Common Share Capitalization (Summary Of Common Shares Outstanding) (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Shares Outstanding, period begin	32,962,979	33,449,678	33,126,012	33,449,678
Shares repurchased	(219,623)	0	(382,656)	0
Common Shares Outstanding, period end	32,743,356	33,449,678	32,743,356	33,449,678