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Inventories - Inventories, Net of Reserves (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Current: |  |
Raw materials | $ 3,821 | $ 4,085
Finished goods | 6,044 | 5,948
Total current inventory | 9,865 | 10,033
Long-term: |  |
Raw materials | 1,576 | 1,980
Finished goods | 1,634 | 1,587
Total long-term inventory | $ 3,210 | $ 3,567

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