Other Inome (Expenses), Net (Details) (USD $)	3 Months Ended			6 Months Ended		12 Months Ended
	Jul. 02, 2011	Jul. 03, 2010	Jul. 03, 2010	Jul. 02, 2011	Jul. 03, 2010	Jan. 01, 2011
Other Income, Net
Interest Income, Operating	$ 324,000	$ 302,000		$ 697,000	$ 550,000
Gains on sale of marketable securities	7,979,000			8,044,000
Gains on sale of non-marketable securities	108,000	242,000		2,729,000	4,756,000
Gains (losses) on trading securities in the NQDC trust	1,177,000	1,102,000		2,912,000	2,179,000
Gains (losses) on foreign exchange	(1,246,000)	1,998,000		(1,725,000)	2,190,000
Equity losses from investments	(35,000)	(46,000)		(65,000)	(73,000)
Write-down of investments		(1,500,000)	(1,500,000)		(1,500,000)
Loss on early extinguishment of debt (Note 2)		(5,321,000)			(5,321,000)	(5,705,000)
Other income	87,000	123,000		271,000	93,000
Other income (expense), net	8,394,000	(3,100,000)		12,863,000	2,874,000
Other Income (Expense), Net (Textuals) [Abstract]
Gain on sale of interest in equity method investments				2,700,000
Gain on sale of available-for-sale securities	8,000,000			8,000,000
Total gains on five cost method investments					4,800,000
Write-down of investment securities		$ 1,500,000	$ 1,500,000		$ 1,500,000