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Income Taxes (Details) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Sep. 30, 2014
Income Taxes [Abstract] |  |  |
Effective tax rate (in hundredths) | 28.30% | 34.00% |
Federal statutory rate (in hundredths) | 35.00% |  |
Unrecognized tax benefits that would impact effective tax rate | $ 4,337 |  | $ 4,311
Total penalties and interest accrued | $ 2,060 |  | $ 2,135
United States - Federal [Member] |  |  |
Income Tax Contingency [Line Items] |  |  |
Years under examination | 2012 and forward |  |
United States - State [Member] |  |  |
Income Tax Contingency [Line Items] |  |  |
Years under examination | 2010 and forward |  |
Canada [Member] |  |  |
Income Tax Contingency [Line Items] |  |  |
Years under examination | 2009 and forward |  |
Europe [Member] |  |  |
Income Tax Contingency [Line Items] |  |  |
Years under examination | 2009 and forward |  |
United Kingdom [Member] |  |  |
Income Tax Contingency [Line Items] |  |  |
Years under examination | 2013 and forward |  |
Australia [Member] |  |  |
Income Tax Contingency [Line Items] |  |  |
Years under examination | 2010 and forward |  |
Asia [Member] |  |  |
Income Tax Contingency [Line Items] |  |  |
Years under examination | 2008 and forward |  |

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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. + 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 (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
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