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SALE OF PROPERTIES AND PROPERTY HELD-FOR-SALE (Details) - USD ($)					3 Months Ended		6 Months Ended		9 Months Ended
	Jun. 17, 2022	May 02, 2022	Mar. 22, 2022	Jun. 17, 2021	Sep. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Sep. 30, 2022	Feb. 28, 2022	Dec. 31, 2021
SALES OF PROPERTIES AND PROPERTY HELD-FOR-SALE
Prepayment costs on debt						$ 799,000		$ 799,000
Properties held-for-sale							$ 3,766,000				$ 1,270,000
Properties disposed of by sale
SALES OF PROPERTIES AND PROPERTY HELD-FOR-SALE
Gross Sales Price							23,300,000	40,510,000
Gain on sale of real estate, net							12,699,000	$ 21,491,000
Properties disposed of by sale | Four restaurant properties located in Pennsylvania
SALES OF PROPERTIES AND PROPERTY HELD-FOR-SALE
Write-off of unbilled rent receivable, as a reduction to Gain on sale of real estate, net			$ 512,000
Properties disposed of by sale | Wendy's restaurant property, Palmyra, Pennsylvania
SALES OF PROPERTIES AND PROPERTY HELD-FOR-SALE
Gross Sales Price			2,555,000
Gain on sale of real estate, net			1,200,000
Properties disposed of by sale | Wendy's restaurant property 1, Reading, Pennsylvania
SALES OF PROPERTIES AND PROPERTY HELD-FOR-SALE
Gross Sales Price			2,525,000
Gain on sale of real estate, net			1,184,000
Properties disposed of by sale | Wendy's Restaurant Property 2, Reading, Pennsylvania
SALES OF PROPERTIES AND PROPERTY HELD-FOR-SALE
Gross Sales Price			2,485,000
Gain on sale of real estate, net			1,175,000
Properties disposed of by sale | Wendy's Restaurant Property, Trexlertown, Pennsylvania
SALES OF PROPERTIES AND PROPERTY HELD-FOR-SALE
Gross Sales Price			2,435,000
Gain on sale of real estate, net			$ 1,090,000
Properties disposed of by sale | Orlando Baking industrial property, Columbus, Ohio
SALES OF PROPERTIES AND PROPERTY HELD-FOR-SALE
Gross Sales Price		$ 8,500,000
Gain on sale of real estate, net		$ 6,925,000
Properties disposed of by sale | Haverty's retail property, Fayetteville, Georgia
SALES OF PROPERTIES AND PROPERTY HELD-FOR-SALE
Gross Sales Price	$ 4,800,000
Gain on sale of real estate, net	1,125,000
Mortgage Prepaid on Sale	1,563,000
Write-off of unbilled rent receivable, as a reduction to Gain on sale of real estate, net	7,000
Write-off of unamortized lease assets, as a reduction to Gain on sale of real estate, net	1,000
Write-off of unamortized lease liabilities, as a reduction to Gain on sale of real estate, net	$ 5,000
Properties disposed of by sale | Whole Foods retail property & parking lot, West Hartford, Connecticut
SALES OF PROPERTIES AND PROPERTY HELD-FOR-SALE
Gross Sales Price				$ 40,510,000
Gain on sale of real estate, net				21,491,000
Mortgage Prepaid on Sale				15,403,000
Prepayment costs on debt				799,000
Write-off of unbilled rent receivable, as a reduction to Gain on sale of real estate, net				1,148,000
Write-off of unamortized lease assets, as a reduction to Gain on sale of real estate, net				$ 967,000
Properties disposed of by sale | Retail property located in Columbus, Ohio | Forecast
SALES OF PROPERTIES AND PROPERTY HELD-FOR-SALE
Gain on sale of real estate, net					$ 4,000,000				$ 4,000,000
Properties held-for-sale | Retail property located in Columbus, Ohio
SALES OF PROPERTIES AND PROPERTY HELD-FOR-SALE
Contracted sale price of property										$ 8,300,000
Properties held-for-sale | Retail property located in Columbus, Ohio | Land, building and improvements
SALES OF PROPERTIES AND PROPERTY HELD-FOR-SALE
Properties held-for-sale							$ 3,766,000

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