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Common Stock, Preferred Stock and Dividends (Tables)
12 Months Ended
Jun. 30, 2018
Equity [Abstract]  
Schedule of preferred shares and common shares
     
2018
   
2017
               
2018
   
2017
 
As of June 30
   
Authorized Shares
   
Par value
   
Issued and outstanding shares
 
Preferred stock
        16,000,000           16,000,000         $ 0.0001                        
Common stock–Class A
        300,000,000           300,000,000         $ 0.0001           19,992,204           19,249,132    
Common stock–Class B
        30,000,000           30,000,000         $ 0.0001           20,365,504           20,626,836