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Balance Sheet Detail (Tables)
3 Months Ended
Mar. 31, 2023
Balance Sheet Detail [Abstract]  
Schedule of inventories
   March 31,   December 31, 
   2023   2022 
   (in thousands) 
Inventories:        
Raw materials  $1,568   $1,279 
Work-in-process   1,228    2,595 
Finished goods   2,057    1,474 
   $4,853   $5,348