STATEMENT OF STOCKHOLDERS' EQUITY (Unaudited) (USD $) In Thousands	Total	Common Stock Member	Additional Paid In Capital Member	Retained Earnings Member	Accumulated Other Comprehensive Income Member	Treasury Stock Member
Beginning Balance at Dec. 31, 2010		$ 48,558	$ 130,093	$ 1,052,580	$ (2,813)	$ (88,194)
Net earnings				126,354
Other comprehensive income, net					(62,318)
Dividends paid				(14,893)
Stock options exercised, net		321	5,312			8,648
Share-based compensation			8,046			1,575
Repurchases of common stock						(8,178)
Other			(259)			259
Ending Balance at Dec. 31, 2011	1,205,091	48,879	143,192	1,164,041	(65,131)	(85,890)
Net earnings	75,351			75,351
Other comprehensive income, net	28,857				28,857
Dividends paid				(12,201)
Stock options exercised, net		311	7,247			7,619
Share-based compensation			3,447			4,022
Repurchases of common stock	4,974					(4,974)
Other			(414)			414
Ending Balance at Sep. 30, 2012	$ 1,314,770	$ 49,190	$ 153,472	$ 1,227,191	$ (36,274)	$ (78,809)