Annual report pursuant to Section 13 and 15(d)

Classification Of Compensation Expense Associated With Share-Based Payments (Detail)

v2.4.0.6
Classification Of Compensation Expense Associated With Share-Based Payments (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Unrecognized Share Based Compensation Expense [Line Items]      
Allocated Share-based Compensation Expense $ 1,600 $ 1,528 $ 727
Cost Of Revenue
     
Unrecognized Share Based Compensation Expense [Line Items]      
Allocated Share-based Compensation Expense 245 175 41
Sales and Marketing
     
Unrecognized Share Based Compensation Expense [Line Items]      
Allocated Share-based Compensation Expense 514 463 193
General and Administrative Expense
     
Unrecognized Share Based Compensation Expense [Line Items]      
Allocated Share-based Compensation Expense 668 751 407
Engineering And Development
     
Unrecognized Share Based Compensation Expense [Line Items]      
Allocated Share-based Compensation Expense $ 173 $ 139 $ 86