Financial Highlights (Narrative) (Details)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Financial Highlights [Abstract]
TotalLTIPandOPUnitsOutstanding	641,314	623,052
Percentage Of Long Term Incentive Plan Units and Operating Partnership Units On Total Shares And Units	1.88%	2.39%
Total Return After Incentive Fees Assuming Conversion Of All LTIP Units at Time of Issuance	2.51%	3.69%
Market based total return	2.96%	8.44%