Long-Term Incentive Plan Units (Roll-Forward of Company's LTIP Units Outstanding) (Details) - Long-Term Incentive Plan Units [Member] - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
LTIP Units Outstanding, beginning of period	560,527	521,371	545,716	521,371
Granted	22,840	14,552	37,651	14,552
Exercised	(3,638)	(3,610)	(3,638)	(3,610)
LTIP Units Outstanding, end of period	579,729	532,313	579,729	532,313
OP LTIP Units Unvested and Outstanding end of period	69,227	37,821	69,227	37,821
OP LTIP Units Vested and Outstanding end of period	510,502	494,492	510,502	494,492
Manager [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
LTIP Units Outstanding, beginning of period	365,518	375,000	365,518	375,000
Granted	0	0	0	0
Exercised	0	0	0	0
LTIP Units Outstanding, end of period	365,518	375,000	365,518	375,000
OP LTIP Units Unvested and Outstanding end of period	0	0	0	0
OP LTIP Units Vested and Outstanding end of period	365,518	375,000	365,518	375,000
Non-Manager [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
LTIP Units Outstanding, beginning of period	195,009	146,371	180,198	146,371
Granted	22,840	14,552	37,651	14,552
Exercised	(3,638)	(3,610)	(3,638)	(3,610)
LTIP Units Outstanding, end of period	214,211	157,313	214,211	157,313
OP LTIP Units Unvested and Outstanding end of period	69,227	37,821	69,227	37,821
OP LTIP Units Vested and Outstanding end of period	144,984	119,492	144,984	119,492