Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2014	Mar. 31, 2013
Operating activities:
Net income	$ 33,233	$ 18,432
Adjustments:
Depreciation and amortization	45,929	44,285
Stock-based compensation expense	20,985	25,546
Non-cash restructuring of operations and other items, net	434	6,596
Gain on sale of property and equipment		(4)
Unrealized foreign exchange loss	494	589
Deferred taxes	(51)	(26)
Changes in assets and liabilities:
Accounts receivable, net	19,626	40,652
Inventories	(5,616)	25,123
Prepaid expenses and other assets	(32,903)	(7,955)
Accounts payable	7,936	(33,054)
Accrued and other liabilities	(47,054)	(57,354)
Net cash provided by operating activities	43,013	62,830
Investing activities:
Purchases of debt securities available-for-sale	(26)	(53,345)
Proceeds from maturities and sales of debt securities available-for-sale	25,601	24,117
Purchases of other investments	(232)	(750)
Purchases of property and equipment	(20,527)	(25,075)
Proceeds from sale of property and equipment	12	27
Net cash provided by/(used in) investing activities	4,828	(55,026)
Financing activities:
Issuances of common stock	51,965	8,165
Purchases of common stock under repurchase programs		(60,765)
Net cash provided by/(used in) financing activities	51,965	(52,600)
Effect of exchange rate changes on cash and cash equivalents	14	(1,507)
Net change in cash and cash equivalents	99,820	(46,303)
Cash and cash equivalents at beginning of period	542,768	471,528
Cash and cash equivalents at end of period	$ 642,588	$ 425,225