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Property and Equipment, net (Tables)
12 Months Ended
Dec. 31, 2020
Property and Equipment, net [Abstract]  
Property and Equipment, Net
Property and Equipment, net:

  
 
December 31, 2020
  
December 31, 2019
 
       
Lasers placed-in-service
 
$
22,942
  
$
20,925
 
Equipment, computer hardware and software
  
146
   
146
 
Furniture and fixtures
  
243
   
234
 
Leasehold improvements
  
43
   
26
 
 
  
23,374
   
21,331
 
Accumulated depreciation and amortization
  
(17,845
)
  
(15,962
)
Property and equipment, net
 
$
5,529
  
$
5,369