Goodwill and Other Identifiable Intangible Assets (Changes in the Carrying Amount of Goodwill) (Details) - USD ($)	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 310,715,000	$ 288,723,000
Additions	30,445,000	21,854,000
Goodwill impairment charges	(119,037,000)	0	$ 0
Unrealized loss on foreign currency translation	(7,835,000)	138,000
Goodwill, ending balance	214,288,000	310,715,000	288,723,000
Worldwide Barcode, Networking and Security Segment [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance	135,965,000	135,954,000
Additions	0	0
Goodwill impairment charges	(119,037,000)
Unrealized loss on foreign currency translation	(558,000)	11,000
Goodwill, ending balance	16,370,000	135,965,000	135,954,000
Worldwide Communications and Services Segment [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance	174,750,000	152,769,000
Additions	30,445,000	21,854,000
Goodwill impairment charges	0
Unrealized loss on foreign currency translation	(7,277,000)	127,000
Goodwill, ending balance	$ 197,918,000	$ 174,750,000	$ 152,769,000