Condensed Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Income Statement [Abstract]
Net Sales	$ 317,882	$ 296,174	$ 984,117	$ 914,755
Cost of Sales	242,485	228,263	736,129	687,430
Gross Profit	75,397	67,911	247,988	227,325
Selling, General and Administrative Expenses	37,981	29,875	109,902	97,005
Change in Contingent Consideration	88	521	(9,517)	1,514
Operating Income	37,328	37,515	147,603	128,806
Other, Net	1,329	525	3,682	1,595
Income Before Income Taxes	38,657	38,040	151,285	130,401
Taxes Based on Income	8,053	10,419	33,746	27,474
Net Income	$ 30,604	$ 27,621	$ 117,539	$ 102,927
Net Income Per Common Share:
Basic (in dollars per share)	$ 1.11	$ 1.01	$ 4.28	$ 3.75
Diluted (in dollars per share)	$ 1.11	$ 1.00	$ 4.26	$ 3.74
Weighted Average Common Shares Outstanding:
Basic (in shares)	27,448	27,405	27,436	27,399
Diluted (in shares)	27,549	27,458	27,543	27,456