Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011
Operating Activities
Net income	$ 63,548	$ 35,472	$ 73,242
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation of property and equipment	13,621	13,570	11,797
Net gain on the purchase of property and equipment	(8,457)
Amortization of other intangible assets and other assets	14,154	11,030	7,494
Impairment of long-lived assets	708	1,322
Stock-based compensation expense	31,176	36,115	40,324
Income tax benefit from employee stock-based awards	1,827	2,814	3,295
Excess income tax benefit from employee stock-based awards	(1,294)	(2,404)	(2,412)
Deferred income taxes	4,725	(445)	(552)
Changes in operating assets and liabilities:
Accounts receivable	(20,743)	(8,562)	11,342
Inventories	(13,056)	5,334	(7,811)
Prepaid expenses and other assets	10,629	(5,948)	(5,300)
Accounts payable	7,217	(2,176)	(777)
Accrued expenses	(3,812)	(1,320)	(2,590)
Deferred income on shipments to distributors	4,623	(1,915)	(2,343)
Income taxes	(7,816)	5,855	(7,774)
Net cash provided by operating activities	97,050	88,742	117,935
Investing Activities
Purchases of available-for-sale investments	(192,450)	(178,676)	(357,777)
Proceeds from sales and maturities of marketable securities	235,517	193,474	352,779
Purchases of property and equipment	(102,043)	(8,690)	(13,850)
Purchases of other assets	(8,508)	(4,018)	(8,372)
Acquisitions of businesses, net of cash acquired	(71,852)	(27,262)	(28,021)
Net cash used in investing activities	(139,336)	(25,172)	(55,241)
Financing Activities
Proceeds from issuance of common stock, net of shares withheld for taxes	15,148	7,660	18,055
Excess income tax benefit from employee stock-based awards	1,294	2,404	2,412
Repurchases of common stock	(62,019)	(110,063)	(140,331)
Proceeds from issuance of long-term debt, net	98,325
Payments on debt		(7,174)
Net cash provided by (used in) financing activities	52,748	(107,173)	(119,864)
Increase (decrease) in cash and cash equivalents	10,462	(43,603)	(57,170)
Cash and cash equivalents at beginning of period	94,964	138,567	195,737
Cash and cash equivalents at end of period	105,426	94,964	138,567
Supplemental Disclosure of Cash Flow Information:
Interest paid	677	35	90
Income taxes paid	$ 23,564	$ 8,241	$ 20,780