Nature of Business and Summary of Significant Accounting Policies - Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Schedule of Weighted Average Number of Diluted Shares Outstanding [Line Items]
Net Income, Basic EPS	$ 1,504	$ 890
Weighted Average Shares, Basic EPS	18,726,000	18,846,000
Weighted Average Shares, Stock Options	50,000	33,000
Net Income, Diluted EPS	$ 1,504	$ 890
Weighted Average Shares, Diluted EPS	18,776,000	18,879,000
Net Income Per Share, Basic	$ 0.08	$ 0.05
Net Income Per Share, Diluted	$ 0.08	$ 0.05