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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, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Cash and Cash Equivalents, Policy
Cash and Cash Equivalents
We consider all highly liquid investments purchased with an original maturity of three months or less to be cash equivalents.
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 improvements
15 to 40
Furniture and fixtures
5 to 10
Machinery and equipment
3 to 15
Automobiles
5 to 70
Property, plant and equipment is comprised of the following at December 31, 2018 and 2019 (in thousands):
 
December 31, 2018
 
December 31, 2019
Land
$
81,012

 
$
84,608

Buildings and improvements
223,646

 
242,641

Furniture, equipment and automobiles
81,125

 
88,046

Property, plant and equipment, at cost
385,783

 
415,295

Less: accumulated depreciation
(124,945
)
 
(136,095
)
Property, plant and equipment, net
$
260,838

 
$
279,200