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PROPERTY, PLANT AND EQUIPMENT
 12 Months Ended
Dec. 31, 2023
Property, Plant and Equipment [Abstract]  
PROPERTY, PLANT AND EQUIPMENT PROPERTY, PLANT AND EQUIPMENT
The carrying value and estimated useful lives of property, plant and equipment are as follows:
December 31,
(In thousands)Estimated Useful Life20232022
Property, plant and equipment
Landn/a$4,716 $4,716 
Leasehold and building improvements(1)214,562 200,588 
Land improvements15 years6,729 6,417 
Buildings
30 - 40 years
290,777 288,941 
Computer equipment and computer software3 years168,131 142,896 
Machinery and equipment
3 - 10 years
290,294 246,344 
Furniture and fixtures
3 - 10 years
35,756 34,047 
Assets under constructionn/a104,592 68,398 
Property, plant and equipment, at cost1,115,557 992,347 
Accumulated depreciation(417,203)(307,591)
Property, plant and equipment, net$698,354 $684,756 
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(1)     Lesser of remaining lease term, building life, or estimated useful life.
At December 31, 2023, the Company had $104.6 million of assets under construction, which consisted of $53.2 million in machinery and equipment, $29.1 million of capitalized costs related to software projects, $15.7 million in leasehold and building improvements, and $6.6 million related to buildings. Depreciation will begin on these assets once they are placed into service upon completion.