XML 36 R72.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Detail of Certain Balance Sheet Accounts - Property and Equipment (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Property, Plant and Equipment [Line Items]    
Property and equipment, gross   $ 2,368,472
Finance lease assets and rental purchase options (see Note 9) $ 14,162  
Property and equipment, gross 2,636,851  
Less — Accumulated depreciation and amortization (1,250,197)  
Less — Accumulated depreciation and amortization   (1,092,440)
Property and equipment, net of accumulated depreciation $ 1,386,654  
Property and equipment, net of accumulated depreciation   1,276,032
Minimum    
Property, Plant and Equipment [Line Items]    
Estimated useful lives 5 years  
Maximum    
Property, Plant and Equipment [Line Items]    
Estimated useful lives 20 years  
Land    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 67,560 61,305
Buildings and leasehold improvements    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 231,920 208,974
Buildings and leasehold improvements | Minimum    
Property, Plant and Equipment [Line Items]    
Estimated useful lives 5 years  
Buildings and leasehold improvements | Maximum    
Property, Plant and Equipment [Line Items]    
Estimated useful lives 30 years  
Operating equipment and vehicles    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 2,068,644 1,865,917
Operating equipment and vehicles | Minimum    
Property, Plant and Equipment [Line Items]    
Estimated useful lives 1 year  
Operating equipment and vehicles | Maximum    
Property, Plant and Equipment [Line Items]    
Estimated useful lives 25 years  
Office equipment, furniture and fixtures and information technology systems    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 228,329 212,769
Office equipment, furniture and fixtures and information technology systems | Minimum    
Property, Plant and Equipment [Line Items]    
Estimated useful lives 3 years  
Office equipment, furniture and fixtures and information technology systems | Maximum    
Property, Plant and Equipment [Line Items]    
Estimated useful lives 10 years  
Construction work in progress    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 26,236 $ 19,507