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Employee Post-Retirement Benefits (Details) - USD ($)
 6 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Employee post-retirement benefits (Textual)    
Defined contribution plan, description The Company offers a defined contribution plan to eligible employees which consists of two parts: (i) the first part, paid by the Company, is 20% of the employee’s compensation from the prior year and (ii) the second part, paid by the employee, is 8% of the employee’s compensation.  
Employment benefits contributions amount $ 300,000 $ 300,000