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Revenue from services provided - Summary of Disaggregation of revenue by Major Product Lines (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total revenue $ 157,620 $ 125,773 $ 98,676
Subscription cost [member]      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenue from contract with customer including assessed tax 162,132 129,292 100,611
Revenue from contract with customer assessed tax (13,657) (10,826) (7,245)
Total revenue 148,475 118,466 93,366
Services cost [member]      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenue from contract with customer including assessed tax 9,799 8,154 5,599
Revenue from contract with customer assessed tax (654) (847) (289)
Total revenue $ 9,145 $ 7,307 $ 5,310