Shareholders' Equity (Schedule Of Share Capital Roll Forward) (Details)	3 Months Ended	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2011	Dec. 31, 2010
Shareholders' Equity [Abstract]
Total shares issued at beginning of period		40,003,642
Total shares issued at end of period	40,003,642	40,003,642
Treasury shares issued, balance at beginning of period		1,914,416
Shares repurchased	0	969,163
Shares issued out of treasury		(1,025,494)
Total treasury shares at end of period	1,858,085	1,858,085
Total shares outstanding at end of period	38,145,557	38,145,557	38,089,226