Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Reconciliation of Shares Used in Calculating Basic and Diluted Earnings per Common Shares (Details)

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Summary of Significant Accounting Policies - Reconciliation of Shares Used in Calculating Basic and Diluted Earnings per Common Shares (Details) - shares
3 Months Ended 9 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Mar. 31, 2021
Mar. 31, 2020
Earnings Per Share [Abstract]        
Basic weighted average shares outstanding 8,028,900 7,031,400 7,403,900 7,031,400
Effect of common stock equivalents — stock issuable under outstanding equity awards 639,000 12,000 577,000 32,000
Diluted weighted average shares outstanding 8,668,300 7,042,800 7,980,700 7,063,100