v3.10.0.1
Property and Equipment - Schedule of Property and Equipment and Classification of Depreciation (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Property, Plant and Equipment [Line Items]    
Cost $ 91,787 $ 85,362
Accumulated depreciation 30,175 35,002
Net book value 61,612 50,360
Depreciation 16,905 16,580
Cost of revenues    
Property, Plant and Equipment [Line Items]    
Depreciation 5,950 8,055
Sales and marketing    
Property, Plant and Equipment [Line Items]    
Depreciation 4,087 2,405
Research and development    
Property, Plant and Equipment [Line Items]    
Depreciation 4,900 4,654
General and administrative    
Property, Plant and Equipment [Line Items]    
Depreciation 1,968 1,466
Leasehold improvements    
Property, Plant and Equipment [Line Items]    
Cost 63,402 43,058
Accumulated depreciation 16,498 10,541
Net book value 46,904 32,517
Computer equipment    
Property, Plant and Equipment [Line Items]    
Cost 14,293 34,644
Accumulated depreciation 7,540 20,592
Net book value 6,753 14,052
Office furniture and equipment    
Property, Plant and Equipment [Line Items]    
Cost 14,092 7,660
Accumulated depreciation 6,137 3,869
Net book value $ 7,955 $ 3,791