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NOTES RECEIVABLE FROM MOBILE HOME PARKS (MHP Notes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Notes Receivable from Mobile Home Parks
Notes Receivable
Unamortized finance fees	$ 200	$ 0
Charge offs	0	0
Allowance for loan losses	$ 0	$ 0
Notes Receivable from Mobile Home Parks | Credit concentration risk | Independent third party and affiliates
Notes Receivable
Concentration risk percentage	52.90%	38.30%

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