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Income Taxes (Details) - USD ($)
3 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Income Tax Disclosure [Abstract]    
Income tax expense $ 517,983 $ 1,316,352
Income tax expense, effective rates (as a percent) 15.60% 18.50%
Statutory federal tax rate 21.00% 21.00%