Revenues - Disaggregation of Revenues (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Disaggregation Of Revenue [Line Items]
Revenues		$ 4,977	$ 6,155	$ 14,858	$ 18,557
Subscriptions [Member]
Disaggregation Of Revenue [Line Items]
Revenues		3,090	3,832	9,379	11,595
Strategic Agreements [Member]
Disaggregation Of Revenue [Line Items]
Revenues		1,887	2,323	5,479	6,962
United States of America [Member]
Disaggregation Of Revenue [Line Items]
Revenues		4,023	4,799	11,710	14,252
United Kingdom [Member]
Disaggregation Of Revenue [Line Items]
Revenues		561	690	1,716	2,328
Other [Member]
Disaggregation Of Revenue [Line Items]
Revenues	[1]	$ 393	$ 666	$ 1,432	$ 1,977

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