CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY AND COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	Total	Common Stock	Common Stock Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock
Beginning Balance at Jun. 30, 2010	$ 1,179,381	$ 734	$ 224,209	$ 1,055,591	$ 9,896	$ (111,049)
Comprehensive Income:
Net income	330,403			330,403
Foreign currency translation	5,646				5,646
Unrealized investment gains, net of tax	187				187
COMPREHENSIVE INCOME	336,663
Non-controlling Interest Fanor	1,321			(1,321)
Stock-based compensation	14,251		14,251
Cash dividends of $0.34, $0.30 and $0.24 per common share in 2013, 2012 and 2011 respectively	(16,701)			(16,701)
Proceeds from exercise of stock options	8,350	4	9,094			(748)
Tax benefit from exercise of stock options	800		800
Proceeds from stock issued under Employee Stock Purchase Plan	1,460		64			1,396
Repurchase of common shares for treasury	(132,940)					(132,940)
Ending Balance at Jun. 30, 2011	1,389,516	738	248,418	1,367,972	15,729	(243,341)
Comprehensive Income:
Net income	141,565			141,565
Foreign currency translation	(21,608)				(21,608)
Unrealized investment gains, net of tax	(10)				(10)
COMPREHENSIVE INCOME	120,763
Non-controlling Interest Fanor	671
Accretion of Noncontrolling Interest	(671)			(671)
Stock-based compensation	18,530		18,530
Cash dividends of $0.34, $0.30 and $0.24 per common share in 2013, 2012 and 2011 respectively	(19,878)			(19,878)
Proceeds from exercise of stock options	4,954	3	6,130			(1,179)
Tax benefit from exercise of stock options	372		372
Proceeds from stock issued under Employee Stock Purchase Plan	1,716		(488)			2,204
Repurchase of common shares for treasury	(158,093)					(158,093)
Ending Balance at Jun. 30, 2012	1,356,393	741	272,962	1,488,988	(5,889)	(400,409)
Comprehensive Income:
Net income	106,786			106,786
Foreign currency translation	(11,369)				(11,369)
Unrealized investment gains, net of tax	157				157
COMPREHENSIVE INCOME	97,628
Non-controlling Interest Fanor	(1,793)
Accretion of Noncontrolling Interest	1,793			1,793
Stock-based compensation	15,493		15,493
Cash dividends of $0.34, $0.30 and $0.24 per common share in 2013, 2012 and 2011 respectively	(21,736)			(21,736)
Proceeds from exercise of stock options	3,685	4	4,972			(1,291)
Tax benefit from exercise of stock options	(1,864)		(1,864)
Proceeds from stock issued under Employee Stock Purchase Plan	1,704		(294)	(822)		2,820
Repurchase of common shares for treasury	(53,886)					(53,886)
Ending Balance at Jun. 30, 2013	$ 1,397,156	$ 745	$ 291,269	$ 1,575,009	$ (17,101)	$ (452,766)