CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (Unaudited) (USD $) In Thousands	Common Stock	Capital in Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive Loss	Total
Balance at Dec. 31, 2011	$ 22,119		$ 753,119	$ (12,646)	$ 762,592
Balance (in shares) at Dec. 31, 2011	221,188
Stock issued for stock incentive plans, net	110	6,413			6,523
Stock issued for stock incentive plans, net (in shares)	1,106
Stock purchased and retired	(201)	(9,053)	(21,319)		(30,573)
Stock purchased and retired (in shares)	(2,009)
Net income			219,055		219,055
Pension adjustment, net of taxes				318	318
Foreign currency translation, net of taxes				195	195
Unrealized loss on securities, net of taxes				(118)	(118)
Dividends declared			(52,623)		(52,623)
Excess tax benefits for share- based payments		2,584			2,584
Three-for-two stock split	(56)	56
Three-for-two stock split (in shares)	(563)
Balance at Sep. 30, 2012	$ 21,972		$ 898,232	$ (12,251)	$ 907,953
Balance (in shares) at Sep. 30, 2012	219,722