Shareholders' Equity (Schedule Of Dividends Paid) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended		0 Months Ended				1 Months Ended		0 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Jul. 02, 2014 Common shares	May 01, 2014 Common shares	Apr. 03, 2014 Common shares	Jan. 02, 2014 Common shares	Oct. 31, 2013 Common shares	Jul. 31, 2013 Common shares	Oct. 02, 2014 Subsequent event Common shares
Dividends, Common Stock [Abstract]
Dividends paid per common share	$ 0.225	$ 0.167	$ 0.559	$ 0.292	$ 0.225		$ 0.167	$ 0.167	$ 0.167	$ 0.167	$ 0.225
Payment of quarterly dividends					$ 21,870		$ 16,495	$ 16,732
Dividends declared per share						$ 0.225