Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Jun. 30, 2022
Segment Reporting Information [Line Items]
Net sales	$ 1,060,280	$ 876,874	$ 2,122,685	$ 1,768,555
Operating income for reportable segments	112,893	78,177	219,425	152,791
Assets used in business	2,522,904	2,225,709	2,522,904	2,225,709	$ 2,452,588
Depreciation and amortization of property	5,552	5,436	11,033	10,863
Capital expenditures	7,263	3,889	12,817	7,510
Service Center Based Distribution Segment [Member]
Segment Reporting Information [Line Items]
Net sales	705,392	587,218	1,423,380	1,188,089
Operating income for reportable segments	86,484	67,450	175,293	132,103
Assets used in business	1,454,040	1,265,567	1,454,040	1,265,567
Depreciation and amortization of property	4,474	4,371	8,923	8,750
Capital expenditures	4,751	3,039	8,316	6,136
Engineered Solutions Segment [Member]
Segment Reporting Information [Line Items]
Net sales	354,888	289,656	699,305	580,466
Operating income for reportable segments	51,626	36,426	97,160	71,231
Assets used in business	1,068,864	960,142	1,068,864	960,142
Depreciation and amortization of property	1,078	1,065	2,110	2,113
Capital expenditures	2,512	850	4,501	1,374
Reportable Segments Total
Segment Reporting Information [Line Items]
Operating income for reportable segments	$ 138,110	$ 103,876	$ 272,453	$ 203,334