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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2023
Accounting Policies [Abstract] |
Summary Of Activity Recorded Within The Allowance For Doubtful Accounts | The following table summarizes activity recorded within the allowance for doubtful accounts and contract assets balances for the years ended December 31 (in thousands):
| 2023 |  | 2022 |  | 2021
Beginning balance | $ | 3,746 |  |  | $ | 3,738 |  |  | $ | 3,529 |
Bad debt expense, net of recoveries | 3,148 |  |  | 1,221 |  |  | 898 |
Accounts written off against allowance and other adjustments | (1,322) |  |  | (1,213) |  |  | (689) |
Ending balance | $ | 5,572 |  |  | $ | 3,746 |  |  | $ | 3,738 |
Property, Plant and Equipment | The table below sets forth the depreciation expense recognized during the years ended December 31 (in thousands):
| 2023 |  | 2022 |  | 2021
Depreciation expense | $ | 16,139 |  |  | $ | 14,583 |  |  | $ | 13,110 |
Components of property, plant, and equipment at December 31 consisted of the following (in thousands):
| 2023 |  | 2022
Land and land improvements | $ | 4,544 |  |  | $ | 4,704 |
Building and improvements | 43,732 |  |  | 43,416 |
Machinery and equipment | 231,275 |  |  | 223,843 |
Construction in progress | 17,391 |  |  | 13,065 |
Property, plant, and equipment, gross | 296,942 |  |  | 285,028 |
Less: accumulated depreciation | (189,339) |  |  | (175,444) |
Property, plant, and equipment, net | $ | 107,603 |  |  | $ | 109,584 |

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