CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income attributable to the Company	$ 5,190,893	$ 52,369
Adjustments to reconcile net income attributable to the Company to net cash used in operating activities:
Depreciation expense	3,849	3,849
Net income from other investments, excluding impairment losses	(217,703)	(278,616)
Equity loss from operations of residential real estate partnership	143,889	117,176
Equity (gain) from sale of residential real estate partnership, net	(5,473,887)	0
Net losses (gains) from investments in marketable securities	20,761	(126,512)
Net gain attributable to noncontrolling interest	9,250	10,050
Deferred income tax expense	27,205	0
Changes in assets and liabilities:
Other assets and other receivables	53,233	112,451
Accounts payable, accrued expenses and other liabilities	(43,594)	67,319
Total adjustments	(5,476,997)	(94,283)
Net cash used in operating activities	(286,104)	(41,914)
CASH FLOWS FROM INVESTING ACTIVITIES:
Net proceeds from sales and redemptions of securities	993,516	1,928,958
Investments in marketable securities	(1,323,552)	(1,941,697)
Distribution from investment in residential real estate partnership	7,250,000	130,000
Distributions from other investments	579,304	568,029
Contributions to other investments	(344,953)	(152,737)
Proceeds from collections of mortgage loans and notes receivables	0	78,000
Distribution from affiliate	193,286	0
Purchases and improvements of properties	(6,677)	(660)
Net cash provided by investing activities	7,340,924	609,893
CASH FLOWS FROM FINANCING ACTIVITIES:
Margin borrowings (repayments)	10,225,318	(48,803)
Dividend paid	(2,533,230)	(501,196)
Repayment of note payable to affiliate	(210,000)	0
Proceeds from stock options exercised	91,895	0
Net cash provided by (used in) financing activities	7,573,983	(549,999)
Net increase in cash and cash equivalents	14,628,803	17,980
Cash and cash equivalents at beginning of the period	5,223,995	3,019,463
Cash and cash equivalents at end of the period	19,852,798	3,037,443
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash paid during the year for interests	21,000	15,000
Cash paid during the year for income taxes	$ 0	$ 0