Segment Reporting - Schedule of Identifiable Assets by Industry Segment (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Segment Reconciliation [Abstract]
Total assets	$ 366,709	$ 361,334
Operating segments | Crude oil marketing
Segment Reconciliation [Abstract]
Total assets	190,696	185,285
Operating segments | Trans-portation
Segment Reconciliation [Abstract]
Total assets	54,798	57,653
Operating segments | Pipeline and storage
Segment Reconciliation [Abstract]
Total assets	25,142	25,027
Operating segments | Logistics and repurposing
Segment Reconciliation [Abstract]
Total assets	41,679	43,258
Cash and other
Segment Reconciliation [Abstract]
Total assets	$ 54,394	$ 50,111