Quarterly report pursuant to Section 13 or 15(d)

Summary of Net Revenue by Geographic Location (Detail)

v3.8.0.1
Summary of Net Revenue by Geographic Location (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Segment Reporting Information [Line Items]    
Net revenue $ 10,020 $ 10,874
United States    
Segment Reporting Information [Line Items]    
Net revenue 5,693 6,843
International    
Segment Reporting Information [Line Items]    
Net revenue $ 4,327 $ 4,031