Revenues - Disaggregation of Revenues (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Disaggregation Of Revenue [Line Items]
Revenues		$ 5,161	$ 6,308
Subscriptions [Member]
Disaggregation Of Revenue [Line Items]
Revenues		3,363	4,025
Strategic Agreements [Member]
Disaggregation Of Revenue [Line Items]
Revenues		1,798	2,283
United States of America [Member]
Disaggregation Of Revenue [Line Items]
Revenues		3,956	4,766
United Kingdom [Member]
Disaggregation Of Revenue [Line Items]
Revenues		631	880
Other [Member]
Disaggregation Of Revenue [Line Items]
Revenues	[1]	$ 574	$ 662

[1] No individual country within the “Other” category accounted for 10% or more of revenues for any period presented.