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PROPERTY, PLANT AND EQUIPMENT, NET
 3 Months Ended
Mar. 31, 2024
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, 2024December 31, 2023
(In thousands)
Machinery and equipment$3,038 $3,035 
Furniture and fixtures395 395 
Computer hardware and software277 312 
Leasehold improvements1,018 1,018 
4,728 4,760 
Accumulated depreciation and amortization(2,638)(2,404)
Property, plant and equipment, net$2,090 $2,356 
Total depreciation and amortization expense in the consolidated statements of operations was $280,000 and $347,000 for the three months ended March 31, 2024 and 2023, respectively. Our Intellectual Property Operations and parent company include depreciation and amortization in general and administrative expenses. For the three months ended March 31, 2024 and 2023, our Industrial Operations allocated depreciation and amortization, totaling $252,000 and $313,000 to all applicable operating expense categories, including cost of sales of $106,000 and $111,000, respectively.