Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Disaggregated revenue (Details)

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Summary of Significant Accounting Policies - Disaggregated revenue (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Disaggregation of Revenue [Line Items]    
Total revenue $ 23,692 $ 4,785
Product revenue    
Disaggregation of Revenue [Line Items]    
Revenue 13,917 1,279
Leased Equipment    
Disaggregation of Revenue [Line Items]    
Revenue 6,130 2,073
SaaS and Maintenance Services    
Disaggregation of Revenue [Line Items]    
Revenue 2,568 1,083
Professional Services    
Disaggregation of Revenue [Line Items]    
Revenue 1,077 350
Subscription revenue.    
Disaggregation of Revenue [Line Items]    
Subscription revenue 7,855 2,637
Service revenue.    
Disaggregation of Revenue [Line Items]    
Revenue 1,920 869
Lease Revenue    
Disaggregation of Revenue [Line Items]    
Revenue $ 1,700 $ 600