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Revenues - Narrative (Details) | 12 Months Ended
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Dec. 31, 2021
Concentration Risk [Line Items] |
Payment period after invoice date | 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 |
Concentration Risk [Line Items] |
Average transit time to complete a rail shipment | 2 days
Maximum |
Concentration Risk [Line Items] |
Average transit time to complete a rail shipment | 8 days

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- Definition Description of timing for satisfying performance obligation in contract with customer. Includes, but is not limited to, as services are rendered, and upon shipment, delivery or completion of service. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045 + Details
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