Long-Term Incentive Plan Units (Roll-Forward Of Company's LTIP Units Outstanding) (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Exercised	(2,475)	(1,947)	(2,475)	(1,947)
Long-Term Incentive Plan Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
LTIP Units Outstanding, beginning of period	449,938	429,314	449,938	429,314
Granted	8,403	7,425	8,403	7,425
Exercised	(2,475)	(1,947)	(2,475)	(1,947)
LTIP Units Outstanding, end of period	455,866	434,792	455,866	434,792
LTIP Units Vested and Outstanding	426,070	408,753	426,070	408,753
Manager [Member] | Long-Term Incentive Plan Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
LTIP Units Outstanding, beginning of period	375,000	375,000	375,000	375,000
Granted	0	0	0	0
Exercised	0	0	0	0
LTIP Units Outstanding, end of period	375,000	375,000	375,000	375,000
LTIP Units Vested and Outstanding	375,000	375,000	375,000	375,000
Non-Manager [Member] | Long-Term Incentive Plan Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
LTIP Units Outstanding, beginning of period	74,938	54,314	74,938	54,314
Granted	8,403	7,425	8,403	7,425
Exercised	(2,475)	(1,947)	(2,475)	(1,947)
LTIP Units Outstanding, end of period	80,866	59,792	80,866	59,792
LTIP Units Vested and Outstanding	51,070	33,753	51,070	33,753