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PROPERTY, PLANT AND EQUIPMENT, NET | 3 Months Ended
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Mar. 31, 2022
Property, Plant and Equipment [Abstract] |
PROPERTY, PLANT AND EQUIPMENT | PROPERTY, PLANT AND EQUIPMENT, NET Property, plant and equipment, net consisted of the following:
| March 31, 2022 |  | December 31, 2021
| (In thousands)
Machinery and equipment | $ | 2,076 |  |  | $ | 2,077 |
Furniture and fixtures | 1,049 |  |  | 1,036 |
Computer hardware and software | 635 |  |  | 614 |
Leasehold improvements | 1,029 |  |  | 1,034 |
| 4,789 |  |  | 4,761 |
Accumulated depreciation and amortization | (904) |  |  | (578) |
Property, plant and equipment, net | $ | 3,885 |  |  | $ | 4,183 |
Total depreciation and amortization expense in the consolidated statements of operations was $335,000 and $35,000 for the three months ended March 31, 2022 and 2021, respectively. Our Intellectual Property Operations and parent company include depreciation and amortization in general and administrative expenses, and our Industrial Operations allocates depreciation and amortization to all applicable operating expense categories.

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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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