Income Taxes (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||||
|---|---|---|---|---|---|---|
Mar. 31, 2019 |
Dec. 31, 2018 |
Mar. 31, 2018 |
Mar. 31, 2019 |
Mar. 31, 2018 |
Sep. 30, 2018 |
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| Income Tax Disclosure [Abstract] | ||||||
| Income tax (provision) benefit | $ (165) | $ 2,212 | $ 440 | $ (23,015) | ||
| Federal statutory rate (as a percent) | 21.00% | |||||
| Tax expense repatriation of foreign earnings | $ 300 | |||||
| Unrecognized tax benefits | 14,473 | $ 14,473 | $ 14,827 | |||
| Unrecognized tax benefits that would impact effective tax rate | 10,365 | 10,365 | 10,718 | |||
| Decrease reasonably possible in next 12 months | 2,092 | 2,092 | ||||
| Total penalties and interest accrued | $ 2,686 | $ 2,686 | $ 2,229 | |||
| X | ||||||||||
- Definition Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Transition Tax For Accumulated Foreign Earnings, Provisional Income Tax Expense No definition available.
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- Definition Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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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- Definition The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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