Net Income Per Share (Reconciliation Between Basic And Diluted Weighted Average Shares Outstanding) (Details) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Basic weighted average shares outstanding	71,650	70,506	71,504	70,286
Diluted weighted average shares outstanding	72,755	72,265	72,660	72,194
Stock Options [Member]
Incremental Common Shares Attributable to Share-based Payment Arrangements	263	821	297	847
Restricted Shares/Units [Member]
Incremental Common Shares Attributable to Share-based Payment Arrangements	842	938	859	1,061