Earnings Per Share (Details) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended
		Mar. 31, 2016 USD ($) $ / shares shares	Mar. 31, 2015 USD ($) $ / shares shares	Mar. 31, 2016 USD ($) $ / shares shares	Mar. 31, 2015 USD ($) $ / shares shares
Earnings Per Share [Abstract]
Stock split ratio			2	2	2
Antidilutive securities or contracts outstanding (in shares)		0	0	0	0
Net income | $		$ 2,161	$ 1,784	$ 6,631	$ 5,370
Weighted average number of shares outstanding, basic (in shares)	[1]	8,464,392	8,441,880	8,454,147	8,434,894
Weighted average number of shares outstanding, effect of dilutive stock options (in shares)		19,817	59,166	15,585	61,220
Weighted average number of shares outstanding, diluted (in shares)	[1]	8,484,209	8,501,046	8,469,732	8,496,114
Earnings per share, basic (in dollars per share) | $ / shares	[1]	$ 0.26	$ 0.21	$ 0.78	$ 0.64
Earnings per share, effect of dilutive stock options (in dollars per share) | $ / shares		(0.01)	0	0	(0.01)
Earnings per share, diluted (in dollars per share) | $ / shares	[1]	$ 0.25	$ 0.21	$ 0.78	$ 0.63

[1] Share and per share data for 2015 have been adjusted for 2-for-1 stock split