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Property And Equipment | 12 Months Ended
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Dec. 31, 2023
Property, Plant and Equipment [Abstract] |
Property And Equipment | Note 5 — Property and Equipment The following is a summary of the gross components of property and equipment (dollars in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ | ​ | December 31,
​ | ​ | Estimated Useful Life |  | 2023 |  | 2022
Vessels |  | 15 to 30 years | ​ | $ | 2,406,089 | ​ | $ | 2,371,084
Systems and equipment | ​ | 5 to 15 years | ​ | ​ | 337,913 | ​ | ​ | 306,316
ROVs and trenchers |  | 5 to 10 years | ​ |  | 252,753 | ​ |  | 262,763
Buildings and other |  | 5 to 39 years | ​ |  | 81,816 | ​ |  | 76,149
Total property and equipment | ​ | ​ | ​ | $ | 3,078,571 | ​ | $ | 3,016,312
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- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 360 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//360/tableOfContent Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 6 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480321/958-360-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480321/958-360-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 7 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480321/958-360-50-7 + Details
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