Revenues and Business Information - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) Item	Dec. 31, 2020 USD ($) Item	Dec. 31, 2019 Item
Revenues From External Customers And Long Lived Assets [Line Items]
Deferred revenue	$ 4,539	$ 2,692
Revenues recognized from opening balance of deferred revenues	$ 2,558	$ 2,354
Client | Revenue
Revenues From External Customers And Long Lived Assets [Line Items]
Number of clients | Item	0	0	0