Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Common Shares [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Earnings (Loss) [Member]
Beginning Balance at Jun. 30, 2014	$ 33,318	$ 4,722	$ 13,444	$ 15,486	$ (334)
Beginning Balance,Shares at Jun. 30, 2014		9,444,000
Net earnings (loss)	245	$ 0	0	245	0
Minimum pension liability adjustment, net of tax	(40)	0	0	0	(40)
Share-based compensation	37	$ 0	37	0	0
Share-based compensation, shares		0
Ending Balance at Jun. 30, 2015	33,560	$ 4,722	13,481	15,731	(374)
Ending Balance, Shares at Jun. 30, 2015		9,444,000
Net earnings (loss)	(14,083)	$ 0	0	(14,083)	0
Minimum pension liability adjustment, net of tax	(46)	0	0	0	(46)
Share-based compensation	58	$ 0	58	0	0
Share-based compensation, shares		0
Ending Balance at Jun. 30, 2016	$ 19,489	$ 4,722	13,539	1,648	(420)
Ending Balance, Shares at Jun. 30, 2016	9,444,000	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