Nature of Business and Summary of Significant Accounting Policies - Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Schedule of Weighted Average Number of Diluted Shares Outstanding [Line Items]
Net Income , Basic (in dollars)	$ 857	$ 976	$ 1,425	$ 1,291
Net Income, Diluted (in dollars)	$ 857	$ 976	$ 1,425	$ 1,291
Weighted Average Shares, Basic EPS	18,798,000	18,931,000	18,792,000	18,948,000
Effect of Dilutive Securities Stock Options	53,000	26,000	52,000	23,000
Weighted average shares, Diluted EPS	18,851,000	18,957,000	18,844,000	18,971,000
Net Income Per Share Basic	$ 0.05	$ 0.05	$ 0.08	$ 0.07
Net Income Per Share Diluted	$ 0.05	$ 0.05	$ 0.08	$ 0.07