J. OPERATING SEGMENTS (Details) - USD ($) $ in Thousands	3 Months Ended												12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenue	$ 159	$ 194	$ 243	$ 195					$ 157	$ 232	$ 259	$ 172	$ 791	$ 764	$ 820
Operating (expense)													1,115	1,039	1,788
Depreciation, depletion and amortization													320	494	617
Lease of Retirement Center													0	0	0
Impairment of natural gas and oil properties	2,626	0	0	0					2,717	0	0	0	2,626	0	2,717
Total operating expenses	261	254	256	256	$ 327	$ 295	$ 233	$ 396	363	527	440	470	4,061	1,533	5,122
Interest income													25	23	12
Interest expense													(24)	(38)	(62)
Gain on prepayment of debt					888	0	0	0					0	888	0
Gain on sale of land					50	0	0	0					0	50	0
Recovery of bad debt									0	306	386	738	0	0	1,430
Other income (expense) net													28	(110)	(32)
Segment operating income (loss)	(2,849)	$ (90)	$ (124)	$ (172)	738	$ (170)	$ (171)	$ (353)	(3,053)	$ (179)	$ 26	$ 252	(3,241)	44	(2,954)
Assets	4,205				7,178				8,445				4,205	7,178	8,445
Oil and Gas Operations [Member]
Revenue														764	820
Operating (expense)													707	687	1,183
Depreciation, depletion and amortization													320	494	617
Lease of Retirement Center													0	0	0
Impairment of natural gas and oil properties													2,626	0	2,717
Total operating expenses													3,653	1,181	4,517
Interest income													25	23	0
Interest expense													(24)	(38)	(62)
Gain on prepayment of debt														888
Gain on sale of land														0
Other income (expense) net													0	0	0
Segment operating income (loss)													(2,861)	421	(3,759)
Assets	3,903				6,641				7,420				3,903	6,641	7,420
Corporate [Member]
Revenue														0	0
Operating (expense)													408	352	605
Depreciation, depletion and amortization													0	0	0
Lease of Retirement Center													0	0	0
Impairment of natural gas and oil properties													0	0	0
Total operating expenses													408	352	605
Interest income													0	0	12
Interest expense													0	0	0
Gain on prepayment of debt														0
Gain on sale of land														50
Other income (expense) net													28	(110)	(32)
Segment operating income (loss)													(380)	(572)	805
Assets	303				291				1,025				303	291	1,025
Discontinued Operations [Member]
Revenue													659
Operating (expense)													358
Depreciation, depletion and amortization													101
Lease of Retirement Center													205
Impairment of natural gas and oil properties													0
Total operating expenses													664
Interest income													0
Interest expense													0
Other income (expense) net													0
Segment operating income (loss)													(5)
Assets	$ 0												$ 0
Retirement Facility [Member]
Revenue														2,665	2,997
Operating (expense)														1,496	1,623
Depreciation, depletion and amortization														168	62
Lease of Retirement Center														997	980
Impairment of natural gas and oil properties														0	0
Total operating expenses														2,661	2,665
Interest income														0	0
Interest expense														0
Gain on prepayment of debt														0
Gain on sale of land														0
Other income (expense) net														0	0
Segment operating income (loss)														4	332
Assets					$ 246				$ 430					$ 246	$ 430