Dispositions and Impairment (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($) building
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from the sale of real estate				$ 1,200,000
Gain (loss) on sale of real estate, net	$ 0	$ 0	$ 1,991,000	$ (37,000)
Number of assets disposed | building				3
Impairment			0	$ 0
Land in Miami, Florida
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from the sale of real estate			7,600,000
Gain (loss) on sale of real estate, net			$ 2,000,000.0