Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011
Consolidated Statements of Comprehensive Income
Net income	$ 63,548	$ 35,472	$ 73,242
Net changes to available-for-sale securities:
Unrealized gains arising during the period	1,000	4	409
Net changes to cash flow hedges:
Unrealized losses arising during the period	(956)	(424)	(2,640)
Reclassification for losses included in net income	2,295	2,237	3,320
Other comprehensive income, before tax	2,339	1,817	1,089
Provision for income taxes	818	636	381
Other comprehensive income	1,521	1,181	708
Comprehensive income	$ 65,069	$ 36,653	$ 73,950