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Earnings Per Share - Additional information (Details) - shares
9 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Stock Options    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Stock options, outstanding 554,500 497,750
Antidilutive securities excluded from computation of earnings per share 135,000 497,750
Restricted Stock    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Restricted stock, outstanding 225,500 9,000