Quarterly report pursuant to Section 13 or 15(d)

Significant Accounting Policies - Disaggregated Revenue (Details)

v3.20.1
Significant Accounting Policies - Disaggregated Revenue (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Disaggregation of Revenue [Line Items]    
Revenue from operations $ 987,364 $ 990,782
LTL Service Revenue [Member]    
Disaggregation of Revenue [Line Items]    
Revenue from operations 974,431 976,563
Other Service Revenue [Member]    
Disaggregation of Revenue [Line Items]    
Revenue from operations $ 12,933 $ 14,219