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Details of Certain Accounts | 6 Months Ended
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Jun. 30, 2025
Details of Certain Accounts |
Details of Certain Accounts | Note 3 — Details of Certain Accounts Other current assets consist of the following (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | June 30, | ​ | December 31,
​ |  | 2025 |  | 2024
Prepaids | ​ | $ | 21,681 |  | $ | 26,780
Income tax receivable | ​ | ​ | 28,523 | ​ | ​ | 2,635
Contract assets (Note 8) | ​ | ​ | 13,204 | ​ | ​ | 12,221
Deferred costs (Note 8) | ​ |  | 41,107 |  | ​ | 31,874
Other | ​ |  | 8,220 |  | ​ | 9,512
Total other current assets | ​ | $ | 112,735 |  | $ | 83,022
​ Other assets, net consist of the following (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | June 30, | ​ | December 31,
​ |  | 2025 |  | 2024
Prepaid charter (1) | ​ | $ | 12,544 |  | $ | 12,544
Deferred costs (Note 8) | ​ | ​ | 2,273 |  | ​ | 5,348
Other receivable (2) | ​ |  | 26,030 |  | ​ | 24,827
Intangible assets with finite lives, net | ​ |  | 3,507 |  | ​ | 3,630
Other | ​ |  | 1,681 |  | ​ | 1,829
Total other assets, net | ​ | $ | 46,035 |  | $ | 48,178
(1) | Represents prepayments to the owner of the Siem Helix 1 and the Siem Helix 2, which may be used to offset certain payment obligations associated with the vessels at the end of their respective charter term.
(2) | Represents the present value of receivables for P&A work to be performed by us on Droshky oil and gas properties we acquired from Marathon Oil Corporation in 2019.
​ Accrued liabilities consist of the following (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | June 30, | ​ | December 31,
​ |  | 2025 |  | 2024
Accrued payroll and related benefits | ​ | $ | 33,012 |  | $ | 49,521
Accrued interest | ​ | ​ | 10,196 | ​ | ​ | 10,278
Deferred revenue (Note 8) | ​ |  | 38,630 |  | ​ | 14,914
Other | ​ |  | 22,934 |  | ​ | 15,742
Total accrued liabilities | ​ | $ | 104,772 |  | $ | 90,455
​ Other non-current liabilities consist of the following (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | June 30, | ​ | December 31,
​ |  | 2025 |  | 2024
Deferred revenue (Note 8) | ​ | $ | — |  | $ | 699
Asset retirement obligations (Note 12) | ​ | ​ | 65,794 |  | ​ | 62,947
Other | ​ |  | 2,974 |  | ​ | 3,325
Total other non-current liabilities | ​ | $ | 68,768 |  | $ | 66,971
​

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- Definition The entire disclosure for supplemental balance sheet disclosures, including descriptions and amounts for assets, liabilities, and equity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/210/tableOfContent + Details
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