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Property, Plant and Equipment
12 Months Ended
Dec. 31, 2021
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment Property, Plant and Equipment
 
Property, plant and equipment, net, at December 31 consisted of:
 
20212020
Land$18,476 $19,182 
Buildings187,012 194,936 
Machinery and equipment699,407 696,260 
904,895 910,378 
Less accumulated depreciation(563,433)(539,431)
$341,462 $370,947 
Depreciation expense was $47,600, $46,590 and $47,552 during 2021, 2020 and 2019, respectively.