Significant Accounting Policies - Contract Balances (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($) category	Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($)
Significant Accounting Policies
Accounts receivable, net	$ 99,322		$ 101,616
Deferred revenues	19,475		17,585
Customer deposits	19,090		16,955
Costs to obtain and fulfill a contract	1,575		1,674
Unbilled receivables, net	24,900		$ 25,700
Revenue recognized from deferred revenue	6,800
Amortization of contract costs	$ 200	$ 300
Practical expedient on incremental costs of obtaining contracts	true
Number of principal categories | category	2