Income Tax - Reconciliation between Statutory Rates and Effective Tax Rates (Detail) |
12 Months Ended | ||
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Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
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| Effective Income Tax Rate Reconciliation, Percent [Abstract] | |||
| Federal statutory income tax rate | 35.00% | 35.00% | 35.00% |
| Share based compensation | (8.00%) | (373.00%) | |
| Equity method investments | (83.00%) | (847.00%) | 5.00% |
| Other | 6.00% | 9.00% | |
| Valuation allowance | 49.00% | 1176.00% | (41.00%) |
| TCJA rate revaluation adjustment | 1.00% | ||
| Effective tax rate | (1.00%) | ||
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- Definition Effective Income Tax Rate Reconciliation, Deductions, Share-based Compensation Cost, Percent No definition available.
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- Definition Effective income tax rate reconciliation equity method investments earnings losses. No definition available.
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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the income tax rates. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Percentage of the difference, between reported income tax expense (benefit) and the expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, that is attributable to tax exempt income, equity in earnings (loss) of an unconsolidated subsidiary, minority interest income (expense), tax holiday, disposition of a business, disposition of an asset, repatriation of foreign earnings, repatriation of foreign earnings jobs creation act of 2004, change in enacted tax rate, prior year income taxes, change in deferred tax asset valuation allowance, and other adjustments. No definition available.
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