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Equity Instruments (Details Textual) - USD ($)
3 Months Ended
Sep. 30, 2018
Jun. 02, 2015
Unrecognized expense share-based compensation expense $ 2,861,000  
Weighted-average period 8 years 4 months 17 days  
Employee Stock Option [Member]    
Unrecognized expense share-based compensation expense $ 95,000  
Weighted-average period 9 months 7 days  
Restricted Stock [Member]    
Shares available for grant 2,961,863  
Restricted stock issued 1,540  
Vesting expiry date, description July 2026  
Unrecognized expense share-based compensation expense $ 1,546,000  
Weighted-average period 7 years 9 months 11 days  
Expense related to awards $ 50,000  
Vesting period 10 years  
Two Thousand Fifteen Stock Option And Incentive Plan [Member]    
Aggregate shares of common stock   3,000,000
Unrecognized expense share-based compensation expense $ 1,315,000  
Weighted-average period 9 years 1 month 6 days  
Unrecognized share-based compensation expense $ 36,000