Business and Summary of Significant Accounting Policies (Narrative) (Details)	12 Months Ended
	Jun. 30, 2020 USD ($) earnout_payment segment product_line	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jul. 01, 2019 USD ($)
Number of reportable segments | segment	2
Amount of related party transactions	$ 0	$ 0	$ 0
Cash and cash equivalents	$ 29,485,000	19,305,000
Derivative contract term	90 days
Deferred compensation plan investments, current and non-current	$ 27,159,000	25,787,000
Deferred compensation plan liabilities, current and non-current portion	27,159,000	25,787,000
Deferred compensation plan assets, current	2,600,000	1,600,000
Deferred compensation plan liabilities, current	$ 2,600,000	1,600,000
Number of product lines with warranty programs | product_line	3
Product warranty term	30 days
Goodwill impairment charges	$ 119,037,000	0	0
Intangible assets, impairment charges	$ 1,400,000	$ 0	$ 0
Accounting Standards Update [Extensible List]	us-gaap:AccountingStandardsUpdate201602Member
Operating lease right-of-use assets	$ 23,581,000
Present value of lease payments	25,236,000
Worldwide Barcode, Networking and Security Segment [Member]
Goodwill impairment charges	$ 119,037,000
Cumulative Effect, Period of Adoption, Adjustment [Member]
Operating lease right-of-use assets				$ 37,000,000
Present value of lease payments				$ 37,000,000
Building Improvements [Member]
Property and equipment, estimated useful life (years)	15 years
Minimum [Member]
Intangible assets, estimated useful life (years)	3 years
Minimum [Member] | Furniture [Member]
Property and equipment, estimated useful life (years)	3 years
Minimum [Member] | Buildings [Member]
Property and equipment, estimated useful life (years)	25 years
Minimum [Member] | Software Development [Member]
Property and equipment, estimated useful life (years)	3 years
Maximum [Member]
Intangible assets, estimated useful life (years)	19 years
Maximum [Member] | Furniture [Member]
Property and equipment, estimated useful life (years)	10 years
Maximum [Member] | Buildings [Member]
Property and equipment, estimated useful life (years)	40 years
Maximum [Member] | Software Development [Member]
Property and equipment, estimated useful life (years)	10 years
Supplier Concentration Risk [Member] | Minimum [Member]
Concentration risk percentage	10.00%	10.00%	10.00%
International [Member]
Cash and cash equivalents	$ 23,600,000	$ 14,100,000
Bank Overdrafts [Member]
Outstanding checks	$ 15,400,000	$ 7,400,000
Intelisys [Member]
Number of remaining earnout payments | earnout_payment	1