Consolidated Statements of Changes in Equity - USD ($)	Common Stock [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Treasury Stock [Member]	Noncontrolling Interest [Member]	Total
Balance at Jun. 30, 2017	$ 10,429,000	$ 169,368,000	$ (32,671,000)	$ (24,205,000)	$ 646,000	$ 123,567,000
Net income		9,528,000			119,000	9,647,000
Translation adjustments			955,000		26,000	981,000
Benefit plan adjustments, net of tax			7,924,000			7,924,000
Cash dividends					(172,000)	(172,000)
Compensation expense	2,062,000					2,062,000
Shares (acquired) issued, net	(921,000)			528,000		(393,000)
Unrealized loss on cash flow hedge, net of tax						0
Balance at Jun. 30, 2018	11,570,000	178,896,000	(23,792,000)	(23,677,000)	619,000	143,616,000
Net income		10,673,000			123,000	10,796,000
Translation adjustments			(2,646,000)		(25,000)	(2,671,000)
Benefit plan adjustments, net of tax			(4,121,000)			(4,121,000)
Cash dividends					(115,000)	(115,000)
Compensation expense	2,591,000					2,591,000
Shares (acquired) issued, net	30,886,000			2,345,000		33,231,000
Unrealized loss on cash flow hedge, net of tax			(509,000)			(509,000)
Release stranded tax effects		6,903,000	(6,903,000)
Balance at Jun. 30, 2019	$ 45,047,000	$ 196,472,000	$ (37,971,000)	$ (21,332,000)	$ 602,000	$ 182,818,000