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Property, Plant and Equipment
 12 Months Ended
Dec. 30, 2022
Property, Plant and Equipment [Abstract]  
Property Plant and Equipment Property, Plant and Equipment
Property, plant and equipment were as follows (in thousands):
20222021
Land and improvements$65,066 $42,195 
Buildings and improvements376,115 280,947 
Manufacturing equipment439,109 384,617 
Office, warehouse and automotive equipment59,988 61,994 
Additions in progress126,198 105,520 
Total property, plant and equipment1,066,476 875,273 
Accumulated depreciation(458,867)(424,212)
Net property, plant and equipment$607,609 $451,061 

Depreciation expense was $46.0 million in 2022, $40.0 million in 2021 and $38.0 million in 2020.