Quarterly report pursuant to Section 13 or 15(d)

Summary of Net Revenue by Geographic Location (Detail)

v3.10.0.1
Summary of Net Revenue by Geographic Location (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Segment Reporting Information [Line Items]        
Net revenue $ 12,154 $ 12,612 $ 22,174 $ 23,486
United States        
Segment Reporting Information [Line Items]        
Net revenue 7,164 8,194 12,857 15,037
International        
Segment Reporting Information [Line Items]        
Net revenue $ 4,990 $ 4,418 $ 9,317 $ 8,449