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Property, Plant and Equipment | 12 Months Ended
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Dec. 31, 2021
Property, Plant and Equipment [Abstract] |
Property, Plant and Equipment | Property, Plant, and Equipment Property, plant, and equipment as of December 31, 2021 and 2020 consisted of the following:
|  | December 31,
|  | 2021 |  | 2020
Land |  | $ | 6,224 |  |  | $ | 6,627 |
Improvements to land and leaseholds |  | 15,416 |  |  | 17,573 |
Buildings |  | 27,206 |  |  | 27,348 |
Machinery and equipment, including equipment under finance leases |  | 112,021 |  |  | 116,175 |
Construction in progress |  | 1,194 |  |  | 915 |
Gross property, plant, and equipment |  | 162,061 |  |  | 168,638 |
Less: accumulated depreciation and amortization, including accumulated amortization of finance leases |  | (103,839) |  |  | (106,553) |
Property, plant, and equipment - net |  | $ | 58,222 |  |  | $ | 62,085 |
Depreciation expense, including amortization of assets under finance leases, for the years ended December 31, 2021 and 2020 amounted to $8,051 and $7,850, respectively. There were no material asset impairments recorded for the year ended December 31, 2021. On September 24, 2021, the Company executed the sale of its Piling Products division for $23,902 in total expected proceeds. The Company retained all pre-closing receivables and liabilities associated with the division. The sale included substantially all fixed assets held by the Company associated with the division. The Piling Products division was included in the Fabricated Steel Products business unit within the Steel Products and Measurement business segment.

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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://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=120429125&loc=d3e99893-112916 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI http://asc.fasb.org/topic&trid=2155823 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=120429125&loc=SL120174063-112916 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120429125&loc=d3e99779-112916 + Details
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