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, 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)				85,277
Repurchase of common stock				$ (712)		(712)
Forfeiture of restricted stock (in shares)				1,333
Forfeiture of restricted stock
Tax effect of stock compensation		92				92
Change in minimum pension liability, net of tax					284	284
Unrealized gain(loss) 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
Issuance of common stock for restricted stock grants (in shares)	675,000
Issuance of common stock for restricted stock grants	$ 6	(6)
Compensation expense related to stock compensation plans		2,232				2,232
Repurchase of common stock (in shares)				43,610
Repurchase of common stock				$ (510)		(510)
Forfeiture of restricted stock (in shares)				9,999
Forfeiture of restricted stock
Tax effect of stock compensation
Change in minimum pension liability, net of tax					104	104
Unrealized gain(loss) resulting from change in fair value of derivative instruments, net of tax					223	223
Net income			5,051			5,051
Balance (in shares) at Jun. 30, 2018	8,656,677			1,098,268
Balance at Jun. 30, 2018	$ 85	$ 24,486	$ 50,839	$ (6,584)	$ (578)	$ 68,248