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Inventories (Tables)
9 Months Ended
Sep. 30, 2023
Inventory Disclosure [Abstract]  
Schedule of Inventories
Inventories were as follows (in thousands):
September 30,
2023
December 31, 2022
Raw materials and manufacturing supplies$5,406 $4,977 
Finished products1,374 1,964 
  Total inventories$6,780 $6,941