Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition - Schedule of Revenue Recognition (Details)

v3.22.1
Revenue Recognition - Schedule of Revenue Recognition (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Disaggregation of Revenue [Line Items]    
Total revenue $ 5,031 $ 4,030
Functional Neurosurgery Navigation and Therapy - Disposable Products    
Disaggregation of Revenue [Line Items]    
Total revenue 1,863 1,917
Functional Neurosurgery Navigation and Therapy - Services    
Disaggregation of Revenue [Line Items]    
Total revenue 375 0
Functional Neurosurgery Navigation and Therapy    
Disaggregation of Revenue [Line Items]    
Total revenue 2,238 1,917
Biologics and Drug Delivery - Disposable Products    
Disaggregation of Revenue [Line Items]    
Total revenue 850 914
Biologics and Drug Delivery - Services    
Disaggregation of Revenue [Line Items]    
Total revenue 1,304 746
Biologics and Drug Delivery    
Disaggregation of Revenue [Line Items]    
Total revenue 2,154 1,660
Capital Equipment and Software - Systems and Software Products    
Disaggregation of Revenue [Line Items]    
Total revenue 450 331
Capital Equipment and Software - Services    
Disaggregation of Revenue [Line Items]    
Total revenue 189 122
Capital Equipment and Software    
Disaggregation of Revenue [Line Items]    
Total revenue $ 639 $ 453