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Property and Equipment, net (Tables)
 3 Months Ended
Mar. 31, 2021
Property and Equipment, net [Abstract]  
Property and Equipment, Net
Property and equipment consist of:
 
  
March 31, 2021
  
December 31, 2020
 
Lasers placed-in-service
 
$
23,596
  
$
22,942
 
Equipment, computer hardware and software
  
223
   
146
 
Furniture and fixtures
  
252
   
243
 
Leasehold improvements
  
43
   
43
 
   
24,114
   
23,374
 
Accumulated depreciation and amortization
  
(18,326
)
  
(17,845
)
Property and equipment, net
 
$
5,788
  
$
5,529