Quarterly report pursuant to Section 13 or 15(d)

Classification of Compensation Expense Associated with Share-Based Payments (Detail)

v3.4.0.3
Classification of Compensation Expense Associated with Share-Based Payments (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Allocated Share-based Compensation Expense $ 834 $ 700
Cost Of Revenue    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Allocated Share-based Compensation Expense 70 76
Sales and Marketing    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Allocated Share-based Compensation Expense 134 293
General and Administrative    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Allocated Share-based Compensation Expense 551 236
Engineering And Development    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Allocated Share-based Compensation Expense $ 79 $ 95