Long-Term Incentive Plan Units Long-Term Incentive Plan Units (Unvested LTIP Units) (Details) - Long-Term Incentive Plan Units [Member] - shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Schedule of Unvested LTIP Units [Line Items]
Number of OP LTIP Units (in units)	46,128	39,432
Director [Member]
Schedule of Unvested LTIP Units [Line Items]
Number of OP LTIP Units (in units)	14,552	14,440
Grant Date	Sep. 11, 2019	Sep. 12, 2018
Vesting Date(1)	Sep. 10, 2020	Sep. 11, 2019
Vest December 13, 2020 [Member] | Dedicated or partially dedicated personnel [Member]
Schedule of Unvested LTIP Units [Line Items]
Number of OP LTIP Units (in units)	12,818
Grant Date	Dec. 13, 2019
Vesting Date(1)	Dec. 13, 2020
Vest December 13, 2021 [Member] | Dedicated or partially dedicated personnel [Member]
Schedule of Unvested LTIP Units [Line Items]
Number of OP LTIP Units (in units)	10,067
Grant Date	Dec. 13, 2019
Vesting Date(1)	Dec. 13, 2021
Vest December 11, 2019 [Member] | Dedicated or partially dedicated personnel [Member]
Schedule of Unvested LTIP Units [Line Items]
Number of OP LTIP Units (in units)		8,692
Grant Date		Dec. 11, 2018
Vesting Date(1)		Dec. 11, 2019
Vest December 11, 2020 [Member] | Dedicated or partially dedicated personnel [Member]
Schedule of Unvested LTIP Units [Line Items]
Number of OP LTIP Units (in units)	8,691	8,691
Grant Date	Dec. 11, 2018	Dec. 11, 2018
Vesting Date(1)	Dec. 11, 2020	Dec. 11, 2020
Vest March 7, 2019 [Member] | Dedicated or partially dedicated personnel [Member]
Schedule of Unvested LTIP Units [Line Items]
Number of OP LTIP Units (in units)		1,723
Grant Date		Mar. 07, 2018
Vesting Date(1)		Mar. 07, 2019
Vest December 12, 2019 [Member] | Dedicated or partially dedicated personnel [Member]
Schedule of Unvested LTIP Units [Line Items]
Number of OP LTIP Units (in units)		5,886
Grant Date		Dec. 12, 2017
Vesting Date(1)		Dec. 12, 2019