Summary of Significant Accounting Policies - Allowance for credit losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Allowance for credit loss roll forward
Balance at beginning of period	$ 2,392	$ 3,666	$ 3,749	$ 3,977
Charged to selling, general and administrative expense	364	19	1,286	119
Write-offs	(9)	(119)	(2,288)	(530)
Total	$ 2,747	$ 3,566	$ 2,747	$ 3,566