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 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Segment Reporting Information [Line Items]        
Net revenue $ 10,936 $ 10,806 $ 33,110 $ 34,292
United States        
Segment Reporting Information [Line Items]        
Net revenue 6,953 6,804 19,810 21,840
International        
Segment Reporting Information [Line Items]        
Net revenue $ 3,983 $ 4,002 $ 13,300 $ 12,452