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Details Of Certain Accounts (Tables) | 12 Months Ended
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Dec. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Schedule of other current assets | Other current assets consist of the following (in thousands):
| December 31,
| 2017 |  | 2016
Note receivable (1) | $ | — |  |  | $ | 10,000 |
Prepaids | 10,102 |  |  | 13,973 |
Deferred costs (2) | 27,204 |  |  | 7,971 |
Other | 4,462 |  |  | 5,444 |
Total other current assets | $ | 41,768 |  |  | $ | 37,388 |
(1) | Relates to the balance of the promissory note we received in connection with the sale of our former Ingleside spoolbase in January 2014. Interest on the note was payable quarterly at a rate of 6% per annum. In June 2017, we collected the remaining $10 million principal balance of this note receivable as well as accrued interest.
(2) | Primarily reflects deferred mobilization costs associated with certain long-term contracts, which are to be amortized within 12 months from the balance sheet date (Note 2).
Schedule of other assets, net | Other assets, net consist of the following (in thousands):
| December 31,
| 2017 |  | 2016
Note receivable, net (1) | $ | 3,758 |  |  | $ | 2,827 |
Prepaids | 7,666 |  |  | 6,418 |
Deferred dry dock costs, net (Note 2) | 12,368 |  |  | 14,766 |
Deferred costs (2) | 63,767 |  |  | 30,738 |
Charter fee deposit (3) | 12,544 |  |  | 12,544 |
Other | 5,102 |  |  | 5,256 |
Total other assets, net | $ | 105,205 |  |  | $ | 72,549 |
(1) | In 2016, we entered into an agreement with one of our customers to defer their payment obligations to June 30, 2018. On March 30, 2017, we entered into a new agreement with this customer in which we agreed to forgive all but $4.3 million of receivables due from the customer in exchange for its redeemable convertible bonds that approximated that amount. The bonds are redeemable by the customer at any time and the maturity date of the bonds is December 14, 2019. Interest at a rate of 5% per annum is payable annually on the bonds. The amount at December 31, 2017 reflected the fair value of the bonds as of that date (Note 16). The amount at December 31, 2016 was net of allowance of $4.2 million.
(2) | Primarily reflects deferred mobilization costs to be amortized after 12 months from the balance sheet date through the end of the applicable term of certain long-term contracts (Note 2).
(3) | Represents deposit to be used to reduce our final charter payments for the Siem Helix 2.
Schedule of accrued liabilities | Accrued liabilities consist of the following (in thousands):
| December 31,
| 2017 |  | 2016
Accrued payroll and related benefits | $ | 30,685 |  |  | $ | 20,705 |
Deferred revenue | 12,609 |  |  | 8,911 |
Derivative liability (Note 17) | 10,625 |  |  | 18,730 |
Other | 17,761 |  |  | 10,268 |
Total accrued liabilities | $ | 71,680 |  |  | $ | 58,614 |
Schedule of other non-current liabilities | Other non-current liabilities consist of the following (in thousands):
| December 31,
| 2017 |  | 2016
Investee losses in excess of investment (Note 5) | $ | 7,567 |  |  | $ | 10,238 |
Deferred gain on sale of property (Note 4) | 5,838 |  |  | 5,761 |
Deferred revenue | 8,744 |  |  | 8,598 |
Derivative liability (Note 17) | 8,150 |  |  | 20,191 |
Other | 10,391 |  |  | 8,197 |
Total other non-current liabilities | $ | 40,690 |  |  | $ | 52,985 |

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