Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member] Common Class A [Member]	Common Stock [Member] Common Class B [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance at Jun. 30, 2014	$ 6,166	$ 795	$ 54,063	$ 95,715	$ (20,425)	$ 136,314
Total comprehensive income				5,244	(25,191)	(19,947)
Dividends ($0.40 per share)				(2,795)		(2,795)
Repurchase of shares	(1)	(3)	(64)			(68)
Issuance of stock	15	33	516			564
Stock-based compensation	8		354			362
Conversion	36	(36)
Balance at Jun. 30, 2015	6,224	789	54,869	98,164	(45,616)	114,430
Total comprehensive income				(14,130)	(6,349)	(20,479)
Dividends ($0.40 per share)				(2,806)		(2,806)
Repurchase of shares	(37)	(5)	(421)			(463)
Issuance of stock	21	18	388			427
Stock-based compensation	13		391			404
Conversion	29	(29)
Balance at Jun. 30, 2016	6,250	773	55,227	81,228	(51,965)	91,513
						(51,965)
Total comprehensive income				991	1,980	2,971
Dividends ($0.40 per share)				(2,817)		(2,817)
Repurchase of shares	(35)	(8)	(343)			(386)
Issuance of stock	23	11	301			335
Stock-based compensation	16		394			410
Conversion	14	(14)
Balance at Jun. 30, 2017	$ 6,268	$ 762	$ 55,579	$ 79,402	(49,985)	92,026
Translation loss, net of taxes					(43,322)
Pension and postretirement plans, net of taxes					(6,663)
					$ (49,985)	$ (49,985)