Nature of Business and Summary of Significant Accounting Policies - Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Nature of Business and Summary of Significant Accounting Policies
Basic EPS	$ 2,319	$ 3,233
Weighted Average Shares, Basic EPS	18,347,000	18,478,000
Stock Options	45,000	58,000
Diluted EPS	$ 2,319	$ 3,233
Weighted Average Shares, Diluted EPS	18,392,000	18,536,000
Net Income Per Share, Basic	$ 0.13	$ 0.17
Net Income Per Share, Diluted	$ 0.13	$ 0.17