Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Intangible Assets, Net - Summary of Amortization Expense Associated with Finite-Lived Intangible Assets (Detail)

v3.19.1
Goodwill and Intangible Assets, Net - Summary of Amortization Expense Associated with Finite-Lived Intangible Assets (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Finite Lived Intangible Assets [Line Items]    
Total amortization of expenses $ 841 $ 306
Cost of Revenue [Member]    
Finite Lived Intangible Assets [Line Items]    
Total amortization of expenses 370 48
Selling and Marketing [Member]    
Finite Lived Intangible Assets [Line Items]    
Total amortization of expenses 72  
Research and Development [Member]    
Finite Lived Intangible Assets [Line Items]    
Total amortization of expenses 256 255
General and Administrative [Member]    
Finite Lived Intangible Assets [Line Items]    
Total amortization of expenses $ 143 $ 3