Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition - Schedule of Revenue Recognition (Details)

v3.21.2
Revenue Recognition - Schedule of Revenue Recognition (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Disaggregation of Revenue [Line Items]        
Total revenues $ 4,574 $ 3,519 $ 12,017 $ 9,113
Functional Neurosurgery Navigation and Therapy - Disposable Products        
Disaggregation of Revenue [Line Items]        
Total revenues 2,004 1,840 5,782 4,652
Functional Neurosurgery Navigation and Therapy - Services        
Disaggregation of Revenue [Line Items]        
Total revenues 150 150
Functional Neurosurgery Navigation and Therapy        
Disaggregation of Revenue [Line Items]        
Total revenues 2,154 1,840 5,932 4,652
Biologics and Drug Delivery - Disposable Products        
Disaggregation of Revenue [Line Items]        
Total revenues 1,137 420 2,501 1,000
Biologics and Drug Delivery - Services        
Disaggregation of Revenue [Line Items]        
Total revenues 920 1,055 2,605 2,671
Biologics and Drug Delivery        
Disaggregation of Revenue [Line Items]        
Total revenues 2,057 1,475 5,106 3,671
Capital Equipment and Software - Systems and Software Products        
Disaggregation of Revenue [Line Items]        
Total revenues 197 111 580 534
Capital Equipment and Software - Services        
Disaggregation of Revenue [Line Items]        
Total revenues 166 93 399 256
Capital Equipment and Software        
Disaggregation of Revenue [Line Items]        
Total revenues $ 363 $ 204 $ 979 $ 790