Annual report pursuant to Section 13 and 15(d)

Revenue Recognition - Schedule of Revenue Recognition (Details)

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Revenue Recognition - Schedule of Revenue Recognition (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Revenues $ 16,299 $ 12,829
Functional Neurosurgery Navigation and Therapy - Disposable Products    
Revenues 7,696 6,211
Functional Neurosurgery Navigation and Therapy - Services    
Revenues 375 0
Subtotal - Functional Neurosurgery Navigation and Therapy    
Revenues 8,071 6,211
Biologics and Drug Delivery - Disposable Products    
Revenues 3,353 1,528
Biologics and Drug Delivery - Services    
Revenues 3,442 3,672
Subtotal - Biologics and Drug Delivery    
Revenues 6,795 5,200
Capital Equipment and Software - Systems and Software Products    
Revenues 864 1,093
Capital Equipment and Software - Services    
Revenues 569 325
Subtotal - Capital Equipment and Software Revenue    
Revenues $ 1,433 $ 1,418