CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
REVENUE	$ 422,361	$ 419,119	$ 874,161	$ 857,124
EXPENSES
Cost of Revenue	257,782	249,267	520,711	495,058
Research and Development	26,780	27,187	52,837	51,778
Selling, General and Administrative	44,167	48,961	89,393	98,396
Total Expenses	328,729	325,415	662,941	645,232
OPERATING INCOME	93,632	93,704	211,220	211,892
INTEREST INCOME (EXPENSE)
Interest income	52	346	120	853
Interest expense	(117)	(156)	(235)	(312)
Total Interest Income (Expense)	(65)	190	(115)	541
INCOME BEFORE INCOME TAXES	93,567	93,894	211,105	212,433
PROVISION FOR INCOME TAXES	21,585	21,796	47,907	50,965
NET INCOME	$ 71,982	$ 72,098	$ 163,198	$ 161,468
Earnings Per Share
Basic earnings per share	$ 0.94	$ 0.94	$ 2.14	$ 2.10
Basic weighted average shares outstanding	76,202	76,879	76,354	76,926
Diluted earnings per share	$ 0.94	$ 0.94	$ 2.13	$ 2.10
Diluted weighted average shares outstanding	76,280	76,935	76,496	77,001