CONSOLIDATED BALANCE SHEETS - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Investment properties, net of accumulated depreciation:
Office building and other commercial property under construction	$ 1,431,539	$ 925,963
Total investment properties, net	1,431,539	925,963
Cash and cash equivalents	4,883,923	15,382,596
Investments in marketable securities	3,406,328	3,473,521
Other investments	4,940,403	5,585,666
Investment in affiliate	1,206,782	1,442,423
Loans, notes and other receivables	1,419,760	2,519,570
Investment in residential real estate partnership	3,552,896	3,627,598
Other assets	49,937	55,152
TOTAL ASSETS	20,891,568	33,012,489
LIABILITIES
Note payable to affiliate	650,000	1,000,000
Margin payable	0	9,916,774
Dividends payable	503,624	506,646
Accounts payable, accrued expenses and other liabilities	206,402	373,649
Amounts due to the Adviser for incentive fee	0	81,333
Deferred income tax payable	107,237	77,485
TOTAL LIABILITIES	1,467,263	11,955,887
STOCKHOLDERS' EQUITY
Excess common stock, $1 par value; 100,000 shares authorized: no shares issued	0	0
Common stock, $1 par value; 1,050,000 shares authorized, 1,013,292 shares issued and 1,007,248 shares outstanding as of December 31, 2020; 1,013,292 shares issued and outstanding as of December 31, 2019	1,013,292	1,013,292
Additional paid-in capital	23,859,686	23,859,686
Less: Treasury shares at cost 6,044 shares as of December 31, 2020 and zero as of December 31, 2019	(66,392)	0
Undistributed gains from sales of properties, net of losses	53,632,495	54,136,119
Undistributed losses from operations	(59,256,052)	(58,203,938)
Total stockholders' equity	19,183,029	20,805,159
Noncontrolling interest	241,276	251,443
TOTAL EQUITY	19,424,305	21,056,602
TOTAL LIABILITIES AND EQUITY	$ 20,891,568	$ 33,012,489