REAL ESTATE SALES - Assets and Liabilities (Details) $ in Thousands	Sep. 30, 2020 USD ($) numberOfProperties	Dec. 31, 2019 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Real estate held for sale, net	$ 0	$ 18,594
Total notes payable, net	$ 0	13,948
Held-for-Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of real estate properties | numberOfProperties	0
Total real estate, at cost	$ 0	20,602
Accumulated depreciation and amortization	0	(2,008)
Real estate held for sale, net	0	18,594
Other assets	0	760
Total assets related to real estate held for sale	0	19,354
Total notes payable, net	0	13,948
Other liabilities	0	1,057
Total liabilities related to real estate held for sale	$ 0	$ 15,005