Real Estate, net and Real Estate Held for Sale - Summary of Assets And Liabilities Held for Sale (Details) - USD ($)	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019
Assets
Real estate, net	$ 182,356,000	$ 178,564,000
Deferred leasing costs and intangible assets, net	10,109,000	5,890,000
Total assets held for sale	192,465,000	184,454,000
Liabilities
Intangible liabilities, net	10,787,000	294,000
Total liabilities related to assets held for sale	10,787,000	294,000
Assets held for sale, discontinued operations	$ 0	$ 0	$ 183,895,000

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Finite-Lived Intangible Assets And Deferred Leasing Costs, Liabilities Related to Assets Held-for-sale, Not Part of Disposal Group

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Liabilities Related to Assets Held-for-sale, Not Part of Disposal Group [Abstract]

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

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Carrying amount as of the balance sheet date of investments in land and buildings held for sale, excluding real estate considered to be inventory of the entity.

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