Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Summary of Net Revenues (Detail)

v3.8.0.1
Summary of Significant Accounting Policies - Summary of Net Revenues (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]        
Total net revenues $ 3,719 $ 2,321 $ 10,914 $ 6,408
Media Agency Revenues [Member]        
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]        
Total net revenues 3,288 2,223 9,926 6,197
AI Platform Revenues [Member]        
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]        
Total net revenues $ 431 $ 98 $ 988 $ 211