Common Share Capitalization (Summary Of Common Shares Outstanding) (Details)	0 Months Ended		12 Months Ended			41 Months Ended
	Sep. 08, 2014	May 14, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Shares Outstanding, period begin			25,428,186	20,370,469	16,447,651
Stock Issued During Period, Shares, New Issues	8,000,000	5,000,000.0	8,000,000	5,000,000	4,025,000
Shares issued in connection with incentive fee payment			19,670	55,935	53,207
Shares repurchased			0	0	(156,639)	(217,619)
LTIP Units Exercised			1,822	1,782	1,250
Common Shares Outstanding, period end			33,449,678	25,428,186	20,370,469	33,449,678