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Earnings Per Share - Additional Information (Details) - shares
12 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities excluded from computation of earnings per share 419,500 0
Stock Options    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Stock options, outstanding 554,500 570,750
Restricted Stock    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Stock options, outstanding 225,500 233,500