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Intangible assets, net (Tables)
 12 Months Ended
Dec. 31, 2022
Intangible assets, net [Abstract]  
Identifiable Intangible Assets
Identifiable intangible assets are recorded in Intangible assets, net in the accompanying Consolidated Balance Sheets and are comprised of the following:

  
December 31,
  
   
2022
    
2021
  
 
(In thousands)
  
Gross Amount
    
Accumulated Amortization
    
Gross Amount
    
Accumulated Amortization
  
Purchased technology
  
$
1,591
    
$
(1,349
)
  
$
1,591
    
$
(1,195
)
Patents
    
15
      
(15
)
    
15
      
(14
)
Total
  
$
1,606
    
$
(1,364
)
  
$
1,606
    
$
(1,209
)