Business Segment Information (Narrative) (Details) $ in Thousands |
6 Months Ended | |
|---|---|---|
|
Jun. 30, 2026
USD ($)
segment
|
Jun. 30, 2025
USD ($)
|
|
| Segment Reporting [Abstract] | ||
| Number of reportable segments | segment | 3 | |
| Segment Reporting Information [Line Items] | ||
| Capital Expenditures | $ 67,622 | $ 93,817 |
| Costs incurred, percentage | 1 | 1 |
| Operating Segments | ||
| Segment Reporting Information [Line Items] | ||
| Capital Expenditures | $ 66,042 | $ 93,163 |
| Operating Segments | Offshore pipeline transportation | ||
| Segment Reporting Information [Line Items] | ||
| Capital Expenditures | 19,077 | 59,136 |
| Operating Segments | Marine transportation | ||
| Segment Reporting Information [Line Items] | ||
| Capital Expenditures | 39,401 | 29,452 |
| Operating Segments | Onshore transportation and services | ||
| Segment Reporting Information [Line Items] | ||
| Capital Expenditures | 7,564 | 4,575 |
| Other | ||
| Segment Reporting Information [Line Items] | ||
| Capital Expenditures | $ 1,580 | $ 654 |