Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022	Jun. 30, 2022
Segment Reporting Information [Line Items]
Net sales	$ 1,132,035	$ 980,662	$ 3,254,720	$ 2,749,217
Operating income for reportable segments	126,911	95,843	346,336	248,634
Assets used in business	2,608,638	2,383,571	2,608,638	2,383,571	$ 2,452,588
Depreciation and amortization of property	5,565	5,352	16,598	16,215
Capital expenditures	7,992	4,164	20,809	11,674
Service Center Based Distribution Segment [Member]
Segment Reporting Information [Line Items]
Net sales	761,599	658,998	2,184,979	1,847,087
Operating income for reportable segments	103,083	81,640	278,376	213,743
Assets used in business	1,537,793	1,401,236	1,537,793	1,401,236
Depreciation and amortization of property	4,486	4,362	13,409	13,112
Capital expenditures	3,413	3,435	11,729	9,571
Engineered Solutions Segment [Member]
Segment Reporting Information [Line Items]
Net sales	370,436	321,664	1,069,741	902,130
Operating income for reportable segments	51,917	40,586	149,077	111,817
Assets used in business	1,070,845	982,335	1,070,845	982,335
Depreciation and amortization of property	1,079	990	3,189	3,103
Capital expenditures	4,579	729	9,080	2,103
Reportable Segments Total
Segment Reporting Information [Line Items]
Operating income for reportable segments	$ 155,000	$ 122,226	$ 427,453	$ 325,560