Condensed Consolidated Statements of Cash Flows (USD $) In Thousands	6 Months Ended
	Jul. 02, 2011	Jul. 03, 2010
Cash flows from operating activities:
Net income	$ 23,950	$ 27,825
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	8,509	6,968
Gain on sale or maturity of marketable securities, net	(454)	(55)
Gain on sale of land	0	(720)
Stock-based compensation	3,081	2,472
Changes in assets and liabilities:
Accounts receivable, net	(15,185)	(13,742)
Inventories	2,264	(903)
Prepaid expenses and other assets	(5,824)	(3,076)
Foundry advances (includes advance credits)	0	10,772
Accounts payable and accrued expenses (includes restructuring)	335	6,593
Accrued payroll obligations	(3,361)	4,148
Deferred income and allowances on sales to sell-through distributors	889	7,943
Other liabilities	3,463	712
Net cash provided by operating activities	17,667	48,937
Cash flows from investing activities:
Proceeds from sales or maturities of marketable securities	51,313	15,394
Purchase of marketable securities	(40,823)	(54,053)
Proceeds from sale of excess real estate	0	871
Capital expenditures	(7,307)	(4,732)
Net cash provided by (used in) investing activities	3,183	(42,520)
Cash flows from financing activities:
Net share settlement upon issuance of RSUs	(435)	(218)
Purchase of treasury stock	(7,977)	0
Net proceeds from issuance of common stock	4,213	2,341
Net cash (used in) provided by financing activities	(4,199)	2,123
Net increase in cash and cash equivalents	16,651	8,540
Beginning cash and cash equivalents	174,384	156,069
Ending cash and cash equivalents	191,035	164,609
Supplemental disclosures of non-cash investing and financing activities:
Unrealized loss on assets measured at fair value, net, included in Accumulated other comprehensive income	(7)	(17)
Distribution of deferred compensation from trust assets	212	169
Retirement of treasury stock	$ (7,964)	$ (326)