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Inventories - Inventories, Net of Reserves (Details) - USD ($)
$ in Thousands
Mar. 31, 2023
Dec. 31, 2022
Current:    
Raw materials $ 4,552 $ 4,499
Finished goods 3,843 4,462
Total current inventory 8,395 8,961
Long-term:    
Raw materials 928 1,068
Finished goods 1,957 1,639
Total long-term inventory $ 2,885 $ 2,707