Accounts receivable (Tables)

9 Months Ended

Sep. 30, 2021

Receivables [Abstract]

Summary of accounts receivable allowance for credit losses

The following sets forth activities in our allowance for credit losses (in thousands):

	Total
Balance as of January 1, 2021	$	1,118
Charges to provision for credit losses		540
Write-off of uncollectible receivables		(307	)
Balance as of September 30, 2021	$	1,351