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v3.19.1

Inventories (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2019
Inventories |
Components of inventories | The components of inventories are summarized below (in thousands):
|  | March 31, |  | December 31, |
|  | 2019 |  | 2018 |
Inventories: |  |  |  |  |  |  |
Raw materials |  | $ | 21,482 |  | $ | 26,966 |
Work in process |  |  | 28,088 |  |  | 28,217 |
Finished goods |  |  | 3,455 |  |  | 3,388 |
|  | $ | 53,025 |  | $ | 58,571 |

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