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Property, Plant and Equipment and Inventory
 9 Months Ended
Sep. 30, 2022
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment and Inventory Property, Plant and Equipment and Inventory
Property, plant and equipment
Property, plant and equipment is comprised of the following at September 30, 2022 and December 31, 2021 (in thousands):
September 30, 2022December 31, 2021
Machinery and equipment$243,226 $233,840 
Furniture, fixtures and other63,941 55,165 
Leasehold improvements67,278 60,970 
Buildings and land13,376 13,345 
Construction in process22,981 15,340 
410,802 378,660 
Less: accumulated depreciation(217,053)(192,183)
Total$193,749 $186,477 
Depreciation expense was $11.3 million and $32.6 million for the three and nine months ended September 30, 2022, respectively and $10.4 million and $28.9 million for the three and nine months ended September 30, 2021, respectively.
Inventory
Inventory is comprised of the following at September 30, 2022 and December 31, 2021 (in thousands):
September 30, 2022December 31, 2021
Raw materials $115,981 $107,307 
Work-in-process31,997 29,032 
Finished goods605,923 457,274 
Less: obsolescence reserve(27,999)(27,870)
Total$725,902 $565,743