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Income Taxes (Details)
3 Months Ended 6 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Dec. 31, 2014
Mar. 31, 2016
Mar. 31, 2015
Income Taxes [Abstract]          
Effective tax rate 38.00% (12.00%) 31.00% 40.00% 29.00%