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Consolidated Statements Of Operations (USD $)
In Thousands, except Per Share data, unless otherwise specified
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Consolidated Statements Of Operations [Abstract]      
Net revenues $ 402,862 $ 338,942 $ 337,422
Cost of net revenues 318,270 272,648 249,764
Gross profit 84,592 66,294 87,658
Operating costs and expenses:      
Research and development 61,392 48,906 44,892
Sales and marketing 29,830 20,978 19,857
General and administrative 21,600 21,233 20,159
Amortization of acquired intangibles 2,220 179 0
Goodwill impairment 3,277 0 0
Total operating costs and expenses 118,319 91,296 84,908
Operating income (loss) (33,727) (25,002) 2,750
Other income (expense):      
Interest income (expense), net 384 (2,518) 1,374
Other income (expense), net (1,052) 1,963 315
Income (loss) before taxes (34,395) (25,557) 4,439
Income tax expense (benefit) (9,503) 7,893 527
Net income (loss) $ (24,892) $ (33,450) $ 3,912
Per share data:      
Basic $ (0.78) $ (1.06) $ 0.13
Diluted $ (0.78) $ (1.06) $ 0.13
Weighted average shares used in computation of basic and diluted net income (loss) per share:      
Basic 32,043 31,494 30,648
Diluted 32,043 31,494 31,224