CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)	Jun. 30, 2018	Dec. 31, 2017
Investment properties, net of accumulated depreciation:
Office building and other commercial property	$ 869,563	$ 857,464
Total investment properties, net	869,563	857,464
Cash and cash equivalents	19,751,644	5,223,995
Investments in marketable securities	5,190,532	4,549,745
Other investments	5,656,380	6,412,120
Investment in affiliate	1,614,967	1,757,607
Loans, notes and other receivables	1,036,256	1,561,750
Investment in residential real estate partnership	99,186	1,685,978
Other assets	153,457	108,020
TOTAL ASSETS	34,371,985	22,156,679
LIABILITIES
Margin payable	9,912,841	267,198
Accounts payable, accrued expenses and other liabilities	114,093	119,171
Amounts due to Adviser for incentive fee	108,210	43,279
Note payable to affiliate	1,340,000	1,550,000
Deferred income taxes payable	117,732	84,153
TOTAL LIABILITIES	11,592,876	2,063,801
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, 1,046,393 and 1,035,493 shares issued as of June 30, 2018 and December 31, 2017, respectively	1,046,393	1,035,493
Additional paid-in capital	24,157,986	24,076,991
Less: Treasury shares at cost 33,101 shares	(340,281)	(340,281)
Undistributed gains from sales of properties, net of losses	55,149,410	52,208,753
Undistributed losses from operations	(57,478,224)	(57,120,990)
Total stockholders’ equity	22,535,284	19,859,966
Noncontrolling interest	243,825	232,912
TOTAL EQUITY	22,779,109	20,092,878
TOTAL LIABILITIES AND EQUITY	$ 34,371,985	$ 22,156,679