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Income Taxes (Details)
3 Months Ended 6 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Income Tax Disclosure [Abstract]        
Federal statutory income tax rate     35.00% 35.00%
Effective income tax rate 29.00% 28.00% 33.00% 30.00%