Income Taxes - Additional Information (Details) - USD ($) |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2018 |
Jun. 30, 2017 |
Jun. 30, 2018 |
Jun. 30, 2017 |
Dec. 31, 2017 |
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| Income Tax Expense (Benefit), Continuing Operations [Abstract] | |||||
| Income tax expense (benefit) | $ 112,000 | $ (8,975,000) | $ 221,000 | $ (16,563,000) | |
| Current tax expense | 0 | ||||
| Income tax refund received | 0 | 0 | |||
| Cash paid for income taxes | 0 | $ 0 | |||
| Current income taxes receivable | 65,240,000 | 65,240,000 | $ 13,006,000 | ||
| Non-current income taxes receivable | 52,097,000 | ||||
| Valuation allowance | $ 158,100,000 | $ 158,100,000 | $ 171,500,000 | ||
| Minimum | |||||
| Income Tax Expense (Benefit), Continuing Operations [Abstract] | |||||
| Tax years under examination | 2013 | ||||
| Maximum | |||||
| Income Tax Expense (Benefit), Continuing Operations [Abstract] | |||||
| Tax years under examination | 2017 | ||||
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- Definition Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Tax year being audited in the income tax examination, in CCYY format. No definition available.
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Carrying amount due within one year of the balance sheet date (or one operating cycle, if longer) from tax authorities as of the balance sheet date representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Carrying amount due after one year of the balance sheet date (or one operating cycle, if longer) from tax authorities as of the balance sheet date representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The amount of cash received during the period as refunds for the overpayment of taxes. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Details
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- Details
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