XML 68 R54.htm IDEA: XBRL DOCUMENT v3.8.0.1
Property and Equipment (Detail) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Property, Plant and Equipment [Line Items]    
Property and Equipment, gross $ 644,231 $ 546,010
Less: Accumulated depreciation and amortization (205,637) (171,163)
Property and Equipment, net 438,594 374,847
Land [Member]    
Property, Plant and Equipment [Line Items]    
Property and Equipment, gross 24,708 9,855
Building And Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property and Equipment, gross 36,269 35,267
Leasehold Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property and Equipment, gross 5,016 4,419
Computer Equipment and Software [Member]    
Property, Plant and Equipment [Line Items]    
Property and Equipment, gross 91,302 77,887
Furniture And Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property and Equipment, gross 13,852 13,260
Transportation Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property and Equipment, gross 472,634 $ 405,322
Construction In Progress [Member]    
Property, Plant and Equipment [Line Items]    
Property and Equipment, gross $ 450