Inventories - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022		Jun. 30, 2021	[1]	Dec. 31, 2021
Inventory [Line Items]
Finished goods inventory with title passed to customer	$ 4,500		$ 4,500				$ 2,600
Write-downs for excess inventory	$ 300	$ 100	$ 278	[1]	$ 200

[1] In the six months ended June 30, 2022, the Company recorded write-downs of $0.3 million in Costs and Expenses Applicable to Technology Sales principally to reduce the carrying value of service parts held in Russia. In the six months ended June 30, 2021, the Company recorded write-downs of $0.2 million in Costs and Expenses Applicable to Technology Sales to reduce the carrying value of excess inventory.