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Income Taxes (Tables) | 12 Months Ended
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Sep. 30, 2017
Income Tax Disclosure [Abstract] |
Summary Of Income (Loss) Before Income Taxes | Our income (loss) before income taxes consisted of the following:
| Year ended September 30,
| 2017 |  | 2016 |  | 2015
| (in thousands)
Domestic | $ | (140,150 | ) |  | $ | (156,166 | ) |  | $ | (110,867 | )
Foreign | 138,744 |  |  | 88,974 |  |  | 137,392 |
Total income (loss) before income taxes | $ | (1,406 | ) |  | $ | (67,192 | ) |  | $ | 26,525 |
Schedule Of Provision For (Benefit From) Income Taxes | Our (benefit) provision for income taxes consisted of the following:
| Year ended September 30,
| 2017 |  | 2016 |  | 2015
| (in thousands)
Current: |  |  |  |  |
Federal | $ | 2,423 |  |  | $ | 2,417 |  |  | $ | 3,907 |
State | 340 |  |  | 571 |  |  | 599 |
Foreign | 17,881 |  |  | 28,467 |  |  | 23,823 |
| 20,644 |  |  | 31,455 |  |  | 28,329 |
Deferred: |  |  |  |  |
Federal | 4,911 |  |  | 965 |  |  | (20,809 | )
State | 877 |  |  | 515 |  |  | (566 | )
Foreign | (34,077 | ) |  | (45,662 | ) |  | (27,986 | )
| (28,289 | ) |  | (44,182 | ) |  | (49,361 | )
Total provision (benefit) for income taxes | $ | (7,645 | ) |  | $ | (12,727 | ) |  | $ | (21,032 | )
Summary Of Federal Income Tax Rate And Effective Income Tax Rate | Taxes computed at the statutory federal income tax rates are reconciled to the provision (benefit) for income taxes as follows (in thousands):
| Year ended September 30,
| 2017 |  | 2016 |  | 2015
Statutory federal income tax rate | $ | (492 | ) |  | (35 | )% |  | $ | (23,517 | ) |  | (35 | )% |  | $ | 9,284 |  |  | 35 | %
Change in valuation allowance | 17,334 |  |  | 1,233 | % |  | 37,996 |  |  | 57 | % |  | 16,718 |  |  | 63 | %
State income taxes, net of federal tax benefit | 627 |  |  | 45 | % |  | (82 | ) |  | — | % |  | 1,788 |  |  | 7 | %
Federal research and development credits | (2,182 | ) |  | (155 | )% |  | (5,981 | ) |  | (9 | )% |  | (2,097 | ) |  | (8 | )%
Resolution of uncertain tax positions | (3,840 | ) |  | (273 | )% |  | — |  |  | — | % |  | (2,991 | ) |  | (11 | )%
Foreign rate differences | (27,932 | ) |  | (1,987 | )% |  | (27,513 | ) |  | (41 | )% |  | (56,375 | ) |  | (213 | )%
Foreign tax on U.S. provision | 2,737 |  |  | 195 | % |  | 1,987 |  |  | 3 | % |  | 3,764 |  |  | 14 | %
U.S. permanent items | 6,030 |  |  | 429 | % |  | 2,886 |  |  | 4 | % |  | 9,062 |  |  | 34 | %
Other, net | 73 |  |  | 4 | % |  | 1,497 |  |  | 2 | % |  | (185 | ) |  | — | %
Benefit for income taxes | $ | (7,645 | ) |  | (544 | )% |  | $ | (12,727 | ) |  | (19 | )% |  | $ | (21,032 | ) |  | (79 | )%
Schedule Of Deferred Tax Assets And Liabilities | The significant temporary differences that created deferred tax assets and liabilities are shown below:
| September 30,
| 2017 |  | 2016
| (in thousands)
Deferred tax assets: |  |  |
Net operating loss carryforwards | $ | 143,793 |  |  | $ | 100,033 |
Foreign tax credits | 21,099 |  |  | 18,041 |
Capitalized research and development expense | 13,044 |  |  | 22,504 |
Pension benefits | 12,107 |  |  | 14,348 |
Deferred revenue | 59,022 |  |  | 65,145 |
Stock-based compensation | 25,360 |  |  | 19,846 |
Other reserves not currently deductible | 16,905 |  |  | 25,993 |
Amortization of intangible assets | 78,351 |  |  | 54,069 |
Other tax credits | 42,652 |  |  | 41,381 |
Depreciation | 3,095 |  |  | 3,002 |
Capital loss carryforward | 33,535 |  |  | 8,019 |
Deferred interest | 11,666 |  |  | 7,622 |
Other | 15,849 |  |  | 14,778 |
Gross deferred tax assets | 476,478 |  |  | 394,781 |
Valuation allowance | (279,683 | ) |  | (235,503 | )
Total deferred tax assets | 196,795 |  |  | 159,278 |
Deferred tax liabilities: |  |  |
Acquired intangible assets not deductible | (70,570 | ) |  | (78,663 | )
Pension prepayments | (2,093 | ) |  | (542 | )
Deferred revenue | (6,214 | ) |  | (2,039 | )
U.S taxes on unremitted foreign earnings | (11,440 | ) |  | (67 | )
Other | (1,192 | ) |  | (2,025 | )
Total deferred tax liabilities | (91,509 | ) |  | (83,336 | )
Net deferred tax assets | $ | 105,286 |  |  | $ | 75,942 |
Summary Of Valuation Allowance | The changes to the valuation allowance were primarily due to the following:
| Year ended September 30,
| 2017 |  | 2016 |  | 2015
| (in millions)
Valuation allowance beginning of year | $ | 235.5 |  |  | $ | 198.2 |  |  | $ | 177.5 |
Net release of valuation allowance (1) | (9.1 | ) |  | (3.1 | ) |  | (18.7 | )
Net increase/decrease in deferred tax assets with a full valuation allowance | 53.3 |  |  | 39.8 |  |  | 39.4 |
Establish valuation allowance in foreign jurisdictions | — |  |  | 0.6 |  |  | — |
Valuation allowance end of year | $ | 279.7 |  |  | $ | 235.5 |  |  | $ | 198.2 |
(1) | In 2017 and 2016, this is attributable to the release in foreign jurisdictions. In 2015, this is attributable to a reduction in deferred tax assets associated with our U.S. pension plan
Schedule Of Unrecognized Tax Benefit |
| Year ended September 30,
Unrecognized tax benefits | 2017 |  | 2016 |  | 2015
| (in millions)
Unrecognized tax benefit beginning of year | $ | 15.5 |  |  | $ | 14.1 |  |  | $ | 15.0 |
Tax positions related to current year: |  |  |  |  |
Additions | 0.9 |  |  | 1.0 |  |  | 1.3 |
Tax positions related to prior years: |  |  |  |  |
Additions | 1.0 |  |  | 0.4 |  |  | 0.8 |
Reductions | (1.6 | ) |  | — |  |  | (3 | )
Settlements | (1.0 | ) |  | — |  |  | — |
Statute expirations | — |  |  | — |  |  | — |
Unrecognized tax benefit end of year | $ | 14.8 |  |  | $ | 15.5 |  |  | $ | 14.1 |
Summary Of Income Tax Examinations Years | As of September 30, 2017, we remained subject to examination in the following major tax jurisdictions for the tax years indicated:
Major Tax Jurisdiction |  | Open Years
United States |  | 2014 through 2017
Germany |  | 2011 through 2017
France |  | 2014 through 2017
Japan |  | 2012 through 2017
Ireland |  | 2013 through 2017

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- Definition Tabular disclosure for tax positions taken in the tax returns filed or to be filed for which it is more likely than not that the tax position will not be sustained upon examination by taxing authorities and other income tax contingencies. Includes, but is not limited to, interest and penalties, reconciliation of unrecognized tax benefits, unrecognized tax benefits that would affect the effective tax rate, tax years that remain subject to examination by tax jurisdictions, and information about positions for which it is reasonably possible that amounts unrecognized will significantly change within 12 months. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32840-109319 + Details
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