Revenues - Narrative (Details)	9 Months Ended
	Sep. 30, 2020
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Contract payment period	15 days
Expected period to recognized unearned portion of revenue for freight services in transit	The Company expects to recognize the unearned portion of revenue for freight services in transit within one week of the reporting date.
Minimum
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Average transit time	2 days
Maximum
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Average transit time	7 days