Real Estate Properties - Summary of Properties Held-for-sale (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Liabilities related to properties held for sale	$ 81	$ 0
Held-for-sale \| Georgetown-Green and Harris
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Real estate properties	52,819
Rents receivable	749
Other assets, net	2,373
Assets held for sale	55,941
Accounts payable and accrued expenses	68
Rent collected in advance	13
Liabilities related to properties held for sale	$ 81

Amount classified as assets attributable to disposal group held for sale or disposed of.

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