Condensed Statement of Shareholders' Equity (USD $) In Thousands, unless otherwise specified	Total	Capital in Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive Loss	Class A Common Stock	Class B Common Stock
Balances at Dec. 31, 2011	$ 840,729	$ 350,158	$ 495,549	$ (5,517)	$ 521	$ 18
Increase (Decrease) in Shareholders' Equity
Stock options and restricted stock issued	3,551	3,548			3
Stock based compensation expense	7,589	7,589
Income tax effect of stock option exercises	756	756
Dividends ($0.24 per share)	(13,160)		(13,160)
Net earnings	133,040		133,040
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, Net of Tax	3,781			3,781
Balances at Sep. 30, 2012	$ 976,286	$ 362,051	$ 615,429	$ (1,736)	$ 524	$ 18