Shareholders' Equity (Common And Equity Stock) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Shareholders' Equity [Abstract]
Aggregate number of common stock repurchased in the period			0	0
Distributions paid to common shareholders	$ 13,500	$ 13,500	$ 26,948	$ 26,893
Dividends declared per common share	$ 0.50	$ 0.50	$ 1.00	$ 1.00
Equity stock, shares authorized	100,000,000		100,000,000