Revenue from Contracts with Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue
Total revenues	$ 12,879	$ 11,770
Products
Disaggregation of Revenue
Total revenues	12,199	11,082
Services
Disaggregation of Revenue
Total revenues	$ 680	$ 688

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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+ Details