Shareholders' Equity (Schedule Of Dividends Paid) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		0 Months Ended	1 Months Ended		0 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Jan. 02, 2014 Common shares	Oct. 31, 2013 Common shares	Jul. 31, 2013 Common shares	Apr. 03, 2014 Subsequent event Common shares
Dividends, Common Stock [Abstract]
Dividends paid per common share	$ 0.500	$ 0.375	$ 0.500	$ 0.50	$ 0.50	$ 0.50
Payment of quarterly dividends			$ 16,732