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Property, Plant and Equipment, net | 12 Months Ended
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Dec. 31, 2023
Property, Plant and Equipment [Abstract] |
Property, Plant and Equipment, net | 10. Property, Plant and Equipment, net Property, plant and equipment consists of:
|  | Estimated Useful |  | December 31, |
|  | Lives |  | 2023 |  |  | 2022 |
|  |  |  | (In thousands) |
Land improvements |  | 10 - 25 years |  | $ | 7,910 |  |  | $ | 7,240 |
Buildings |  | 15 - 40 years |  |  | 174,085 |  |  |  | 169,315 |
Machinery, equipment and other |  | 3 - 10 years |  |  | 440,008 |  |  |  | 385,745 |
|  |  |  |  | 622,003 |  |  |  | 562,300 |
Less: Accumulated depreciation |  |  |  |  | (439,776 | ) |  |  | (410,850 | )
|  |  |  |  | 182,227 |  |  |  | 151,450 |
Land |  |  |  |  | 10,357 |  |  |  | 9,858 |
Construction work in process |  |  |  |  | 25,047 |  |  |  | 19,962 |
Total property, plant and equipment |  |  |  | $ | 217,631 |  |  | $ | 181,270 |
Depreciation expense totaled $26.7 million, $26.6 million and $27.2 million for 2023, 2022 and 2021, respectively.

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- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 360 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//360/tableOfContent Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 6 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480321/958-360-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480321/958-360-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 7 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480321/958-360-50-7 + Details
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