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Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (USD $)
In Thousands, except Share data, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Condensed Consolidated Statement of Operations and Comprehensive Income (Loss) [Abstract]        
Net revenues $ 102,446 $ 118,021 $ 202,596 $ 179,805
Cost of net revenues 79,195 91,839 158,357 147,629
Gross profit 23,251 26,182 44,239 32,176
Operating costs and expenses:        
Research and development 14,457 14,832 30,286 30,391
Sales and marketing 7,310 8,210 14,988 15,594
General and administrative 5,702 5,714 11,236 10,307
Goodwill and intangible assets impairment losses     29,337  
Amortization of purchased intangible assets 227 527 664 1,055
Total operating costs and expenses 27,696 29,283 86,511 57,347
Operating loss (4,445) (3,101) (42,272) (25,171)
Other income (expense):        
Interest income, net 83 85 166 243
Other expense, net (153) (607) (146) (485)
Loss before income taxes (4,515) (3,623) (42,252) (25,413)
Income tax (benefit) provision (15) 275 169 573
Net loss (4,500) (3,898) (42,421) (25,986)
Per share data:        
Basic $ (0.14) $ (0.12) $ (1.31) $ (0.81)
Diluted $ (0.14) $ (0.12) $ (1.31) $ (0.81)
Weighted average shares used in computation of basic and diluted net loss per share:        
Basic 32,674 32,048 32,485 31,979
Diluted 32,674 32,048 32,485 31,979
Comprehensive loss $ (4,507) $ (3,794) $ (42,404) $ (25,980)