Basis of presentation and summary of significant accounting policies (Tables)

9 Months Ended

Sep. 30, 2021

Accounting Policies [Abstract]

Schedule of accounts receivable and allowance for doubtful accounts

	As of
	September 30, 2021		December 31, 2020
	(in thousands)
Trade accounts receivable	$	31,027	$	17,308
Allowance for doubtful accounts	(254)		(418)
Total trade accounts receivable, net	$	30,773	$	16,890