v3.20.4
Property and Equipment - Schedule of Property and Equipment and Classification of Depreciation (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Property, Plant and Equipment [Line Items]    
Cost $ 191,718 $ 157,659
Accumulated depreciation 99,614 46,261
Net book value 92,104 111,398
Depreciation 38,192 16,779
Impairment charge 16,838  
Cost of revenues    
Property, Plant and Equipment [Line Items]    
Depreciation 3,160 1,253
Sales and marketing    
Property, Plant and Equipment [Line Items]    
Depreciation 9,710 4,929
Research and development    
Property, Plant and Equipment [Line Items]    
Depreciation 19,587 7,940
General and administrative    
Property, Plant and Equipment [Line Items]    
Depreciation 5,735 2,657
Leasehold improvements    
Property, Plant and Equipment [Line Items]    
Cost 131,196 110,477
Accumulated depreciation 65,052 24,675
Net book value 66,144 85,802
Computer equipment    
Property, Plant and Equipment [Line Items]    
Cost 24,387 18,141
Accumulated depreciation 15,056 10,989
Net book value 9,331 7,152
Fulfillment robots    
Property, Plant and Equipment [Line Items]    
Cost 5,419 3,220
Accumulated depreciation 2,005 197
Net book value 3,414 3,023
Office furniture and equipment    
Property, Plant and Equipment [Line Items]    
Cost 30,716 25,821
Accumulated depreciation 17,501 10,400
Net book value $ 13,215 $ 15,421