Segment Data (Details) $ in Thousands	12 Months Ended
	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)
Segment Reporting Information [Line Items]
Property, Plant and Equipment, Net	$ 938,063	$ 969,068
Sales	2,046,899	2,078,184	$ 2,012,456
Total operating income	170,223	192,417	218,140
Interest expense	26,472	28,496	25,914
Other expense (income), net	(699)	4,300	(14,507)
Income before income taxes	144,450	159,621	206,733
Depreciation and Amortization	134,687	134,025	131,678
Assets	2,503,758	2,547,234	2,573,524
Capital Expenditures	$ 107,561	94,385	96,924
Sales To a Single Customer Did Not Aggretage More Than	0.05
Industrial [Member]
Segment Reporting Information [Line Items]
Sales	$ 1,280,781	1,269,765	1,227,273
Total operating income	132,573	135,763	121,386
Depreciation and Amortization	90,917	90,880	87,986
Assets	1,416,884	1,460,757	1,469,835
Segment, Expenditure, Addition to Long-Lived Assets	71,148	58,384	64,055
Infrastructure [Member]
Segment Reporting Information [Line Items]
Sales	766,118	808,419	785,183
Total operating income	39,857	59,757	98,871
Depreciation and Amortization	43,770	43,144	43,691
Assets	690,374	734,944	768,226
Segment, Expenditure, Addition to Long-Lived Assets	36,413	36,001	32,869
Corporate [Member]
Segment Reporting Information [Line Items]
Total operating income	(2,207)	(3,103)	(2,117)
Depreciation and Amortization	0	1	1
Assets	$ 396,500	$ 351,533	$ 335,463