INVESTMENTS IN MARKETABLE SECURITIES (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Marketable Securities, Fair Value	$ 3,406,328	$ 3,473,521
Marketable Securities, Unrealized Gain (Loss)	93,000	236,000
Real Estate Investment Trusts [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Marketable Securities Cost Basis	1,744,000	1,800,000
Marketable Securities, Fair Value	1,664,000	1,860,000
Marketable Securities, Unrealized Gain (Loss)	80,000	60,000
Mutual Funds, ETF & other [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Marketable Securities Cost Basis	210,000	221,000
Marketable Securities, Fair Value	316,000	257,000
Marketable Securities, Unrealized Gain (Loss)	106,000	36,000
Other Equity Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Marketable Securities Cost Basis	685,000	885,000
Marketable Securities, Fair Value	813,000	883,000
Marketable Securities, Unrealized Gain (Loss)	128,000	(2,000)
Total Equity Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Marketable Securities Cost Basis	2,639,000	2,906,000
Marketable Securities, Fair Value	2,793,000	3,000,000
Marketable Securities, Unrealized Gain (Loss)	154,000	94,000
Debt Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Marketable Securities Cost Basis	584,000	477,000
Marketable Securities, Fair Value	613,000	474,000
Marketable Securities, Unrealized Gain (Loss)	29,000	(3,000)
Total [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Marketable Securities Cost Basis	3,223,000	3,383,000
Marketable Securities, Fair Value	3,406,000	3,474,000
Marketable Securities, Unrealized Gain (Loss)	$ 183,000	$ 91,000