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Property and Equipment (Tables)
12 Months Ended
Dec. 31, 2019
Property, Plant and Equipment [Abstract]  
Schedule of Property and Equipment
Property and equipment consisted of the following (in thousands):
 
As of December 31,
 
 
2019
   
2018
 
Land
  $
 108
    $
—  
 
Buildings
   
3,901
     
—  
 
Leasehold improvements
   
7,748
     
6,717
 
Furniture, fixtures and equipment
   
49,199
     
38,369
 
Vehicles and equipment
   
203,310
     
177,969
 
                 
   
264,266
     
223,055
 
Less: accumulated depreciation and amortization
   
(157,856
   
(132,938
)
                 
  $
 106,410
    $
90,117
 
                 
Schedule of Depreciation and Amortization Expense on Property and Equipment, by Income Statement Category
We recorded the following depreciation and amortization expense on our property and equipment, by income statement category (in thousands):
 
As of December 31,
 
 
2019
   
2018
   
2017
 
Cost of sales
  $
36,922
    $
31,526
    $
26,731
 
Administrative
   
1,939
     
1,779
     
1,554