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Summary of Significant Accounting Policies (Schedule of Inventory, Current) (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Raw materials | $ 107,034 | $ 67,775
Work-in-progress | 9,755 | 7,005
Finished goods | 21,326 | 15,768
Total inventories, net | 138,115 | $ 90,548
Particulate Matter Sensor Gen 1 Assets [Member] |  |
Finished goods | $ 2,283 |

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