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Unaudited Condensed Consolidated Statements of Cash Flows (USD $)
In Thousands, unless otherwise specified
9 Months Ended
Nov. 02, 2013
Oct. 27, 2012
Cash flows from operating activities:    
Net loss $ (12,302) $ (66,571)
Depreciation and amortization 14,764 17,082
Stock-based compensation 5,387 8,078
Provision for excess and obsolete inventory 613 3,613
Provision for sales returns, discounts, and doubtful accounts 250 174
Deferred income taxes 3,491 18,098
Loss on disposal of equipment 19 142
Accretion of contributed leasehold improvements (30) (189)
Gain on acquisition   (1,417)
Gain on sale of development project (1,079)  
Gain on sale of privately-held investment (137)  
Impairment of IP, mask sets, design tools and other assets 338  
Impairment loss on privately-held investment 300  
Changes in operating assets and liabilities:    
Accounts receivable (17,859) (3,456)
Inventory 5,139 2,312
Prepaid expenses and other current assets 3,156 (7,402)
Other non-current assets 1 (2,684)
Accounts payable 3,371 11,296
Accrued compensation and related benefits and other liabilities 1,214 19,003
Income taxes payable 1,619 (758)
Other long-term liabilities (313) (2,319)
Net cash provided by (used in) operating activities 8,354 (4,998)
Cash flows from investing activities:    
Restricted cash (2)  
Purchases of marketable securities (17,732) (15,264)
Sales and maturities of marketable securities 13,240 72,339
Purchases of software, equipment and leasehold improvements (6,534) (2,754)
Proceeds from sale of development project, net of transaction fees 1,971  
Proceeds from sale of privately-held investment 2,137  
Cash paid in connection with acquisition   (39,740)
Repayment of note receivable 450  
Purchases of IP (4,046) (6,767)
Net cash provided by (used in) investing activities (10,516) 7,814
Cash flows from financing activities:    
Net proceeds from exercises of employee stock options and stock purchase rights 1,448 2,536
Excess tax benefits from share-based compensation   (345)
Net cash provided by financing activities 1,448 2,191
Effect of foreign exchange rate changes on cash and cash equivalents (178) 41
Net increase (decrease) in cash and cash equivalents (892) 5,048
Cash and cash equivalents at beginning of period 51,218 44,283
Cash and cash equivalents at end of period 50,326 49,331
Supplemental disclosure of cash flow information:    
Cash paid for income taxes $ 5,149 $ 2,177