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Property, Plant and Equipment
 12 Months Ended
Dec. 31, 2022
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment at December 31, 2022 and 2021 consists of the following:
(In thousands)20222021Estimated
useful lives in
years
Land$62,192 $24,000 
Buildings and improvements490,903 281,019 
5-35
Manufacturing equipment569,224 415,985 
5-10
Canisters and cylinders168,516 142,071 
3-12
Molds76,388 77,708 
3-5
Office furniture and lab equipment330,284 189,258 
3-8
Construction in progress465,923 177,161 
Total property, plant and equipment2,163,430 1,307,202 
Less accumulated depreciation770,093 653,104 
Property, plant and equipment, net$1,393,337 $654,098 
The table below sets forth the depreciation expense for the years ended December 31, 2022, 2021 and 2020:
(In thousands)202220212020
Depreciation expense$135,371 $90,311 $83,430