Consolidated Condensed Statements Of Cash Flow (Parenthetical) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012
Shares repurchased under the share repurchase program, value	$ 91,395	[1]	$ 98,902	[1]
Stock Repurchase Authorization [Member]
Shares repurchased under the share repurchase program, value	$ 87,600		$ 96,400

[1] 2013 and 2012 include $87.6 million and $96.4 million, respectively, repurchased under the share repurchase program launched in fourth quarter 2011.