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Other Expense, Other Income and Non-Operating Other Income (Expense), net (Tables) | 9 Months Ended
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Sep. 30, 2012
Other Expense, Other Income and Non-Operating Other Income (Expense), net [Abstract] |
Other Expense, Other Income and Non-Operating Other Income, net |
|  | Nine Months Ended September 30, |  |  | Three Months Ended September 30, |
|  | 2012 |  |  | 2011 |  |  | 2012 |  |  | 2011 |
|  |  |  |  | (In Thousands) |  |  |  |
Other expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Losses on sales and disposals of property and equipment |  | $ | 667 |  |  | $ | 996 |  |  | $ | 116 |  |  | $ | 101 |
Losses on contractual obligations associated with carbon credits |  |  | 248 |  |  |  | 936 |  |  |  | 248 |  |  |  | — |
Miscellaneous expense (1) |  |  | 191 |  |  |  | 600 |  |  |  | 20 |  |  |  | 48 |
Total other expense |  | $ | 1,106 |  |  | $ | 2,532 |  |  | $ | 384 |  |  | $ | 149 |
Other income: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gains on carbon credits |  | $ | 248 |  |  | $ | 1,028 |  |  | $ | 248 |  |  | $ | (2 | )
Settlements of litigation and potential litigation (2) |  |  | — |  |  |  | 757 |  |  |  | — |  |  |  | — |
Miscellaneous income (1) |  |  | 589 |  |  |  | 250 |  |  |  | 241 |  |  |  | 60 |
Total other income |  | $ | 837 |  |  | $ | 2,035 |  |  | $ | 489 |  |  | $ | 58 |
Non-operating other income (expense), net: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest income |  | $ | 70 |  |  | $ | 61 |  |  | $ | 22 |  |  | $ | 20 |
Miscellaneous income (1) |  |  | 263 |  |  |  | — |  |  |  | — |  |  |  | — |
Miscellaneous expense (1) |  |  | (63 | ) |  |  | (58 | ) |  |  | (24 | ) |  |  | (22 | )
Total non-operating other income (expense), net |  | $ | 270 |  |  | $ | 3 |  |  | $ | (2 | ) |  | $ | (2 | )

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