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Capital Stock - Additional Information (Details) - USD ($)
3 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Capital stock, shares authorized 50,000,000   50,000,000 50,000,000
Capital stock, par value $ 0.01   $ 0.01 $ 0.01
Aggregate number of units issued (in shares) 2,400,000      
Aggregate number of units issued, per unit ($ per shares) $ 1.25      
Proceeds from issuance of common stock and warrants $ 3,000,000      
Sale of equity units description Each unit consists of one share of common stock and one warrant to purchase one-half of a share of common stock.      
Class of warrant description Each warrant will have a two-year term and will be exercisable at the following exercise prices: in the first year at $1.30 per share and in the second year at $1.50 per share.      
Capital stock, shares issued 25,474,954   23,074,954 23,074,954
Capital stock, shares outstanding 25,474,954   23,074,954 23,074,954
Options, Granted 0      
Total unrecognized compensation cost related to non-vested share based compensation $ 277,738      
Expected weighted-average period of unrecognized compensation cost 1 year 6 months 29 days      
Total fair value of share based compensation arrangements vested $ 0 $ 0    
2015 and 2016 Stock Incentive and Compensation Plans        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Weighted average remaining contractual term (in years), grants 5 years      
2015 and 2016 Stock Incentive and Compensation Plans | Maximum        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Number of options and stock available for grant to employees 1,569,000      
Measurement Input Expected Term        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Expected term of warrant 2 years      
Exercisable in First Year        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Exercise price of warrants $ 1.30      
Exercisable in Second Year        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Exercise price of warrants $ 1.50