Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Common Shares [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]
Beginning Balance at Jun. 30, 2016	$ 19,489	$ 4,722	$ 13,539	$ 1,648	$ (420)
Beginning Balance,Shares at Jun. 30, 2016		9,444,000
Net earnings (loss)	2,688	$ 0	0	2,688	0
Minimum pension liability adjustment, net of tax	93	0	0	0	93
Share-based compensation	64	$ 0	64	0	0
Share-based compensation, shares		0
Shares repurchased	(641)	$ (141)	(500)	0	0
Shares repurchased, shares		(281,000)
Ending Balance at Jun. 30, 2017	$ 21,693	$ 4,581	13,103	4,336	(327)
Ending Balance, Shares at Jun. 30, 2017	9,163,000	9,163,000
Net earnings (loss)	$ (1,593)	$ 0	0	(1,593)	0
Minimum pension liability adjustment, net of tax	150	0	0	0	150
Share-based compensation	8	$ 0	8	0	0
Share-based compensation, shares		0
Shares repurchased	(3,072)	$ (908)	(2,164)	0	0
Shares repurchased, shares		(1,816,000)
Ending Balance at Jun. 30, 2018	$ 17,186	$ 3,673	$ 10,947	$ 2,743	$ (177)
Ending Balance, Shares at Jun. 30, 2018	7,347,000	7,347,000