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INCOME TAXES (Details 2) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Deferred tax assets: |  |  |  |  |  |  |  |  |  |  |
Accrued expenses | $ 51,715 |  |  |  | $ 45,970 |  |  |  | $ 51,715 | $ 45,970 |
Pension liabilities | 34,163 |  |  |  | 35,529 |  |  |  | 34,163 | 35,529 |
Postretirement liabilities other than pensions | 7,127 |  |  |  | 6,701 |  |  |  | 7,127 | 6,701 |
Share-based compensation | 6,034 |  |  |  | 7,138 |  |  |  | 6,034 | 7,138 |
Federal and state net operating loss carryovers | 14,071 |  |  |  | 3,799 |  |  |  | 14,071 | 3,799 |
Other | 2,092 |  |  |  | 1,223 |  |  |  | 2,092 | 1,223 |
Total deferred tax assets | 115,202 |  |  |  | 100,360 |  |  |  | 115,202 | 100,360 |
Valuation allowance | (2,511) |  |  |  | (5,644) |  |  |  | (2,511) | (5,644) |
Total deferred tax assets, net of valuation allowance | 112,691 |  |  |  | 94,716 |  |  |  | 112,691 | 94,716 |
Deferred tax liabilities: |  |  |  |  |  |  |  |  |  |  |
Amortization, depreciation, and basis differences for property, plant and equipment and other long-lived assets | 73,558 |  |  |  | 71,755 |  |  |  | 73,558 | 71,755 |
Intangibles | 37,282 |  |  |  | 954 |  |  |  | 37,282 | 954 |
Revenue recognition | 4,268 |  |  |  | 3,013 |  |  |  | 4,268 | 3,013 |
Prepaid expenses | 3,647 |  |  |  | 3,368 |  |  |  | 3,647 | 3,368 |
Total deferred tax liabilities | 118,755 |  |  |  | 79,090 |  |  |  | 118,755 | 79,090 |
Net deferred tax assets (liabilities) | (6,064) |  |  |  | 15,626 |  |  |  | (6,064) | 15,626 |
Reconciliation between the effective income tax rate, as computed on income or loss before income taxes, and the statutory federal income tax rate |  |  |  |  |  |  |  |  |  |  |
Income tax provision (benefit) at the statutory federal rate |  |  |  |  |  |  |  |  | (5,947) | 3,323 | (18,829)
Federal income tax effects of: |  |  |  |  |  |  |  |  |  |  |
State income taxes |  |  |  |  |  |  |  |  | 352 | (316) | 976
Nondeductible expenses |  |  |  |  |  |  |  |  | 1,415 | 1,079 | 1,179
Life insurance proceeds and changes in cash surrender value |  |  |  |  |  |  |  |  | (752) | (906) | (882)
Dividends received deduction |  |  |  |  |  |  |  |  | (5) |  | (14)
Alternative fuel credit |  |  |  |  |  |  |  |  |  | (995) | (979)
Decrease in valuation allowances |  |  |  |  |  |  |  |  | (3,180) | (211) | (558)
Other |  |  |  |  |  |  |  |  | (539) | (182) | 520
Federal income tax provision (benefit) |  |  |  |  |  |  |  |  | (8,656) | 1,792 | (18,587)
State income tax provision (benefit) |  |  |  |  |  |  |  |  | (1,005) | 902 | (3,047)
Foreign income tax provision |  |  |  |  |  |  |  |  | 401 | 466 | 258
Income tax provision (benefit) | $ (4,387) | $ 5,258 | $ (5,757) | $ (4,374) | $ 530 | $ 6,808 | $ 3,169 | $ (7,346) | $ (9,260) | $ 3,160 | $ (21,376)
Effective tax (benefit) rate (as a percent) |  |  |  |  |  |  |  |  | (54.50%) | 33.30% | (39.70%)

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