FAIR VALUE DISCLOSURES - Schedule of Assets and Liabilities at Fair Value (Details) - Recurring Basis - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Real estate equity securities	$ 84,365	$ 81,439
Asset derivative		12
Liability derivative - foreign currency collar		(179)
Interest rate caps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset derivative	8
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Real estate equity securities	84,365	81,439
Asset derivative		0
Liability derivative - foreign currency collar		0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Interest rate caps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset derivative	0
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Real estate equity securities	0	0
Asset derivative		12
Liability derivative - foreign currency collar		(179)
Significant Other Observable Inputs (Level 2) | Interest rate caps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset derivative	8
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Real estate equity securities	0	0
Asset derivative		0
Liability derivative - foreign currency collar		$ 0
Significant Unobservable Inputs (Level 3) | Interest rate caps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset derivative	$ 0