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Condensed Consolidated Statements of Cash Flows (unaudited) (USD $)
In Thousands
6 Months Ended
Jul. 01, 2011
Jul. 02, 2010
Cash Flows From Operating Activities:    
Net income (loss) $ 7,097 $ (16,103)
Less: Income from discontinued operations, net of taxes (6,830) (10,960)
Income (loss) from continuing operations, net of taxes 267 (27,063)
Adjustments to reconcile income (loss) from continuing operations, net of taxes to net cash used in operating activities    
Stock-based compensation expense 460 851
Inventory-related charges   100
Depreciation and amortization 1,412 13,722
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 2,999 (17,681)
Net cash provided by (used in) operating activities of continuing operations 3,961 (19,866)
Net cash provided by operating activities of discontinued operations 6,848 1,607
Net cash provided by (used in) operating activities 10,809 (18,259)
Cash Flows From Investing Activities:    
Purchases of intangible assets   (281)
Purchases of property and equipment   (106)
Purchases of marketable securities (478,222) (159,010)
Sales of marketable securities 383,143 59,074
Maturities of marketable securities 49,571 50,151
Net cash used in investing activities of continuing operations (45,508) (50,172)
Net cash provided by investing activities of discontinued operations   28,945
Net cash used in investing activities (45,508) (21,227)
Cash Flows From Financing Activities:    
Repurchases of long-term debt   (68)
Proceeds from issuance of common stock 29 1,806
Net cash provided by financing activities of continuing operations 29 1,738
Net cash provided by financing activities 29 1,738
Effect of foreign currency translation on cash and cash equivalents 288 (587)
Net increase (decrease) in cash and cash equivalents (34,382) (38,335)
Cash and cash equivalents, beginning of period 38,276 85,930
Cash and cash equivalents, end of period 3,894 47,595
Non-Cash Investing and Financing Activities:    
Unrealized gains (losses) on available-for-sale securities, net of taxes $ 76 $ (854)