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Properties And Equipment (Tables)
 12 Months Ended
Dec. 31, 2017
Properties And Equipment [Abstract]  
Schedule of Properties and Equipment



 

 

 

 

 



 

December 31,



 

2017

 

 

2016

Land

$

 7,108 

 

$

 7,098 

Buildings and building improvements

 

 85,570 

 

 

 79,814 

Transportation equipment

 

 47,243 

 

 

 33,895 

Machinery and equipment

 

 99,234 

 

 

 89,346 

Computer software

 

 47,840 

 

 

 45,079 

Furniture and fixtures

 

 74,191 

 

 

 71,781 

Projects under development

 

 11,882 

 

 

 5,579 

Total properties and equipment

 

 373,068 

 

 

 332,592 

Less accumulated depreciation

 

 (230,034)

 

 

 (211,290)

Net properties and equipment

$

 143,034 

 

$

 121,302