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Basis of Presentation and Summary of Significant Accounting Policies Basis of Presentation and Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Property, Plant and Equipment Depreciation of property, plant and equipment (including equipment under finance leases) is computed based on the straight-line method over the following estimated useful lives of the assets: 
 Years
Buildings and improvements15 to 40
Furniture and fixtures5 to 10
Machinery and equipment3 to 15
Automobiles
5 to 70
Property, plant and equipment is comprised of the following (in thousands):
December 31, 2019December 31, 2020
Land$84,608 $82,615 
Buildings and improvements242,641 240,567 
Furniture, equipment and automobiles88,046 91,302 
Property, plant and equipment, at cost415,295 414,484 
Less: accumulated depreciation(136,095)(145,433)
Property, plant and equipment, net$279,200 $269,051