Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	AOCI Attributable to Parent [Member]	Total
Balance (in shares) at Jun. 30, 2015	7,618,677			875,584
Balance at Jun. 30, 2015	$ 75	$ 20,258	$ 29,007	$ (4,714)	$ (766)	$ 43,860
Issuance of common stock for restricted stock grants (in shares)	208,000
Issuance of common stock for restricted stock grants	$ 2	(2)
Compensation expense related to stock compensation plans		724				724
Repurchase of common stock (in shares)				82,465
Repurchase of common stock				$ (648)		(648)
Tax effect of stock compensation		158				158
Change in minimum pension liability, net of tax					(132)	(132)
Unrealized (loss) gain resulting from change in fair value of derivative instruments, net of tax					218	218
Net income			9,546			9,546
Balance (in shares) at Jun. 30, 2016	7,826,677			958,049
Balance at Jun. 30, 2016	$ 77	21,138	38,553	$ (5,362)	(680)	53,726
Issuance of common stock for restricted stock grants (in shares)	155,000
Issuance of common stock for restricted stock grants	$ 2	(2)
Compensation expense related to stock compensation plans		1,032				1,032
Repurchase of common stock (in shares)				86,610
Repurchase of common stock				$ (712)		(712)
Tax effect of stock compensation		92				92
Change in minimum pension liability, net of tax					284	284
Unrealized (loss) gain resulting from change in fair value of derivative instruments, net of tax					(509)	(509)
Net income			7,235			7,235
Balance (in shares) at Jun. 30, 2017	7,981,677			1,044,659
Balance at Jun. 30, 2017	$ 79	$ 22,260	$ 45,788	$ (6,074)	$ (905)	$ 61,148