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, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Schedule of Weighted Average Number of Diluted Shares Outstanding [Line Items]
Basic EPS	$ 1,829	$ 952	$ 3,952	$ 2,377
Weighted Average Shares, Basic EPS	18,737,000	18,819,000	18,811,000	18,797,000
Stock Options	35,000	36,000	34,000	47,000
Diluted EPS	$ 1,829	$ 952	$ 3,952	$ 2,377
Weighted Average Shares, Diluted EPS	18,772,000	18,855,000	18,845,000	18,844,000
Net Income Per Share, Basic	$ 0.1	$ 0.05	$ 0.21	$ 0.13
Net Income Per Share, Diluted	$ 0.1	$ 0.05	$ 0.21	$ 0.13