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Balance Sheet Detail (Tables)
9 Months Ended
Sep. 30, 2023
Balance Sheet Detail [Abstract]  
Schedule of Inventories
   September 30,   December 31, 
   2023   2022 
   (in thousands) 
Inventories:        
Raw materials  $938   $1,279 
Work-in-process   3,241    2,595 
Finished goods   1,517    1,474 
   $5,696   $5,348