Segment Information (Assets By Segment) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Jun. 30, 2020
Segment Reporting Information [Line Items]
Assets	$ 1,597,119	$ 1,692,094
Property and equipment, net by Geography Category	48,183	55,641
Discontinued Operations
Segment Reporting Information [Line Items]
Assets	0	181,231
United States and Canada
Segment Reporting Information [Line Items]
Property and equipment, net by Geography Category	45,265	53,083
International
Segment Reporting Information [Line Items]
Property and equipment, net by Geography Category	2,918	2,558
Corporate | Continuing Operations
Segment Reporting Information [Line Items]
Assets	39,614	59,064
Worldwide Barcode, Networking & Security | Operating Segments | Continuing Operations
Segment Reporting Information [Line Items]
Assets	767,923	766,746
Worldwide Communications & Services | Operating Segments | Continuing Operations
Segment Reporting Information [Line Items]
Assets	$ 789,582	$ 685,053