Quarterly report pursuant to Section 13 or 15(d)

Consolidated Financial Statements Details - Additional Information (Detail)

v3.10.0.1
Consolidated Financial Statements Details - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Condensed Financial Statements, Captions [Line Items]        
Depreciation Expense $ 236 $ 9 $ 451 $ 32
Gross media placements 42,087 30,270 102,959 87,756
Cost of revenues 1,570 292 2,953 824
Amortization of deferred debt discounts and issuance costs       3,740
Convertible Notes Payable [Member]        
Condensed Financial Statements, Captions [Line Items]        
Amortization of deferred debt discounts and issuance costs       3,740
Billed Revenues [Member]        
Condensed Financial Statements, Captions [Line Items]        
Gross media placements 34,521 26,510 86,416 74,717
Netted Against Billings [Member]        
Condensed Financial Statements, Captions [Line Items]        
Cost of revenues $ 30,225 $ 23,222 $ 75,690 $ 64,791