RENTAL INCOME (Concentration) (Details)	3 Months Ended
Mar. 31, 2021
Commercial rental income \| Major tenant \| Staples and Trader Joes
Concentration Risk
Concentration risk percentage	25.00%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration