CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Preferred stock	Common Stock	Additional Paid-In Capital	Retained Earnings	Treasury Stock
Balance, start of year (value) at Jun. 30, 2011			$ 1,008	$ 361,131	$ 782,848
Balance, start of year (value) at Jun. 30, 2011						$ (309,585)
Shares, beginning of year at Jun. 30, 2011			100,766,173
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued for equity-based payment arrangements (shares)			594,428
Shares issued for equity-based payment arrangements (value)			$ 6
Shares issued upon exercise of stock options (value)				10,998
Tax withholding related to share based compensation				(4,112)
Shares issued for Employee Stock Purchase Plan (shares)			121,860
Shares issued for Employee Stock Purchase Plan (value)			$ 1	3,321
Tax benefits from share-based compensation (value)				3,631
Stock-based compensation expense (value)				6,950
Net Income	$ 152,040				152,040
Dividends (value)					(38,128)
Purchase of treasury shares						(34,371)
Shares, end of year at Jun. 30, 2012			101,482,461
Balance, end of year (value) at Jun. 30, 2012	935,738		$ 1,015	381,919	896,760
Balance, end of year (value) at Jun. 30, 2012						(343,956)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred Stock, Shares Outstanding		0
Balance, start of year (value) at Jun. 30, 2012						(343,956)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued for equity-based payment arrangements (shares)			405,270
Shares issued for equity-based payment arrangements (value)			$ 4
Shares issued upon exercise of stock options (value)				6,771
Tax withholding related to share based compensation				(3,926)
Shares issued for Employee Stock Purchase Plan (shares)			106,077
Shares issued for Employee Stock Purchase Plan (value)			$ 1	3,699
Tax benefits from share-based compensation (value)				3,632
Stock-based compensation expense (value)				8,615
Net Income	167,610				167,610
Dividends (value)					(48,202)
Purchase of treasury shares						(58,126)
Shares, end of year at Jun. 30, 2013			101,993,808
Balance, end of year (value) at Jun. 30, 2013	1,015,816		$ 1,020	400,710	1,016,168
Balance, end of year (value) at Jun. 30, 2013	(402,082)					(402,082)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred Stock, Shares Outstanding		0
Balance, start of year (value) at Jun. 30, 2013	(402,082)					(402,082)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued for equity-based payment arrangements (shares)			344,372
Shares issued for equity-based payment arrangements (value)			$ 3
Shares issued upon exercise of stock options (value)				606
Tax withholding related to share based compensation				(6,598)
Shares issued for Employee Stock Purchase Plan (shares)			91,746
Shares issued for Employee Stock Purchase Plan (value)			$ 1	4,283
Tax benefits from share-based compensation (value)				3,420
Stock-based compensation expense (value)				10,091
Net Income	186,715				186,715
Dividends (value)					(71,251)
Purchase of treasury shares						(175,699)
Shares, end of year at Jun. 30, 2014			102,429,926
Balance, end of year (value) at Jun. 30, 2014	967,387		$ 1,024	$ 412,512	$ 1,131,632
Balance, end of year (value) at Jun. 30, 2014	$ (577,781)					$ (577,781)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred Stock, Shares Outstanding		0