Annual report pursuant to Section 13 and 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
12 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Accounting Policies [Abstract]    
Basic weighted average shares outstanding 7,031,400 7,029,400
Effect of common stock equivalents — stock issuable under outstanding equity awards 0 93,000
Diluted weighted average shares outstanding 7,031,400 7,121,500