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Accrued Liabilities (Tables) | 12 Months Ended
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Dec. 31, 2013
Accrued Liabilities |
Summary of accrued liabilities | Accrued liabilities consisted of the following (in thousands):
|  | December 31, |
|  | 2013 |  | 2012 |
Accrued salaries and other benefits |  | $ | 99,686 |  | $ | 94,026 |
Accrued income and other taxes |  | 77,882 |  | 106,804 |
Accrued warranty expense |  | 4,644 |  | 4,561 |
Accrued interest |  | 9,070 |  | 7,483 |
Interest rate swaps fair value |  | 3,374 |  | 3,873 |
Deferred income taxes |  | 1,331 |  | 1,430 |
Accrued start-up and commissioning expenses |  | 8,445 |  | 5,552 |
Accrued other liabilities |  | 74,517 |  | 47,257 |
Accrued liabilities |  | $ | 278,949 |  | $ | 270,986 |

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