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Inventories - Components of inventory (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Inventory Disclosure [Abstract]    
Raw materials $ 5,603 $ 5,800
Finished goods 17,475 18,130
Inventories 23,078 23,930
Less reserve for excess and obsolete inventory (7,193) (8,210)
Inventories, net $ 15,885 $ 15,720