Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Earnings per Share) (Details)

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Summary of Significant Accounting Policies (Earnings per Share) (Details) - shares
3 Months Ended 6 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Accounting Policies [Abstract]        
Basic weighted average shares outstanding 7,031,400 7,031,400 7,031,400 7,031,400
Effect of common stock equivalents — stock issuable under outstanding equity awards 25,000 55,000 44,000 58,000
Diluted weighted average shares outstanding 7,056,300 7,085,600 7,074,800 7,088,700