Net Income Per Share (Reconciliation Between Basic And Diluted Weighted Average Shares Outstanding) (Details) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Basic weighted average shares outstanding	71,568	70,479	71,430	70,175
Diluted weighted average shares outstanding	72,643	72,183	72,613	72,157
Stock Options [Member]
Incremental Common Shares Attributable to Share-based Payment Arrangements	294	819	314	859
Restricted Shares/Units [Member]
Incremental Common Shares Attributable to Share-based Payment Arrangements	781	885	869	1,123