CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY AND COMPREHENSIVE INCOME - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock
Beginning 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	96,553
Accretion (Dilution) of Noncontrolling Interest	1,793			1,793
Stock-based compensation	15,493		15,493
Cash dividends of $0.34, $0.34, $0.36, per common share in 2013, 2014 and 2015 respectively	(21,736)			(21,736)
Net proceeds from exercise of stock options	3,685	4	4,972			(1,291)
Tax benefit (cost) 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)
Comprehensive Income:
Net income	134,032			134,032
Foreign currency translation	1,369				1,369
Unrealized investment gains, net of tax	338				338
Comprehensive Income	135,771
Accretion (Dilution) of Noncontrolling Interest	(4,860)			(4,860)
Stock-based compensation	17,685		17,685
Cash dividends of $0.34, $0.34, $0.36, per common share in 2013, 2014 and 2015 respectively	(21,903)			(21,903)
Net proceeds from exercise of stock options	6,928	8	10,473			(3,553)
Tax benefit (cost) from exercise of stock options	1,276		1,276
Proceeds from stock issued under Employee Stock Purchase Plan	1,372			(207)		1,579
Ending Balance at Jun. 30, 2014	1,533,393	753	320,703	1,682,071	(15,394)	(454,740)
Comprehensive Income:
Net income	139,899			139,899
Foreign currency translation	(61,703)				(61,703)
Unrealized investment gains, net of tax	(17)				(17)
Comprehensive Income	80,488
Accretion (Dilution) of Noncontrolling Interest	(2,427)			(2,427)
Stock-based compensation	17,440		17,440
Cash dividends of $0.34, $0.34, $0.36, per common share in 2013, 2014 and 2015 respectively	(23,230)			(23,230)
Net proceeds from exercise of stock options	3,458	7	9,533			(6,082)
Tax benefit (cost) from exercise of stock options	2,580		2,580
Proceeds from stock issued under Employee Stock Purchase Plan	1,335			48		1,287
Repurchase of common shares for treasury	(25,918)					(25,918)
Ending Balance at Jun. 30, 2015	$ 1,584,810	$ 760	$ 350,256	$ 1,796,361	$ (77,114)	$ (485,453)