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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2022
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):
| 2022 |  | 2021 |  | 2020
Beginning balance | $ | 3,738 |  |  | $ | 3,529 |  |  | $ | 5,951 |
Adoption of ASU 2016-13, cumulative-effect adjustment to retained earnings at January 1, 2020 | — |  |  | — |  |  | 385 |
Bad debt expense, net of recoveries | 1,221 |  |  | 898 |  |  | 1,321 |
Accounts written off against allowance and other adjustments | (1,213) |  |  | (689) |  |  | (4,128) |
Ending balance | $ | 3,746 |  |  | $ | 3,738 |  |  | $ | 3,529 |
Property, Plant and Equipment | The table below sets forth the depreciation expense recognized during the years ended December 31 (in thousands):
| 2022 |  | 2021 |  | 2020
Depreciation expense | $ | 14,583 |  |  | $ | 13,110 |  |  | $ | 11,252 |
Components of property, plant, and equipment at December 31 consisted of the following (in thousands):
| 2022 |  | 2021
Land and land improvements | $ | 4,704 |  |  | $ | 4,634 |
Building and improvements | 43,416 |  |  | 42,526 |
Machinery and equipment | 223,843 |  |  | 194,015 |
Construction in progress | 13,065 |  |  | 20,293 |
Property, plant, and equipment, gross | 285,028 |  |  | 261,468 |
Less: accumulated depreciation | (175,444) |  |  | (164,583) |
Property, plant, and equipment, net | $ | 109,584 |  |  | $ | 96,885 |

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