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Other Noncurrent Liabilities | 3 Months Ended
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Mar. 31, 2012
Other Noncurrent Liabilities [Abstract] |
Other Noncurrent Liabilities | 9. Other Noncurrent Liabilities The components of noncurrent liabilities as of March 31, 2012 and December 31, 2011 were:
|  | March 31, 2012 |  |  | December 31, 2011 |
|  | (In thousands) |
Pension and retiree medical obligations |  | $ | 89,186 |  |  | $ | 91,542 |
Liability for uncertain tax positions |  |  | 4,864 |  |  |  | 5,262 |
Deferred revenue |  |  | 3,063 |  |  |  | 3,198 |
Other |  |  | 15,207 |  |  |  | 15,844 |
Total other noncurrent liabilities |  | $ | 112,320 |  |  | $ | 115,846 |

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