CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($)	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Undistributed Gains from Sales of Properties Net of Losses [Member]	Undistributed Losses from Operations [Member]	Treasury Stock [Member]
Balance at Dec. 31, 2014	$ 23,207,089	$ 1,053,926	$ 24,249,844	$ 53,227,696	$ (55,315,000)	$ (9,377)
Balance (in shares) at Dec. 31, 2014		1,053,926				800
Net loss	(1,060,339)				(1,060,339)
Dividend payable - $.50 per share	(517,747)			(517,747)
Non-employee stock option compensation	5,770		5,770
Treasury shares retired						$ 0
Purchase of treasury stock	(214,421)					$ (214,421)
Purchase of treasury stock (in shares)						17,633
Balance at Dec. 31, 2015	21,420,352	$ 1,053,926	24,255,614	52,709,949	(56,375,339)	$ (223,798)
Balance (in shares) at Dec. 31, 2015		1,053,926				18,433
Net loss	(431,427)				(431,427)
Dividend payable - $.50 per share	(501,196)			(501,196)
Non-employee stock option compensation	26,742		26,742
Treasury shares retired	0	$ (18,433)	(205,365)			$ 223,798
Treasury shares retired (in shares)		(18,433)				(18,433)
Purchase of treasury stock	(340,281)					$ (340,281)
Purchase of treasury stock (in shares)						33,101
Balance at Dec. 31, 2016	$ 20,174,190	$ 1,035,493	$ 24,076,991	$ 52,208,753	$ (56,806,766)	$ (340,281)
Balance (in shares) at Dec. 31, 2016		1,035,493				33,101