Quarterly report pursuant to Section 13 or 15(d)

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

v3.7.0.1
Classification of Compensation Expense Associated with Share-Based Payments (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Allocated Share-based Compensation Expense $ 761 $ 946 $ 1,140 $ 1,780
Cost Of Revenue        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Allocated Share-based Compensation Expense 67 99 107 169
Sales and Marketing        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Allocated Share-based Compensation Expense 93 187 166 321
General and Administrative        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Allocated Share-based Compensation Expense 506 541 699 1,092
Engineering And Development        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Allocated Share-based Compensation Expense $ 95 $ 119 $ 168 $ 198