Earnings per Share (Summary of Basic and Diluted Earnings per Share Footnote) (Details)	3 Months Ended	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2014
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Weighted average shares outstanding-diluted	37,251,769	37,039,603
Operating Partnership Awards Outstanding [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Weighted average shares outstanding-diluted	8,104,000	7,939,000