Consolidated Statements of Changes in Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]	Treasury Stock [Member]	Total
Balance at Jun. 30, 2016	$ 861	$ 10,872	$ 63,805	$ (725)	$ (512)	$ 74,301
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Options exercised		30			45	75
Tax benefit of stock based compensation		41				41
Dividends declared			(369)			(369)
Net income			2,507			2,507
Other comprehensive income (loss), net of taxes				(141)		(141)
Balance at Sep. 30, 2016	861	10,943	65,943	(866)	(467)	76,414
Balance at Jun. 30, 2017	861	10,990	73,072	(992)	(410)	83,521
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Options exercised		2			4	6
Dividends declared			(379)			(379)
Net income			3,472			3,472
Other comprehensive income (loss), net of taxes				235		235
Balance at Sep. 30, 2017	$ 861	$ 10,992	$ 76,165	$ (757)	$ (406)	$ 86,855