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Consolidated balance sheet components - Capitalized Software (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Capitalized software $ 43,804 $ 28,472
Less accumulated amortization (23,750) (14,459)
Capitalized software, net $ 20,054 $ 14,013