CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Income Statement [Abstract]
REVENUE	$ 429,406	$ 380,364	$ 1,286,530	$ 1,159,182
EXPENSES
Cost of Revenue	258,571	235,594	753,629	682,990
Research and Development	28,308	23,442	80,086	71,458
Selling, General and Administrative	47,391	44,682	145,890	136,683
Loss on Disposal of Assets	3,198	205	3,095	183
Total Expenses	337,468	303,923	982,700	891,314
OPERATING INCOME	91,938	76,441	303,830	267,868
INTEREST INCOME (EXPENSE)
Interest income	197	155	1,050	697
Interest expense	(165)	(224)	(477)	(520)
Total Interest Income (Expense)	32	(69)	573	177
INCOME BEFORE INCOME TAXES	91,970	76,372	304,403	268,045
PROVISION/ (BENEFIT) FOR INCOME TAXES	18,115	17,120	69,080	57,153
NET INCOME	$ 73,855	$ 59,252	$ 235,323	$ 210,892
Earnings Per Share
Basic earnings per share	$ 0.96	$ 0.77	$ 3.06	$ 2.73
Basic weighted average shares outstanding	76,683	77,177	76,845	77,194
Diluted earnings per share	$ 0.96	$ 0.77	$ 3.06	$ 2.72
Diluted weighted average shares outstanding	76,884	77,286	76,962	77,411