Annual report pursuant to Section 13 and 15(d)

Property and Equipment (Details)

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Property and Equipment (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Property, Plant and Equipment      
Property, plant and equipment, gross $ 389,458 $ 312,223  
Less: Accumulated depreciation and property reserves (221,497) (205,102)  
Total Property Plant & Equipment, net 167,961 107,121  
Assets held for sale, excluded from property and equipment, net 900    
Depreciation expense 23,700 13,500 $ 11,200
Land and improvements      
Property, Plant and Equipment      
Property, plant and equipment, gross 7,649 7,846  
Buildings      
Property, Plant and Equipment      
Property, plant and equipment, gross 38,933 40,515  
Equipment      
Property, Plant and Equipment      
Property, plant and equipment, gross 115,261 96,580  
Computer hardware and software      
Property, Plant and Equipment      
Property, plant and equipment, gross 132,719 125,984  
Company vehicles      
Property, Plant and Equipment      
Property, plant and equipment, gross $ 94,896 $ 41,298