Valuation And Qualifying Accounts (Schedule Of Valuation and Qualifying Accounts) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
POS Portal [Member]
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Reserves of businesses acquired	$ 100
Intelisys [Member]
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Reserves of businesses acquired		$ 300
Recoveries		600
KBZ [Member]
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Reserves of businesses acquired			$ 1,200
Recoveries			1,500
SEC Schedule, 12-09, Allowance, Credit Loss [Member]
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	44,434	39,032	32,589
Amounts Charged to Expense	7,075	8,901	7,571
Reductions	(5,610)	(3,860)	(3,829)
Other	(338)	361	2,701
Balance at End of Period	$ 45,561	$ 44,434	$ 39,032