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Income Taxes (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended | 24 Months Ended
--- | --- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2013
Income Tax Examination [Line Items] |  |  |  |
U.S. federal income tax rate | 35.00% | 35.00% | 35.00% |
Net current deferred income tax assets | $ 0 | $ 28,426 |  |
Net non-current deferred tax assets |  | 16,800 |  |
Net non-current deferred tax liabilities | 57,400 | 28,200 |  |
Non-cash charge | 73,400 |  |  |
Deferred Tax Assets, Operating Loss Carryforwards | 74,600 |  |  |
Unrecognized tax benefits | 3,900 |  |  |
Unrecognized tax benefits that would have a favorable impact on effective tax rate |  | 3,100 |  |
Accrued interest and penalties | 500 | 700 | $ 600 | $ 600
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense |  |  |  | $ 300
Decrease in Unrecognized Tax Benefits is Reasonably Possible | 600 |  |  |
Effective Income Tax Rate Reconciliation, Tax Settlement, Foreign, Amount | $ 537,300 |  |  |
Prepaid Expenses and Other Current Assets [Member] |  |  |  |
Income Tax Examination [Line Items] |  |  |  |
Net current deferred income tax assets |  | 28,400 |  |
Accrued Income And Other Taxes [Member] |  |  |  |
Income Tax Examination [Line Items] |  |  |  |
Net current deferred tax liabilities |  | 7,200 |  |
Foreign Country [Member] |  |  |  |
Income Tax Examination [Line Items] |  |  |  |
Total foreign tax credit carryforwards |  | 19,700 |  |
Tax credit carryforwards, years | 7 years |  |  |
Operating loss carryforwards |  | $ 19,300 |  |
Domestic Tax Authority [Member] |  |  |  |
Income Tax Examination [Line Items] |  |  |  |
Deferred Tax Assets, Operating Loss Carryforwards | $ 62,000 |  |  |
Operating loss carryforwards | 178,800 |  |  |
State [Member] |  |  |  |
Income Tax Examination [Line Items] |  |  |  |
Operating loss carryforwards | 260,600 |  |  |
Successor [Member] |  |  |  |
Income Tax Examination [Line Items] |  |  |  |
Net non-current deferred tax assets | 15,327 |  |  |
Net non-current deferred tax liabilities | 57,430 |  |  |
Total foreign tax credit carryforwards | 115,163 |  |  |
Unrecognized tax benefits | $ 3,921 |  |  |

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