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Property, Plant and Equipment | 12 Months Ended
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Dec. 31, 2022
Property, Plant and Equipment [Abstract] |
Property, Plant and Equipment | PROPERTY, PLANT AND EQUIPMENT A summary of changes in property, plant and equipment follows (in millions):
| December 31, 2021 |  | Additions / (Depreciation) |  |  |  | December 31, 2022
Land | $ | 1.2 |  |  | $ | — |  |  |  |  | $ | 1.2 |
Buildings and leasehold improvements | 4.6 |  |  | 0.2 |  |  |  |  | 4.8 |
Machinery and equipment | 1.4 |  |  | 0.6 |  |  |  |  | 2.0 |
Other | 1.1 |  |  | — |  |  |  |  | 1.1 |
Property, plant and equipment, gross | 8.3 |  |  | 0.8 |  |  |  |  | 9.1 |
Accumulated depreciation | (3.0) |  |  | (0.6) |  |  |  |  | (3.6) |
Property, plant and equipment, net | $ | 5.3 |  |  | $ | 0.2 |  |  |  |  | $ | 5.5 |
Depreciation expense was $0.6 million in 2022, $0.6 million in 2021 and $0.5 million in 2020.

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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 https://asc.fasb.org/extlink&oid=126982197&loc=d3e99893-112916 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI https://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 https://asc.fasb.org/extlink&oid=126982197&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 https://asc.fasb.org/extlink&oid=126982197&loc=d3e99779-112916 + Details
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