Significant Accounting Policies - Contract Balances (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2022 USD ($) category	Dec. 31, 2021 USD ($)
Significant Accounting Policies
Accounts receivable, net	$ 93,600	$ 184,102
Deferred revenues	16,726	17,518
Customer deposits	18,278	17,707
Costs to obtain and fulfill a contract	1,835	2,328
Unbilled receivables, net	24,300	$ 22,600
Revenue recognized from deferred revenue	15,300
Amortization of contract costs	$ 800
Practical expedient on incremental costs of obtaining contracts	true
Number of principal categories | category	2