CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES:
Net (loss) income attributable to the Company	$ (1,052,114)	$ 269,870
Adjustments to reconcile net (loss) income attributable to the Company to net cash used in operating activities:
Depreciation expense	15,398	15,399
Non-employee stock compensation expense	0	8,880
Income from other investments, excluding impairment losses	(303,489)	(806,074)
Other than temporary impairment losses from other investments	407,329
Equity loss (gain) from operations of residential real estate partnership	74,702	(4,455)
Net losses (gains) from investments in marketable securities	22,703	(278,223)
Net (loss) gain attributable to noncontrolling interest	(10,167)	11,073
Deferred income tax expense	30,024	29,597
Changes in assets and liabilities:
Other assets and other receivables	45,438	(10,509)
Accounts payable, accrued expenses and other liabilities	(384,434)	(33,758)
Total adjustments	(102,496)	(1,068,070)
Net cash used in operating activities	(1,154,610)	(798,200)
CASH FLOWS FROM INVESTING ACTIVITIES:
Net proceeds from sales and redemptions of securities	1,345,471	2,042,878
Investments in marketable securities	(1,080,295)	(1,862,458)
Distribution from investment in residential real estate partnership, Orlando	0	6,187
Distributions from other investments	749,782	2,058,928
Contributions to investment in residential real estate partnership, Fort Myers	0	(3,423,143)
Contributions to other investments	(414,303)	(1,046,718)
Proceeds from collections of mortgage loans and notes receivables	1,200,000	0
Distribution from affiliate	220,899	220,899
Purchases and improvements of properties	(385,121)	(66,162)
Additions in mortgage loans and notes receivable	(140,683)	(700,000)
Net cash provided by (used in) by investing activities	1,495,750	(2,769,589)
CASH FLOWS FROM FINANCING ACTIVITIES:
Margin repayments	(9,916,775)	58,857
Dividends paid	(506,646)	(506,646)
Repayment of note payable to affiliate	(350,000)	(340,000)
Purchase of treasury shares	(66,392)	0
Net cash used in financing activities	(10,839,813)	(787,789)
Net decrease in cash and cash equivalents	(10,498,673)	(4,355,578)
Cash and cash equivalents at beginning of the year	15,382,596	19,738,174
Cash and cash equivalents at end of the year	4,883,923	15,382,596
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash paid during the year for interest	30,000	56,000
NONCASH INVESTING AND FINANCING ACTIVITIES:
Dividends declared but not paid during the year	503,624	506,646
Treasury stock retired during the year	$ 0	$ 340,281