Consolidated Statements of Stockholders' Equity - 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, 2016	$ 6,250	$ 773	$ 55,227	$ 81,228	$ (51,965)	$ 91,513
Total comprehensive income (loss)				991	1,980	2,971
Dividends				(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
Total comprehensive income (loss)				(3,633)	825	(2,808)
Dividends				(1,401)		(1,401)
Repurchase of shares	(58)	(8)	(497)			(563)
Issuance of stock	20	20	279			319
Stock-based compensation	18		280			298
Conversion	54	(54)
Balance at Jun. 30, 2018	6,302	720	55,641	74,368	(49,160)	87,871
Total						(49,160)
Total comprehensive income (loss)				6,079	(10,081)	(4,002)
Repurchase of shares	(154)	(5)	(791)			(950)
Issuance of stock		15	66			81
Stock-based compensation	19		360			379
Conversion	40	(40)
Transfer of historical translation adjustment				40	(40)
Balance at Jun. 30, 2019	6,207	690	55,276	80,487	(59,281)	83,379
Currency translation loss, net of taxes					(49,558)
Pension and postretirement plans, net of taxes					(9,723)
Total					$ (59,281)	$ (59,281)