Significant Accounting Policies - Contract Balances (Details) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) category	Jun. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)	Jan. 01, 2023 USD ($)
Significant Accounting Policies
Accounts receivable, net	$ 61,501		$ 61,501		$ 76,893	$ 101,616
Deferred revenues	15,166		15,166		13,107	17,585
Customer deposits	27,898		27,898		23,838	16,955
Costs to obtain and fulfill a contract	1,459		1,459		1,400	$ 1,674
Unbilled receivables, net	23,100		23,100		23,900
Revenue recognized from deferred revenue	3,400	$ 8,000	7,800	$ 14,800	$ 17,300
Amortization of contract costs	$ 200	$ 200	$ 500	$ 400
Number of principal categories | category			2
Practical expedient on incremental costs of obtaining contracts			true