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Details Of Certain Accounts (Accrued Liabilities) (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011
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Details Of Certain Accounts [Abstract] |  |  |  |
Accrued payroll and related benefits | $ 51,561 |  | $ 45,217 |
Current asset retirement obligations (Note 4) | 2,898 | [1] | 27,300 | [1]
Unearned revenue | 6,137 |  | 7,654 |
Billing in excess of cost | 6,445 | [2] | 28,839 | [2]
Accrued interest | 17,451 |  | 24,028 |
Hedging liability | 16,266 | [3] | 1,247 | [3]
Taxes payable excluding income tax payable | 5,164 |  | 3,748 |
Pipelay assets sale deposit (Note 2) | 50,000 | [4] |  |
Other | 5,592 |  | 8,079 |
Total accrued liabilities | $ 161,514 |  | $ 146,112 |
[1] | Reflects the substantial completion of the abandonment of the Camelot field (Note 3).
[2] | Decrease reflects fewer ongoing subsea construction projects using the percentage-of-completion method of accounting as a result of the expected sales of our remaining pipelay vessels.
[3] | Primarily reflects the fair value of oil commodity derivative contracts of $15.8 million at December 31, 2012 (Note 17). These contracts were settled in February 2013.
[4] | Reflects the cash deposit we received in association with the expected sales of our two remaining pipelay vessels, the Express and the Caesar, and other related pipelay equipment (Note 2), which is refundable in very limited circumstances. The sales of these vessels are scheduled to close and fund in two stages in 2013 following the completion of each vessel’s existing backlog of work.

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