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Summary of Significant Accounting Policies - Schedule of Revenues by Geographic Region (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Disaggregation Of Revenue [Line Items]    
Total revenues $ 18,038 $ 13,612
Netherlands    
Disaggregation Of Revenue [Line Items]    
Total revenues 736 742
Switzerland    
Disaggregation Of Revenue [Line Items]    
Total revenues 17,181 12,897
United States    
Disaggregation Of Revenue [Line Items]    
Total revenues $ 121 $ (27)