Summary of Significant Accounting Policies - Accounts Receivable (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Summary of Significant Accounting Policies
Accounts receivable invoices days outstanding due minimum	30 days
Accounts receivable invoices days outstanding due maximum	90 days
Trade receivables	$ 60,167	$ 46,395
Unbilled receivables	9,071	7,698
Other receivables	579	130
Allowance for credit losses	(262)	(132)
Accounts receivable, net	69,555	54,091
Rollforward of credit losses
Beginning Balance	132	185
Provision for credit losses	215	23
Charge-offs	(85)	(89)
Recoveries		13
Ending Balance	$ 262	$ 132