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Earnings Per Share - Additional information (Details) - shares
6 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Stock Options    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Stock options, outstanding 554,500 509,000
Antidilutive securities excluded from computation of earnings per share 0 45,000
Restricted Stock    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Restricted stock, outstanding 225,500 12,000