Business Segment Information (Narrative) (Details) $ in Thousands |
3 Months Ended | |
|---|---|---|
|
Mar. 31, 2026
USD ($)
segment
|
Mar. 31, 2025
USD ($)
|
|
| Segment Reporting [Abstract] | ||
| Number of reportable segments | segment | 3 | |
| Segment Reporting Information [Line Items] | ||
| Capital Expenditures | $ 26,239 | $ 49,907 |
| Costs incurred, percentage | 1 | 1 |
| Operating Segments | ||
| Segment Reporting Information [Line Items] | ||
| Capital Expenditures | $ 25,435 | $ 49,480 |
| Operating Segments | Offshore pipeline transportation | ||
| Segment Reporting Information [Line Items] | ||
| Capital Expenditures | 6,295 | 29,314 |
| Operating Segments | Marine transportation | ||
| Segment Reporting Information [Line Items] | ||
| Capital Expenditures | 13,922 | 16,990 |
| Operating Segments | Onshore transportation and services | ||
| Segment Reporting Information [Line Items] | ||
| Capital Expenditures | 5,218 | 3,176 |
| Other | ||
| Segment Reporting Information [Line Items] | ||
| Capital Expenditures | $ 804 | $ 427 |