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Property, Plant, and Equipment | 3 Months Ended
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Mar. 31, 2024
Property, Plant and Equipment [Abstract] |
Property, Plant, and Equipment | Property, Plant, and Equipment Property, plant, and equipment consist of the following:
(In thousands) | March 31, 2024 |  | December 31, 2023 |  | Estimated Useful Life
Buildings and land | $ | 1,318 |  |  | $ | 1,318 |  |  | 30 years - Buildings
Enterprise hardware and software | 1,857 |  |  | 1,857 |  |  | 3 years
Leaseholds | 1,779 |  |  | 1,787 |  |  | Lesser of lease term or estimated useful life
Equipment | 1,262 |  |  | 1,263 |  |  | 7 years
Furniture | 215 |  |  | 202 |  |  | 5 years
Property, plant and equipment, gross | 6,431 |  |  | 6,427 |  |  |
Accumulated depreciation | (5,095) |  |  | (5,075) |  |  |
Property, plant and equipment, net | $ | 1,336 |  |  | $ | 1,352 |  |  |
Depreciation expense for the three months ended March 31, 2024 and 2023 was less than $0.1 million for each period.

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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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