Condensed Statements of Cash Flows (unaudited) (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Oct. 01, 2010
Cash Flows From Operating Activities:
Net income (loss)	$ 8,432	$ (14,886)
Less: (Income) loss from discontinued operations, net of taxes	(6,915)	9,255
Income (loss) from continuing operations, net of taxes	1,517	(5,631)
Adjustments to reconcile income (loss) from continuing operations, net of taxes, to net cash used in operating activities, net of assets acquired and liabilities assumed:
Stock-based compensation expense	490	851
Inventory-related charges		(37)
Depreciation and amortization	2,040	13,350
Gain on release of foreign currency translation, net of taxes	(2,542)
Adjustment of deferred taxes	1,365
Loss on retirement/impairment of assets		10,205
Changes in current assets and liabilities	2,217	(19,259)
Net cash provided by (used in) operating activities of continuing operations	5,087	(521)
Net cash provided by (used in) operating activities of discontinued operations	6,933	(20,259)
Net cash provided by (used in) operating activities	12,020	(20,780)
Cash Flows From Investing Activities:
Purchases of net assets in acquisitions	(7,530)
Purchases of intangible assets		(953)
Purchases of property and equipment		(106)
Purchases of marketable securities	(491,499)	(202,183)
Sales of marketable securities	396,194	129,496
Maturities of marketable securities	62,321	65,011
Net cash used in investing activities of continuing operations	(40,514)	(8,735)
Net cash provided by investing activities of discontinued operations		28,945
Net cash (used in) provided by investing activities	(40,514)	20,210
Cash Flows From Financing Activities:
Repurchases of long-term debt		(68)
Repurchases of common stock		(20,385)
Proceeds from issuance of common stock	29	2,359
Net cash provided by (used in) financing activities of continuing operations	29	(18,094)
Net cash provided by financing activities	29	(18,094)
Effect of foreign currency translation on cash and cash equivalents	299	(253)
Net decrease in cash and cash equivalents	(28,166)	(18,917)
Cash and cash equivalents, beginning of period	38,276	85,930
Cash and cash equivalents, end of period	10,110	67,013
Non-Cash Investing and Financing Activities:
Unrealized gains (losses) on available-for-sale securities, net of taxes	$ 336	$ (1,018)