Nature of Operations and Significant Accounting Policies (Details) mi in Thousands	Mar. 31, 2020 state mi
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Total number of rail route miles \| mi	20
Number of states rail network serves \| state	23

The number of states the entity operates in as of the balance sheet date.

No definition available.

Name:	us-gaap_NumberOfStatesInWhichEntityOperates
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant