| Income Tax Disclosure [Abstract] | Period [Axis] |
|---|
2016-01-01 - 2016-12-31 |
|---|
Income Tax Disclosure [Abstract] | |
Schedule of Components of Income Tax Expense (Benefit) | Income tax expense (benefit) included the following: | | | | | | | | | | | | | | Year Ended December 31, | | 2016 | | 2015 | | 2014 | Current: | | | | | | Federal | $ | (44,925 | ) | | $ | 44,694 |
| | $ | 15,171 |
| State | 786 |
| | (2,318 | ) | | 1,781 |
| Total current | $ | (44,139 | ) | | $ | 42,376 |
| | $ | 16,952 |
| Deferred: | | | | | | Federal | $ | 2,630 |
| | $ | 3,360 |
| | $ | 7,176 |
| State | (5,280 | ) | | 2,546 |
| | (1,215 | ) | Total deferred | (2,650 | ) | | 5,906 |
| | 5,961 |
| Income tax expense (benefit) | $ | (46,789 | ) | | $ | 48,282 |
| | $ | 22,913 |
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Schedule of Effective Income Tax Rate Reconciliation | A reconciliation between the income tax expense (benefit) computed on pre-tax income (loss) at the statutory federal rate and the actual provision for income tax expense (benefit) is as follows: | | | | | | | | | | | | | | Year Ended December 31, | | 2016 | | 2015 | | 2014 | Computed expected tax expense (benefit) | $ | (44,318 | ) | | $ | 45,734 |
| | $ | 32,474 |
| State and local income taxes, net of federal benefit | (5,119 | ) | | 1,604 |
| | 532 |
| Non-controlling interest | (1,393 | ) | | (10,272 | ) | | (11,097 | ) | Changes in non-deductible goodwill | — |
| | 13,660 |
| | 1,411 |
| Other, net | 4,041 |
| | (2,444 | ) | | (407 | ) | Income tax expense (benefit) | $ | (46,789 | ) | | $ | 48,282 |
| | $ | 22,913 |
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Schedule of Deferred Tax Assets and Liabilities | The following table sets forth the tax effects of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities: | | | | | | | | | | As of December 31, | | 2016 | | 2015 | Deferred income tax assets: | | | | Accounts receivable, allowance | $ | 197 |
| | $ | 198 |
| Inventories | 8,273 |
| | 9,530 |
| Accrued liabilities and other | 1,564 |
| | 1,605 |
| Post-retirement benefits | 16,623 |
| | 18,437 |
| Derivative instruments designated as cash flow hedges | 721 |
| | 800 |
| Non-current accrued liabilities and other | 20,970 |
| | 24,383 |
| Net operating loss carryover | 23,923 |
| | 21,212 |
| Tax credits | 1,141 |
| | 1,150 |
| Other | 6,999 |
| | 4,332 |
| Deferred income tax assets | $ | 80,411 |
| | $ | 81,647 |
| Deferred income tax liabilities: | | | | Deferred gain on the Offering of the Partnership | $ | 50,115 |
| | $ | 50,178 |
| Deferred charges | 358 |
| | 401 |
| Unrealized gains | (1,208 | ) | | 4,645 |
| Property, plant and equipment | 369,406 |
| | 370,225 |
| Other non-current | 16,233 |
| | 11,631 |
| Intangibles | 12,506 |
| | 11,361 |
| Deferred income tax liabilities | $ | 447,410 |
| | $ | 448,441 |
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