Consolidated Condensed Statements Of Cash Flow (Parenthetical) - USD ($) $ in Thousands		6 Months Ended
		Jun. 30, 2016	Jun. 30, 2015
Shares repurchased under the share repurchase program, value	[1]	$ 89,698	$ 20,031
Stock Repurchase Authorization
Shares repurchased under the share repurchase program, value		$ 86,300	$ 15,800

[1] 2016 and 2015 include $ 86 .3 million and $ 15.8 million, respectively, repurchased under share repurchase programs.