Nature of Business and Summary of Significant Accounting Policies - Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Schedule of Weighted Average Number of Diluted Shares Outstanding [Line Items]
Net Income , Basic (in dollars)	$ 952	$ 1,044	$ 2,357	$ 2,335
Net Income, Diluted (in dollars)	$ 952	$ 1,044	$ 2,357	$ 2,335
Weighted Average Shares, Basic EPS	18,819,000	18,811,000	18,797,000	18,903,000
Effect of Dilutive Securities Stock Options	36,000	17,000	47,000	20,000
Weighted average shares, Diluted EPS	18,855,000	18,828,000	18,844,000	18,923,000
Net Income Per Share Basic	$ 0.05	$ 0.06	$ 0.13	$ 0.12
Net Income Per Share Diluted	$ 0.05	$ 0.06	$ 0.13	$ 0.12