Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
OPERATING REVENUES
Leasing	$ 2,184,000	$ 1,448,000	$ 5,947,000	$ 4,620,000
Total operating revenues	2,437,000	1,697,000	9,446,000	5,441,000
OPERATING COSTS AND EXPENSES
Leasing	784,000	671,000	2,495,000	2,278,000
General and administrative	612,000	514,000	1,904,000	1,823,000
Share-based compensation	365,000	402,000	1,084,000	1,229,000
Depreciation	300,000	326,000	902,000	971,000
Total operating costs and expenses	2,432,000	2,151,000	7,997,000	7,651,000
OPERATING INCOME (LOSS)	5,000	(454,000)	1,449,000	(2,210,000)
Pension and other post-retirement expenses	(116,000)	(125,000)	(348,000)	(359,000)
Interest expense	(28,000)	(29,000)	(94,000)	(105,000)
INCOME (LOSS) FROM CONTINUING OPERATIONS	(139,000)	(608,000)	1,020,000	(1,780,000)
Loss from discontinued operations, net	0	(25,000)	(214,000)	(84,000)
NET INCOME (LOSS)	(139,000)	(633,000)	806,000	(1,864,000)
Other compreshensive income - pension, net	221,000	206,000	663,000	617,000
TOTAL COMPREHENSIVE INCOME (LOSS)	$ 82,000	$ (427,000)	1,469,000	(1,247,000)
Other income			$ 13,000	$ 894,000
LOSS PER COMMON SHARE-BASIC AND DILUTED
Loss from Continuing Operations (in dollars per share)	$ (0.01)	$ (0.03)	$ 0.05	$ (0.09)
Loss from Discontinued Operations (in dollars per share)	0	0	(0.01)	(0.01)
Net Loss (in dollars per share)	$ (0.01)	$ (0.03)	$ 0.04	$ (0.10)
Real Estate [Member]
OPERATING REVENUES
Operating revenues	$ 0	$ 15,000	$ 2,700,000	$ 173,000
OPERATING COSTS AND EXPENSES
Operating Costs and Expenses	67,000	86,000	618,000	457,000
Resort Amenities and Other [Member]
OPERATING REVENUES
Operating revenues	253,000	234,000	799,000	648,000
OPERATING COSTS AND EXPENSES
Operating Costs and Expenses	$ 304,000	$ 152,000	$ 994,000	$ 893,000