Consolidated Statements of Changes in Equity - USD ($) $ in Thousands	Common Stock [Member]	Retained Earnings, Appropriated [Member]	AOCI Attributable to Parent [Member]	Treasury Stock [Member]	Noncontrolling Interest [Member]	Total
Balance at Jun. 30, 2014	$ 11,973	$ 183,695	$ (15,943)	$ (28,141)	$ 727	$ 152,311
Net (loss) earnings		11,173			212	11,385
Translation adjustments			(14,039)		(80)	(14,119)
Benefit plan adjustments, net of tax			(5,499)			(5,499)
Cash dividends		(4,061)			(220)	(4,281)
Compensation expense and windfall tax benefits	668					668
Shares (acquired) issued, net	(382)			84		(298)
Balance at Jun. 30, 2015	12,259	190,807	(35,481)	(28,057)	639	140,167
Net (loss) earnings		(13,104)			91	(13,013)
Translation adjustments			(1,582)		25	(1,557)
Benefit plan adjustments, net of tax			(7,080)			(7,080)
Cash dividends		(2,041)			(192)	(2,233)
Compensation expense and windfall tax benefits	946					946
Shares (acquired) issued, net	(1,444)			1,267		(177)
Balance at Jun. 30, 2016	11,761	175,662	(44,143)	(26,790)	563	117,053
Net (loss) earnings		(6,294)			179	(6,115)
Translation adjustments			972		13	985
Benefit plan adjustments, net of tax			10,500			10,500
Cash dividends					(109)	(109)
Compensation expense and windfall tax benefits	1,393					1,393
Shares (acquired) issued, net	(2,725)			2,585		(140)
Balance at Jun. 30, 2017	$ 10,429	$ 169,368	$ (32,671)	$ (24,205)	$ 646	$ 123,567