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Summary of Significant Accounting Policies - Concentrations of Credit Risk (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2021
USD ($)
customer
Dec. 31, 2020
USD ($)
Concentration of risk, financial assets    
Financial instruments with off-balance sheet risk of accounting loss, assets $ 0  
Concentration risk, financial liabilities    
Financial instruments with off-balance sheet risk of accounting loss, liabilities 0  
Total revenue $ 4,101 $ 749
Customer Concentration Risk    
Concentration risk, financial liabilities    
Number of major customers | customer 3  
Customer Concentration Risk | Sales Revenue | Customer One    
Concentration risk, financial liabilities    
Total revenue $ 1,300  
Customer Concentration Risk | Sales Revenue | Customer Two    
Concentration risk, financial liabilities    
Total revenue 1,300  
Customer Concentration Risk | Sales Revenue | Customer Three    
Concentration risk, financial liabilities    
Total revenue $ 1,200  
Customer Concentration Risk | Sales Revenue | Three Customers    
Concentration risk, financial liabilities    
Concentration risk, percentage 93.00%  
Customer Concentration Risk | Accounts Receivable | Customer One    
Concentration risk, financial liabilities    
Concentration risk, percentage 35.00%  
Customer Concentration Risk | Accounts Receivable | Customer Two    
Concentration risk, financial liabilities    
Concentration risk, percentage 34.00%  
Customer Concentration Risk | Accounts Receivable | Customer Three    
Concentration risk, financial liabilities    
Concentration risk, percentage 29.00%