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Property, Plant and Equipment
 12 Months Ended
Dec. 31, 2022
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment

6.       Property, Plant and Equipment

 

Property, plant and equipment consist of the following:

 

December 31,  2022   2021 
         
Land and improvements  $2,826   $2,686 
Buildings and improvements   72,788    62,781 
Machinery and equipment   314,032    302,241 
Dies and tools   57,480    53,574 
Property, plant and equipment   447,126    421,282 
Less allowances for depreciation   (370,273)   (347,651)
Net property, plant and equipment  $76,853   $73,631 

 

Depreciation expense totaled $24.4 million, $25.8 million, and $27.3 million in 2022, 2021, and 2020, respectively.