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Income Taxes (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Sep. 30, 2017
Income Tax Disclosure [Abstract] |  |  |  |  |
Income tax expense (benefit) | $ 4,312 | $ 8,856 | $ (18,703) | $ 17,318 |
Blended rate (as a percent) |  |  | 24.50% |  |
Provisional tax benefit change in tax rate |  |  | $ 29,921 |  |
Tax benefit change in deferred tax assets |  |  | 38,010 |  |
Tax expense repatriation of foreign earnings |  |  | 8,089 |  |
Unrecognized tax benefits | 15,292 |  | 15,292 |  | $ 7,968
Unrecognized tax benefits that would impact effective tax rate | 11,183 |  | 11,183 |  | 7,968
Decrease reasonably possible in next 12 months | 3,525 |  | 3,525 |  |
Total penalties and interest accrued | $ 2,338 |  | $ 2,338 |  | $ 1,779

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- Definition Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (d)(3) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 + Details
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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