Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Details)

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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