Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Property management fees
Disaggregation of Revenue [Line Items]
Other fee income	$ 436	$ 588	$ 1,013	$ 1,226
Asset management fees
Disaggregation of Revenue [Line Items]
Other fee income	271	272	556	517
Leasing commissions and other fees
Disaggregation of Revenue [Line Items]
Other fee income	6	0	107	22
Other fee income
Disaggregation of Revenue [Line Items]
Other fee income	$ 713	$ 860	$ 1,676	$ 1,765