Other Comprehensive Income (Loss) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Jan. 01, 2011	Jan. 02, 2010
Comprehensive income (loss)
Net income (loss)	$ 72,229	$ 126,538	$ (149,871)
Foreign currency translation gain, net of related tax effects	2,731	7,667	5,897
Changes in unrealized holding gains or losses on available for-sale securities, net of reclassification adjustment for realized gains and losses and net of related tax effects	(5,140)	6,438	200
Changes in defined benefit plan liabilities, net of related tax effects	306	(4,319)	(69)
Comprehensive income (loss)	$ 70,126	$ 136,324	$ (143,843)