Segment Information (Financial Information by Segment) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Sales	$ 810,897	$ 823,999	$ 1,568,238	$ 1,666,700
Depreciation and amortization	8,348	9,081	17,059	17,599
Change in fair value of contingent consideration	0	3,176	516	5,649
Operating income	17,130	18,566	18,764	38,079
Capital expenditures	(706)	(1,793)	(1,454)	(2,732)
Restructuring and other charges	484	266	8,753	435
Corporate
Segment Reporting Information [Line Items]
Depreciation and amortization	794	581	1,589	1,590
Operating income	(1,844)	(1,151)	(10,610)	(1,909)
Reportable Geographical Components | United States and Canada
Segment Reporting Information [Line Items]
Sales	723,522	744,877	1,414,603	1,522,848
Reportable Geographical Components | International
Segment Reporting Information [Line Items]
Sales	90,893	89,167	164,631	163,357
Geography Eliminations
Segment Reporting Information [Line Items]
Sales	(3,518)	(10,045)	(10,996)	(19,505)
Worldwide Barcode, Networking & Security
Segment Reporting Information [Line Items]
Sales	551,394	575,001	1,074,970	1,156,188
Capital expenditures	(303)	(914)	(642)	(1,439)
Worldwide Barcode, Networking & Security | Operating Segments
Segment Reporting Information [Line Items]
Depreciation and amortization	3,892	4,353	8,081	8,554
Operating income	5,887	13,302	8,034	24,374
Worldwide Communications & Services
Segment Reporting Information [Line Items]
Sales	259,503	248,998	493,268	510,512
Change in fair value of contingent consideration	0	3,176	516	5,649
Capital expenditures	(403)	(879)	(812)	(1,293)
Worldwide Communications & Services | Operating Segments
Segment Reporting Information [Line Items]
Depreciation and amortization	3,662	4,147	7,389	7,455
Operating income	$ 13,087	$ 6,415	$ 21,340	$ 15,614