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Inventories (Tables) | 12 Months Ended
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Dec. 31, 2023
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,
| 2023 |  | 2022
| (in thousands)
Raw materials | $ | 211,259 |  |  | $ | 194,159 |
Work in process | 5,523 |  |  | 3,501 |
Finished goods | 2,910 |  |  | 5,806 |
| 219,692 |  |  | 203,466 |
Less: Allowance for excess and obsolete inventories | (6,160) |  |  | (4,527) |
Total, net | $ | 213,532 |  |  | $ | 198,939 |
Inventories (Allowance) |
| Years Ended December 31,
| 2023 |  | 2022 |  | 2021
Allowance for excess and obsolete inventories: | (in thousands)
Balance, beginning of period | $ | 4,527 |  |  | $ | 1,787 |  |  | $ | 3,261 |
Provisions for excess and obsolete inventories | 5,480 |  |  | 2,852 |  |  | 629 |
Inventories written off | (3,847) |  |  | (112) |  |  | (2,103) |
Balance, end of period | $ | 6,160 |  |  | $ | 4,527 |  |  | $ | 1,787 |

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