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Income Taxes (Tables)
3 Months Ended
Sep. 30, 2017
Income Tax Disclosure [Abstract]  
Summary of the effective income tax rate

A summary of our effective income tax rate for the three months ended September 30, 2017 and 2016 is as follows:

 

   Three months ended
September 30,
 
   2017   2016 
Income before income taxes  $275,679   $405,696 
Income tax expense  $57,984   $265,200 
Effective income tax rate   21%   65%