Quarterly report pursuant to Section 13 or 15(d)

Significant Accounting Policies - Disaggregated Revenue (Details)

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Significant Accounting Policies - Disaggregated Revenue (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Disaggregation of Revenue [Line Items]    
Revenue from operations $ 1,497,280 $ 1,126,515
LTL Service Revenue [Member]    
Disaggregation of Revenue [Line Items]    
Revenue from operations 1,475,781 1,109,622
Other Service Revenue [Member]    
Disaggregation of Revenue [Line Items]    
Revenue from operations $ 21,499 $ 16,893