Long-Term Incentive Plan Units (Roll-Forward Of Company's LTIP Units Outstanding) (Details) (Long-Term Incentive Plan Units [Member])	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
LTIP Units Outstanding	397,096	390,500
Granted	0	0
Exercised	0	0
LTIP Units Outstanding	397,096	390,500
LTIP Units Vested and Outstanding	389,250	383,750
Manager [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
LTIP Units Outstanding	375,000	375,000
Granted	0	0
Exercised	0	0
LTIP Units Outstanding	375,000	375,000
LTIP Units Vested and Outstanding	375,000	375,000
Non-Manager [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
LTIP Units Outstanding	22,096	15,500
Granted	0	0
Exercised	0	0
LTIP Units Outstanding	22,096	15,500
LTIP Units Vested and Outstanding	14,250	8,750