Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Property and Equipment, Net - Additional Information (Detail)

v3.8.0.1
Property and Equipment, Net - Additional Information (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Property, Plant and Equipment [Line Items]      
Depreciation and amortization $ 15,596 $ 15,937 $ 6,730
Cost of Revenue [Member]      
Property, Plant and Equipment [Line Items]      
Depreciation and amortization 9,300 11,800 4,200
General and Administrative Expense [Member]      
Property, Plant and Equipment [Line Items]      
Depreciation and amortization 6,200 4,200 2,500
Research and Development Expense [Member]      
Property, Plant and Equipment [Line Items]      
Depreciation and amortization $ 96,000 $ 0 $ 0