Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011
Statement of Other Comprehensive Income [Abstract]
Net income	$ 439,948	$ 72,229	$ 126,538
Other comprehensive income, net of tax effects:
Foreign currency translation gain (loss)	(5,337)	2,731	7,667
Changes in unrealized holding gains or losses on available-for-sale securities, net of reclassification adjustment for realized gains and losses	(905)	(5,140)	6,438
Changes in defined benefit plan liabilities	(761)	306	(4,319)
Total other comprehensive income (loss), net of tax effects	(7,003)	(2,103)	9,786
Comprehensive income	$ 432,945	$ 70,126	$ 136,324