XML 112 R99.htm IDEA: XBRL DOCUMENT v3.8.0.1
OPERATING SEGMENT DATA - (Operating Expenses) (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
OPERATING EXPENSES                      
Salaries, wages, and benefits                 $ 1,367,433 $ 1,345,672 $ 1,297,129
Rents, purchased transportation, and other costs of services                 869,584 823,683 790,612
Fuel, supplies, and expenses                 304,126 270,138 292,039
Depreciation and amortization                 103,068 103,053 93,042
Other                 125,773 118,390 118,587
Restructuring costs         $ 10,300       2,963 10,313  
Total consolidated operating expenses $ 694,041 $ 719,931 $ 695,634 $ 663,341 $ 687,003 $ 693,553 $ 659,973 $ 630,720 $ 2,772,947 $ 2,671,249 $ 2,591,409