FAIR VALUE MEASUREMENTS (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Apr. 30, 2018
FINANCIAL ASSETS
Restricted cash	$ 19,538	$ 5,464	$ 4,225
Carrying Amount
FINANCIAL ASSETS
Cash and cash equivalents	26,579	13,792	11,891
Restricted cash	19,538	5,464	4,225
Mortgage and note receivables	32,810	26,809	25,809
FINANCIAL LIABILITIES
Revolving lines of credit	50,079	57,500	124,000
Notes payable	270,000	145,000	70,000
Mortgages payable	331,376	445,974	509,919
Fair Value
FINANCIAL ASSETS
Cash and cash equivalents	26,579	13,792	11,891
Restricted cash	19,538	5,464	4,225
Mortgage and note receivables	32,810	26,809	25,809
FINANCIAL LIABILITIES
Revolving lines of credit	50,079	57,500	124,000
Notes payable	270,000	145,000	70,000
Mortgages payable	$ 332,471	444,241	510,803
Nonrecurring
Fair Value Measurements on a Nonrecurring Basis [Abstract]
Real estate investments valued at fair value		3,049	52,145
Nonrecurring \| Level 1
Fair Value Measurements on a Nonrecurring Basis [Abstract]
Real estate investments valued at fair value		0	0
Nonrecurring \| Level 2
Fair Value Measurements on a Nonrecurring Basis [Abstract]
Real estate investments valued at fair value		0	0
Nonrecurring \| Level 3
Fair Value Measurements on a Nonrecurring Basis [Abstract]
Real estate investments valued at fair value		$ 3,049	$ 52,145

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