Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock Outstanding Class A	Common Stock Outstanding Class B	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Beginning balance at Jun. 30, 2019	$ 83,379	$ 6,207	$ 690	$ 55,276	$ 80,487	$ (59,281)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total comprehensive (loss) income	(37,973)				(21,839)	(16,134)
Transfer of historical translation adjustment	0				0	0
Repurchase of shares	26		6	20
Issuance of stock	73		21	52
Stock-based compensation	530	76		454
Conversion of Class B to Class A shares	0	25	(25)
Ending balance at Jun. 30, 2020	45,983	6,308	680	55,762	58,648	(75,415)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total comprehensive (loss) income	36,686				15,533	21,153
Repurchase of shares	32		6	26
Issuance of stock	75		16	59
Stock-based compensation	823	111		712
Conversion of Class B to Class A shares	0	56	(56)
Ending balance at Jun. 30, 2021	83,535	6,475	634	56,507	74,181	(54,262)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total	(54,262)
Total comprehensive (loss) income	18,074				14,878	3,196
Repurchase of shares	53		6	47
Issuance of stock	214	7	43	164
Stock-based compensation	659	140		519
Conversion of Class B to Class A shares	0	61	(61)
Ending balance at Jun. 30, 2022	102,429	$ 6,683	$ 610	$ 57,143	$ 89,059	(51,066)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Currency translation loss, net of taxes						(60,076)
Pension and postretirement plans, net of taxes						9,010
Total	$ (51,066)					$ (51,066)