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Revenue (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Disclosure of disaggregation of revenue from contracts with customers [line items]    
Contracts with customers $ 6,443 $ 6,990
Leasing 430 314
Total revenue 6,873 7,304
Capital equipment    
Disclosure of disaggregation of revenue from contracts with customers [line items]    
Contracts with customers 3,150 4,581
Total revenue 3,150 4,581
Recurring - non-capital    
Disclosure of disaggregation of revenue from contracts with customers [line items]    
Contracts with customers 3,293 2,409
Leasing 430 314
Total revenue $ 3,723 $ 2,723