Segment Information (Financial Information by Segment) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Sales	$ 884,792	$ 1,011,241	$ 1,761,098	$ 1,955,054
Depreciation and amortization	7,258	7,057	14,475	14,285
Operating income (loss)	26,826	39,432	50,911	74,319
Capital expenditures	(2,550)	(2,504)	(4,865)	(4,262)
Specialty Technology Solutions
Segment Reporting Information [Line Items]
Sales	520,651	627,548	1,030,222	1,203,878
Modern Communications & Cloud
Segment Reporting Information [Line Items]
Sales	364,141	383,693	730,876	751,176
Operating Segments | Specialty Technology Solutions
Segment Reporting Information [Line Items]
Sales	520,651	627,548	1,030,222	1,203,878
Depreciation and amortization	2,897	2,758	5,654	5,462
Operating income (loss)	13,368	19,682	25,240	41,534
Capital expenditures	(304)	(524)	(1,565)	(1,026)
Operating Segments | Modern Communications & Cloud
Segment Reporting Information [Line Items]
Sales	364,141	383,693	730,876	751,176
Depreciation and amortization	3,593	3,738	7,334	7,385
Operating income (loss)	14,602	19,750	27,014	32,785
Capital expenditures	(2,246)	(1,980)	(3,300)	(3,236)
Corporate
Segment Reporting Information [Line Items]
Depreciation and amortization	768	561	1,487	1,438
Operating income (loss)	(1,144)	0	(1,343)	0
Reportable Geographical Components | United States and Canada
Segment Reporting Information [Line Items]
Sales	797,580	911,033	1,590,045	1,772,637
Reportable Geographical Components | International
Segment Reporting Information [Line Items]
Sales	89,410	102,020	174,714	186,294
Geography Eliminations
Segment Reporting Information [Line Items]
Sales	$ (2,198)	$ (1,812)	$ (3,661)	$ (3,877)