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Property, Plant and Equipment | 12 Months Ended
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Dec. 31, 2023
Property, Plant and Equipment [Abstract] |
Property, Plant and Equipment |
| 5. | Property, Plant and Equipment
Property, plant and equipment consist of the following:
December 31, |  | 2023 |  |  | 2022 |
Land and improvements |  | $ | 2,826 |  |  | $ | 2,826 |
Buildings and improvements |  |  | 74,650 |  |  |  | 72,788 |
Machinery and equipment |  |  | 322,730 |  |  |  | 314,032 |
Dies and tools |  |  | 62,191 |  |  |  | 57,480 |
Property, plant and equipment |  |  | 462,397 |  |  |  | 447,126 |
Less allowances for depreciation |  |  | (390,863 | ) |  |  | (370,273 | )
Net property, plant and equipment |  | $ | 71,534 |  |  | $ | 76,853 |
Depreciation expense totaled $21.1 million, $24.4 million, and $25.8 million in 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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