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Inventories
3 Months Ended
Mar. 31, 2024
Inventory Disclosure [Abstract]  
Inventories Inventories
Inventories consist of the following as of March 31, 2024 and December 31, 2023 (in thousands):
March 31,
2024
December 31, 2023
Raw materials and manufacturing supplies$5,906 $5,693 
Finished products1,935 1,988 
  Total inventories$7,841 $7,681 
As of March 31, 2024 and December 31, 2023, no inventory valuation allowance was determined to be necessary.