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Income Taxes (Textual) (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2013 | Dec. 31, 2013
Income Tax Contingency [Line Items] |  |  |  |
Additions to valuation allowance | $ 11,460 | $ 3,900 | $ 5,850 |
Undistributed earnings of foreign subsidiaries | 900 |  |  |
Unrecognized tax benefits that would impact effective tax rate | 1,800 |  |  |
Unrecognized tax benefits, income tax penalties and interest expense | 300 | $ 400 | $ 500 |
Unrecognized tax benefits, income tax penalties and interest accrued | $ 1,800 |  |  | $ 1,600
Minimum |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Number of years open for tax examinations | 3 years |  |  |
Maximum |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Number of years open for tax examinations | 5 years |  |  |
Federal |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Net operating loss carryforwards | $ 16,900 |  |  |
Foreign Tax Authority |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Net operating loss carryforwards | 37,800 |  |  |
Tax credits | 3,600 |  |  |
State Jurisdiction |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Net operating loss carryforwards | $ 11,400 |  |  |

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- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319 + Details
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- Definition The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Carryforwards -URI http://asc.fasb.org/extlink&oid=6506874 + Details
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