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Earnings (Loss) Per Share (Detail Textuals) - shares
3 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Stock Option    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Stock options, outstanding 514,000 591,200
Antidilutive securities excluded from computation of earnings per share 20,000 591,250
Restricted Stock    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Stock options, outstanding 13,500 109,000