XML 115 R92.htm IDEA: XBRL DOCUMENT v3.21.1
Property and equipment - Summary of Depreciation Expense (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Property, Plant and Equipment [Line Items]      
Depreciation expense $ 9,277 $ 5,824 $ 5,595
Cost of revenue [Member]      
Property, Plant and Equipment [Line Items]      
Depreciation expense 6,247 5,198 5,018
Research and development expenses [Member]      
Property, Plant and Equipment [Line Items]      
Depreciation expense 529 300 331
General and administrative expenses [Member]      
Property, Plant and Equipment [Line Items]      
Depreciation expense 2,492 317 245
Sales and marketing expenses [Member]      
Property, Plant and Equipment [Line Items]      
Depreciation expense $ 9 $ 9 $ 1