XML 16 R46.htm IDEA: XBRL DOCUMENT v2.4.0.6
Share-based compensation - Schedule of Share-Based Compensation by Line Item in Condensed Consolidated Statements of Operations (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Share-based compensation expense $ 2,096 $ 1,297 $ 4,834 $ 5,066
Cost of sales [Member]
       
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Share-based compensation expense 155 34 438 106
Sales and marketing [Member]
       
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Share-based compensation expense 598 439 1,440 1,549
General and administrative [Member]
       
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Share-based compensation expense 1,309 793 2,851 3,282
Research and development [Member]
       
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Share-based compensation expense $ 34 $ 31 $ 105 $ 129