Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2013

Earnings Per Share [Abstract]

Schedule Of Reconciliation Of Shares Outstanding For Basic And Diluted Earnings Per Share

	For the Three Months Ended		For the Nine Months Ended
	September 30,		September 30,
	2013	2012	2013	2012
Shares outstanding for basic earnings per share:	52,450	54,938	53,562	55,074
Shares outstanding for diluted earnings per share:
Shares outstanding for basic earnings per share	52,450	54,938	53,562	55,074
Dilutive effect of share-based payment awards	792	1,150	829	1,196
	53,242	56,088	54,391	56,270

Schedule Of Number Of Anti-Dilutive Stock Options

	For the Three Months Ended		For the Nine Months Ended
	September 30,		September 30,
	2013	2012	2013	2012
Weighted average number of shares underlying anti-dilutive options	561	380	530	713