Accounts receivable - Summary Of Accounts Receivable Allowance For Credit Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Credit Loss [Abstract]
Balance as of beginning of period	$ 1,118	$ 904	$ 597
Charges to provision for doubtful accounts	533	238	318
Write-off of uncollectible receivables	(317)	(24)	(11)
Balance as of end of period	$ 1,334	$ 1,118	$ 904