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Inventories (Tables) | 12 Months Ended
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Dec. 31, 2022
Inventory Disclosure [Abstract] |
Inventories | The components of inventories and the related changes in the allowance for excess and obsolete inventories are as follows:
| December 31,
| 2022 |  | 2021
| (in thousands)
Raw materials | $ | 194,159 |  |  | $ | 124,480 |
Work in process | 3,501 |  |  | 3,049 |
Finished goods | 5,806 |  |  | 4,528 |
| 203,466 |  |  | 132,057 |
Less: Allowance for excess and obsolete inventories | (4,527) |  |  | (1,787) |
Total, net | $ | 198,939 |  |  | $ | 130,270 |
Inventories (Allowance) |
| Years Ended December 31,
| 2022 |  | 2021 |  | 2020
Allowance for excess and obsolete inventories: | (in thousands)
Balance, beginning of period | $ | 1,787 |  |  | $ | 3,261 |  |  | $ | 2,644 |
Provisions for excess and obsolete inventories | 2,852 |  |  | 629 |  |  | 1,108 |
Inventories written off | (112) |  |  | (2,103) |  |  | (491) |
Balance, end of period | $ | 4,527 |  |  | $ | 1,787 |  |  | $ | 3,261 |

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