurring Level 1 Municipal Bonds	Mar. 30, 2013 Fair Value, Measurements, Recurring Level 1 Forward purchase or (sale) contracts Japanese Yen	Mar. 31, 2012 Fair Value, Measurements, Recurring Level 1 Forward purchase or (sale) contracts Japanese Yen	Mar. 30, 2013 Fair Value, Measurements, Recurring Level 1 Forward purchase or (sale) contracts New Taiwan Dollars	Mar. 31, 2012 Fair Value, Measurements, Recurring Level 1 Forward purchase or (sale) contracts New Taiwan Dollars	Mar. 30, 2013 Fair Value, Measurements, Recurring Level 1 Forward purchase or (sale) contracts Korean Won	Mar. 31, 2012 Fair Value, Measurements, Recurring Level 1 Forward purchase or (sale) contracts Korean Won	Mar. 30, 2013 Fair Value, Measurements, Recurring Level 1 Forward purchase or (sale) contracts Euro	Mar. 31, 2012 Fair Value, Measurements, Recurring Level 1 Forward purchase or (sale) contracts Euro	Mar. 30, 2013 Fair Value, Measurements, Recurring Level 1 Forward purchase or (sale) contracts British Pound	Mar. 31, 2012 Fair Value, Measurements, Recurring Level 1 Forward purchase or (sale) contracts British Pound	Mar. 30, 2013 Fair Value, Measurements, Recurring Level 1 Forward purchase or (sale) contracts Chinese Renminbi	Mar. 31, 2012 Fair Value, Measurements, Recurring Level 1 Forward purchase or (sale) contracts Chinese Renminbi	Mar. 30, 2013 Fair Value, Measurements, Recurring Level 1 Forward purchase or (sale) contracts Singapore Dollar	Mar. 30, 2013 Fair Value, Measurements, Recurring Level 2 Money Market Instruments	Mar. 31, 2012 Fair Value, Measurements, Recurring Level 2 Money Market Instruments	Mar. 30, 2013 Fair Value, Measurements, Recurring Level 2 Commercial Paper	Mar. 31, 2012 Fair Value, Measurements, Recurring Level 2 Commercial Paper	Mar. 30, 2013 Fair Value, Measurements, Recurring Level 2 Government agencies	Mar. 31, 2012 Fair Value, Measurements, Recurring Level 2 Government agencies	Mar. 30, 2013 Fair Value, Measurements, Recurring Level 2 Corporate Bonds	Mar. 31, 2012 Fair Value, Measurements, Recurring Level 2 Corporate Bonds	Mar. 30, 2013 Fair Value, Measurements, Recurring Level 2 Municipal Bonds	Mar. 30, 2013 Fair Value, Measurements, Recurring Level 2 Forward purchase or (sale) contracts Japanese Yen	Mar. 31, 2012 Fair Value, Measurements, Recurring Level 2 Forward purchase or (sale) contracts Japanese Yen	Mar. 30, 2013 Fair Value, Measurements, Recurring Level 2 Forward purchase or (sale) contracts New Taiwan Dollars	Mar. 31, 2012 Fair Value, Measurements, Recurring Level 2 Forward purchase or (sale) contracts New Taiwan Dollars	Mar. 30, 2013 Fair Value, Measurements, Recurring Level 2 Forward purchase or (sale) contracts Korean Won	Mar. 31, 2012 Fair Value, Measurements, Recurring Level 2 Forward purchase or (sale) contracts Korean Won	Mar. 30, 2013 Fair Value, Measurements, Recurring Level 2 Forward purchase or (sale) contracts Euro	Mar. 31, 2012 Fair Value, Measurements, Recurring Level 2 Forward purchase or (sale) contracts Euro	Mar. 30, 2013 Fair Value, Measurements, Recurring Level 2 Forward purchase or (sale) contracts British Pound	Mar. 31, 2012 Fair Value, Measurements, Recurring Level 2 Forward purchase or (sale) contracts British Pound	Mar. 30, 2013 Fair Value, Measurements, Recurring Level 2 Forward purchase or (sale) contracts Chinese Renminbi	Mar. 31, 2012 Fair Value, Measurements, Recurring Level 2 Forward purchase or (sale) contracts Chinese Renminbi	Mar. 30, 2013 Fair Value, Measurements, Recurring Level 2 Forward purchase or (sale) contracts Singapore Dollar	Mar. 30, 2013 Fair Value, Measurements, Recurring Level 3 Money Market Instruments	Mar. 31, 2012 Fair Value, Measurements, Recurring Level 3 Money Market Instruments	Mar. 30, 2013 Fair Value, Measurements, Recurring Level 3 Commercial Paper	Mar. 31, 2012 Fair Value, Measurements, Recurring Level 3 Commercial Paper	Mar. 30, 2013 Fair Value, Measurements, Recurring Level 3 Government agencies	Mar. 31, 2012 Fair Value, Measurements, Recurring Level 3 Government agencies	Mar. 30, 2013 Fair Value, Measurements, Recurring Level 3 Corporate Bonds	Mar. 31, 2012 Fair Value, Measurements, Recurring Level 3 Corporate Bonds	Mar. 30, 2013 Fair Value, Measurements, Recurring Level 3 Municipal Bonds	Mar. 30, 2013 Fair Value, Measurements, Recurring Level 3 Forward purchase or (sale) contracts Japanese Yen	Mar. 31, 2012 Fair Value, Measurements, Recurring Level 3 Forward purchase or (sale) contracts Japanese Yen	Mar. 30, 2013 Fair Value, Measurements, Recurring Level 3 Forward purchase or (sale) contracts New Taiwan Dollars	Mar. 31, 2012 Fair Value, Measurements, Recurring Level 3 Forward purchase or (sale) contracts New Taiwan Dollars	Mar. 30, 2013 Fair Value, Measurements, Recurring Level 3 Forward purchase or (sale) contracts Korean Won	Mar. 31, 2012 Fair Value, Measurements, Recurring Level 3 Forward purchase or (sale) contracts Korean Won	Mar. 30, 2013 Fair Value, Measurements, Recurring Level 3 Forward purchase or (sale) contracts Euro	Mar. 31, 2012 Fair Value, Measurements, Recurring Level 3 Forward purchase or (sale) contracts Euro	Mar. 30, 2013 Fair Value, Measurements, Recurring Level 3 Forward purchase or (sale) contracts British Pound	Mar. 31, 2012 Fair Value, Measurements, Recurring Level 3 Forward purchase or (sale) contracts British Pound	Mar. 30, 2013 Fair Value, Measurements, Recurring Level 3 Forward purchase or (sale) contracts Chinese Renminbi	Mar. 31, 2012 Fair Value, Measurements, Recurring Level 3 Forward purchase or (sale) contracts Chinese Renminbi	Mar. 30, 2013 Fair Value, Measurements, Recurring Level 3 Forward purchase or (sale) contracts Singapore Dollar
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Minority equity investment	$ 8,966,000	$ 8,966,000	$ 9,000,000	$ 0	$ 3,000,000
Gain on sale of securities						2,700,000	700,000	1,400,000
Fair value of financial assets									$ 9,457,000	$ 5,244,000	$ 51,443,000	$ 83,645,000	$ 29,646,000	$ 67,261,000	$ 18,396,000	$ 20,121,000	$ 3,389,000	$ 176,000	$ 202,000	$ (10,000)	$ (5,000)	$ (46,000)	$ (17,000)	$ 100,000	$ (1,000)	$ 38,000	$ 20,000	$ (1,000)	$ (1,000)	$ (12,000)	$ 9,457,000	$ 5,244,000	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 51,443,000	$ 83,645,000	$ 29,646,000	$ 67,261,000	$ 18,396,000	$ 20,121,000	$ 3,389,000	$ 176,000	$ 202,000	$ (10,000)	$ (5,000)	$ (46,000)	$ (17,000)	$ 100,000	$ (1,000)	$ 38,000	$ 20,000	$ (1,000)	$ (1,000)	$ (12,000)	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0

This item represents the aggregate carrying amount of all cost-method investments as reported on or included in the balance sheet. The original cost of the investments may differ from the aggregate carrying amount disclosed due to various adjustments such as: (i) dividends received in excess of earnings after the date of investment that are considered a return of investment and therefore recorded as reductions to cost of the investment, or (ii) a series of operating losses of an investee or other factors which may indicate that a decrease in value of the investment has occurred which is other than temporary and accordingly such decrease in value has been recognized.

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-Publisher AICPA

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-Publisher FASB

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