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INCOME TAXES (Deferred) (Details) - USD ($) $ in Thousands | 2 Months Ended | 10 Months Ended | 12 Months Ended
--- | --- | --- | ---
Feb. 28, 2017 | Dec. 31, 2017 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Deferred tax assets: |  |  |  |  |
Accrued expenses |  | $ 36,843 | $ 36,843 | $ 53,366 |
Pension liabilities |  | 4,413 | 4,413 | 4,869 |
Postretirement liabilities other than pensions |  | 6,236 | 6,236 | 9,903 |
Share-based compensation |  | 4,466 | 4,466 | 7,119 |
Federal and state net operating loss carryforwards |  | 1,781 | 1,781 | 2,229 |
Other |  | 1,508 | 1,508 | 1,856 |
Total deferred tax assets |  | 55,247 | 55,247 | 79,342 |
Valuation allowance |  | (844) | (844) | (293) |
Total deferred tax assets, net of valuation allowance |  | 54,403 | 54,403 | 79,049 |
Deferred tax liabilities: |  |  |  |  |
Amortization, depreciation, and basis differences for property, plant and equipment, and other long-lived assets |  | 73,725 | 73,725 | 95,248 |
Intangibles |  | 14,573 | 14,573 | 24,715 |
Revenue recognition |  | 6,172 | 6,172 | 5,679 |
Prepaid expenses |  | 3,125 | 3,125 | 5,109 |
Total deferred tax liabilities |  | 97,595 | 97,595 | 130,751 |
Net deferred tax liabilities |  | $ (43,192) | $ (43,192) | $ (51,702) |
Statutory federal rate (as a percent) | 35.00% | 32.74% | 35.00% | 35.00% | 35.00%
Federal statutory tax rate used to calculate provisional effect of the Tax Reform Act in the period of enactment (as a percent) |  |  | 21.00% |  |

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