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Stock-Based Compensation (Tables)
6 Months Ended
Jun. 30, 2012
Disclosure Of Compensation Related Costs, Share-Based Payments [Abstract]  
Schedule of stock-based employee compensation expenses included in our unaudited consolidated statements of comprehensive income

 
Three Months Ended
June 30,
Six Months Ended
June 30,
2012
2011
2012
2011
Cost of product sales
$ 1 $ 2 $ 1 $ 4
Cost of services
6 10 12 19
Research and development
36 64 73 131
Selling and marketing
57 22 135 44
General and administrative
31 484 57 687
Stock-based compensation expense
$ 131 $ 582 $ 278 $ 885