v3.20.4
Property and Equipment (Tables)
 12 Months Ended
Dec. 31, 2019
Property, Plant and Equipment [Abstract]  
Schedule of Property and Equipment, and Classification of Depreciation
 December 31, 2020
Cost
$  
Accumulated depreciation and impairment(1)
$
Net book
value
$
Leasehold improvements131,196 65,052 66,144 
Computer equipment24,387 15,056 9,331 
Fulfillment robots5,419 2,005 3,414 
Office furniture and equipment30,716 17,501 13,215 
 191,718 99,614 92,104 
(1) Included in accumulated depreciation is $16,838 of impairment on leasehold improvements in the year.

 December 31, 2019
 
Cost
$
Accumulated depreciation
$
Net book
value
$
Leasehold improvements110,477 24,675 85,802 
Computer equipment18,141 10,989 7,152 
Fulfillment robots3,220 197 3,023 
Office furniture and equipment25,821 10,400 15,421 
 157,659 46,261 111,398 
The following table illustrates the classification of depreciation in the consolidated statements of operations and comprehensive income (loss):
Years ended
 
December 31, 2020
$
December 31, 2019
$
Cost of revenues3,160 1,253 
Sales and marketing9,710 4,929 
Research and development19,587 7,940 
General and administrative5,735 2,657 
 38,192 16,779