Revenues - Schedule of Revenue Disaggregated by Revenue Source (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue [Line Items]
Revenue	$ 237	$ 286
Research and development agreements [Member]
Disaggregation of Revenue [Line Items]
Revenue	225	126
Product revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue	0	160
Royalties on product sales [Member]
Disaggregation of Revenue [Line Items]
Revenue	$ 12	$ 0

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