Income Taxes (Details) - USD ($) |
3 Months Ended | 9 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|
Sep. 30, 2018 |
Sep. 30, 2017 |
Sep. 30, 2018 |
Sep. 30, 2017 |
Dec. 31, 2017 |
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| Income Tax Disclosure [Abstract] | |||||
| Income tax provision (benefit) | $ (2,852,000) | $ (4,153,000) | $ (1,865,000) | $ (10,993,000) | |
| Unrecognized tax benefits | 8,400,000 | 8,400,000 | $ 8,700,000 | ||
| Unrecognized tax benefits, income tax penalties and interest accrued | $ 6,100,000 | $ 6,100,000 | 6,500,000 | ||
| Income Tax Contingency [Line Items] | |||||
| Income tax benefit due to the Tax Act | 4,600,000 | ||||
| Impact due to repatriation charge | 0 | ||||
| Repatriation charge | $ 17,200,000 | ||||
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- Definition Tax Cuts and Jobs Act, Change in Tax Rate, Deferred Tax Liability, Income Tax Benefit No definition available.
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- Definition Tax Cuts and Jobs Act, Income Tax Expense (Benefit) No definition available.
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- Definition Tax Cuts and Jobs Act, Transition Tax for Accumulated Foreign Earnings, Income Tax Expense No definition available.
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- References 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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- Definition Amount of unrecognized tax benefits. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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