Recent Accounting Pronouncements Impact of Adoption of ASC 606 on Previously Reported Statement of Income (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
REVENUE	$ 392,543	$ 361,284
EXPENSES
Cost of Revenue	220,112	203,915
Research and Development	24,026	20,929
Selling, General and Administrative	45,183	41,088
Gain (Loss) on Disposition of Business	0	(1,705)
Total Expenses	289,321	264,227
OPERATING INCOME	103,222	97,057
INTEREST INCOME (EXPENSE)
Interest income	291	147
Interest Expense	(147)	(189)
Total interest income (expense)	144	(42)
INCOME BEFORE INCOME TAXES	103,366	97,015
PROVISION/ (BENEFIT) FOR INCOME TAXES	19,815	30,145
NET INCOME	$ 83,551	$ 66,870
Earnings Per Share
Basic earnings per share	$ 1.08	$ 0.87
Basic weighted average shares outstanding	77,188	77,283
Diluted earnings per share	$ 1.08	$ 0.86
Diluted weighted average shares outstanding	77,537	77,646
Accounting Standards Update 2014-09 [Member]
REVENUE		$ 1,350
EXPENSES
Cost of Revenue		(800)
Research and Development		0
Selling, General and Administrative		(2,645)
Gain (Loss) on Disposition of Business		0
Total Expenses		(3,445)
OPERATING INCOME		4,795
INTEREST INCOME (EXPENSE)
Interest income		0
Interest Expense		0
Total interest income (expense)		0
INCOME BEFORE INCOME TAXES		4,795
PROVISION/ (BENEFIT) FOR INCOME TAXES		1,336
NET INCOME		3,459
Previously Reported [Member]
REVENUE		359,934
EXPENSES
Cost of Revenue		204,715
Research and Development		20,929
Selling, General and Administrative		43,733
Gain (Loss) on Disposition of Business		(1,705)
Total Expenses		267,672
OPERATING INCOME		92,262
INTEREST INCOME (EXPENSE)
Interest income		147
Interest Expense		(189)
Total interest income (expense)		(42)
INCOME BEFORE INCOME TAXES		92,220
PROVISION/ (BENEFIT) FOR INCOME TAXES		28,809
NET INCOME		$ 63,411
Earnings Per Share
Basic earnings per share		$ 0.82
Diluted earnings per share		$ 0.82