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Income Taxes
6 Months Ended
Mar. 31, 2015
Income Tax Disclosure [Abstract]  
Income Taxes

13. Income Taxes

The United States statutory tax rate for the three and six months ended March 31, 2015 and 2014 was 35%. The Company’s effective tax rates for the three months ended March 31, 2015 and 2014 were 34.9% and 32.3%, respectively. The Company’s effective tax rates for the six months ended March 31, 2015 and 2014 were 35.2% and 32.0%, respectively. The lower effective tax rates for the periods ended March 31, 2014 primarily resulted from a manufacturers’/producers’ deduction available to U.S. manufacturers.