Consolidated Condensed Statements Of Equity (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012		Mar. 31, 2011
Cash dividends declared per share	$ 0.01		$ 0.01
Common stock repurchased	$ 46,624	[1]	$ 471	[1]
Stock Repurchase Authorization [Member]
Common stock repurchased	$ 44,500

[1] First quarter 2012 includes $44.5 million repurchased under the share repurchase program launched in fourth quarter 2011.