MORTGAGE NOTES PAYABLE (Line of Credit) (Details)					12 Months Ended
	Dec. 03, 2021 USD ($)	Oct. 29, 2021 USD ($)	Sep. 30, 2015	Jul. 31, 2014 USD ($)	Dec. 31, 2022 USD ($) property	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Mar. 07, 2005 item
Line of Credit
Interest expense					$ 15,045,477	$ 13,629,463	$ 13,705,415
Hamilton Essex 81
Line of Credit
Interest expense					412,329	$ 246,339	$ 299,161
Number of properties in which borrowing amount collateralized | item								1
Mortgages payable | Hamilton Essex 81
Line of Credit
Term of debt			10 years
Mortgages payable | LIBOR | Hamilton Essex 81
Line of Credit
Variable interest rate spread			2.18%
Line of Credit
Line of Credit
Maximum borrowings		$ 25,000,000		$ 25,000,000
Maximum borrowings during modification period		$ 17,000,000
Term of debt		3 years		3 years
Payment on line of credit	$ 17,000,000
Amount of refinancing costs		$ 179,000
Extension fees paid				$ 128,000	$ 37,500
Number of properties in which borrowing amount collateralized | property					23
Line of Credit | Current covenants
Line of Credit
Leverage ratio		65.00%
Tangible net worth		$ 200
Debt yield		9.50%
Debt service coverage ratio		1.60
Line of Credit | Revised covenants in place until September 30, 2022
Line of Credit
Leverage ratio		70.00%
Tangible net worth		$ 175
Debt yield		8.50%
Debt service coverage ratio		1.35
Line of Credit | Revised Covenants in place until December 31, 2022
Line of Credit
Debt yield		9.00%
Line of Credit | Federal Funds Rate
Line of Credit
Variable interest rate spread				0.005%
Line of Credit | LIBOR
Line of Credit
Additional applicable margin rate				2.50%
Variable interest rate spread		3.00%		1.00%
Line of Credit | Minimum
Line of Credit
Pledged interest ownership percentage					49.00%
Commitment fee for unused amount (as a percent)					0.15%
Debt yield					8.30%
Line of Credit | Maximum
Line of Credit
Pledged interest ownership percentage					100.00%
Commitment fee for unused amount (as a percent)					0.20%
Debt yield		9.00%