INVESTMENTS IN UNCONSOLIDATED JOINT VENTURES - Balance sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
ASSETS
Real estate, net	$ 294,536	$ 279,204
Cash and cash equivalents	4,310	6,515	$ 9,196	$ 11,496
Restricted cash	20,535	9,554	$ 9,474	$ 2,529
Prepaid expenses and other assets, net	4,126	2,703
Intangible assets, net	8,432	9,172
Total assets	351,389	329,148
LIABILITIES
Accounts payable and accrued expenses	17,864	15,896
Total liabilities	291,163	261,240
STOCKHOLDERS' EQUITY
Accumulated deficit	(25,977)	(9,503)
Accumulated other comprehensive loss	(1,343)	(2,159)
Total liabilities and stockholders' equity	351,389	329,148
Our investments in unconsolidated joint ventures	17,938	19,379
Unconsolidated Joint Ventures
ASSETS
Real estate, net	164,143	167,749
Cash and cash equivalents	1,244	1,344
Restricted cash	891	766
Tenant and other receivables, net	225	254
Prepaid expenses and other assets, net	315	204
Intangible assets, net	21,527	24,006
Total assets	188,345	194,323
LIABILITIES
Mortgages payable, net	112,934	114,218
Accounts payable and accrued expenses	1,849	1,705
Total liabilities	114,783	115,923
STOCKHOLDERS' EQUITY
Members' equity	87,654	92,070
Accumulated deficit	(14,092)	(11,943)
Accumulated other comprehensive loss		(1,727)
Total members' equity	73,562	78,400
Total liabilities and stockholders' equity	188,345	194,323
Our investments in unconsolidated joint ventures	$ 17,938	$ 19,379