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5. OTHER INVESTMENTS (Details 1) (USD $)
Mar. 31, 2015
Dec. 31, 2014
Less than 12 Months    
Fair Value $ 190,000fil_FairValue $ 477,000fil_FairValue
Unrealized Loss (10,000)fil_UnrealizedLoss (48,000)fil_UnrealizedLoss
Greater than 12 Months    
Fair Value 247,000fil_FairValue1 5,000fil_FairValue1
Unrealized Loss (20,000)fil_UnrealizedLoss1 (11,000)fil_UnrealizedLoss1
Total    
Fair Value 437,000fil_FairValue2 482,000fil_FairValue2
Unrealized Loss (30,000)fil_UnrealizedLoss2 (59,000)fil_UnrealizedLoss2
Partnerships owning investments in technology related industries    
Less than 12 Months    
Fair Value      
Unrealized Loss      
Greater than 12 Months    
Fair Value 5,000fil_FairValue1
/ us-gaap_EquitySecuritiesByIndustryAxis
= fil_PartnershipsOwningInvestmentsInTechnologyRelatedIndustriesMember
5,000fil_FairValue1
/ us-gaap_EquitySecuritiesByIndustryAxis
= fil_PartnershipsOwningInvestmentsInTechnologyRelatedIndustriesMember
Unrealized Loss (12,000)fil_UnrealizedLoss1
/ us-gaap_EquitySecuritiesByIndustryAxis
= fil_PartnershipsOwningInvestmentsInTechnologyRelatedIndustriesMember
(11,000)fil_UnrealizedLoss1
/ us-gaap_EquitySecuritiesByIndustryAxis
= fil_PartnershipsOwningInvestmentsInTechnologyRelatedIndustriesMember
Total    
Fair Value 5,000fil_FairValue2
/ us-gaap_EquitySecuritiesByIndustryAxis
= fil_PartnershipsOwningInvestmentsInTechnologyRelatedIndustriesMember
5,000fil_FairValue2
/ us-gaap_EquitySecuritiesByIndustryAxis
= fil_PartnershipsOwningInvestmentsInTechnologyRelatedIndustriesMember
Unrealized Loss (12,000)fil_UnrealizedLoss2
/ us-gaap_EquitySecuritiesByIndustryAxis
= fil_PartnershipsOwningInvestmentsInTechnologyRelatedIndustriesMember
(11,000)fil_UnrealizedLoss2
/ us-gaap_EquitySecuritiesByIndustryAxis
= fil_PartnershipsOwningInvestmentsInTechnologyRelatedIndustriesMember
Partnerships owning diversified businesses investments    
Less than 12 Months    
Fair Value 190,000fil_FairValue
/ us-gaap_EquitySecuritiesByIndustryAxis
= fil_PartnershipsOwningDiversifiedBusinessesInvestmentsMember
190,000fil_FairValue
/ us-gaap_EquitySecuritiesByIndustryAxis
= fil_PartnershipsOwningDiversifiedBusinessesInvestmentsMember
Unrealized Loss (10,000)fil_UnrealizedLoss
/ us-gaap_EquitySecuritiesByIndustryAxis
= fil_PartnershipsOwningDiversifiedBusinessesInvestmentsMember
(10,000)fil_UnrealizedLoss
/ us-gaap_EquitySecuritiesByIndustryAxis
= fil_PartnershipsOwningDiversifiedBusinessesInvestmentsMember
Greater than 12 Months    
Fair Value      
Unrealized Loss      
Total    
Fair Value 190,000fil_FairValue2
/ us-gaap_EquitySecuritiesByIndustryAxis
= fil_PartnershipsOwningDiversifiedBusinessesInvestmentsMember
190,000fil_FairValue2
/ us-gaap_EquitySecuritiesByIndustryAxis
= fil_PartnershipsOwningDiversifiedBusinessesInvestmentsMember
Unrealized Loss (10,000)fil_UnrealizedLoss2
/ us-gaap_EquitySecuritiesByIndustryAxis
= fil_PartnershipsOwningDiversifiedBusinessesInvestmentsMember
(10,000)fil_UnrealizedLoss2
/ us-gaap_EquitySecuritiesByIndustryAxis
= fil_PartnershipsOwningDiversifiedBusinessesInvestmentsMember
Other investments    
Less than 12 Months    
Fair Value    242,000fil_FairValue
/ us-gaap_EquitySecuritiesByIndustryAxis
= us-gaap_OtherInvestmentsMember
Unrealized Loss    (8,000)fil_UnrealizedLoss
/ us-gaap_EquitySecuritiesByIndustryAxis
= us-gaap_OtherInvestmentsMember
Greater than 12 Months    
Fair Value 242,000fil_FairValue1
/ us-gaap_EquitySecuritiesByIndustryAxis
= us-gaap_OtherInvestmentsMember
 
Unrealized Loss (8,000)fil_UnrealizedLoss1
/ us-gaap_EquitySecuritiesByIndustryAxis
= us-gaap_OtherInvestmentsMember
 
Total    
Fair Value 242,000fil_FairValue2
/ us-gaap_EquitySecuritiesByIndustryAxis
= us-gaap_OtherInvestmentsMember
242,000fil_FairValue2
/ us-gaap_EquitySecuritiesByIndustryAxis
= us-gaap_OtherInvestmentsMember
Unrealized Loss (8,000)fil_UnrealizedLoss2
/ us-gaap_EquitySecuritiesByIndustryAxis
= us-gaap_OtherInvestmentsMember
(8,000)fil_UnrealizedLoss2
/ us-gaap_EquitySecuritiesByIndustryAxis
= us-gaap_OtherInvestmentsMember
Partnerships owning real estate and related investments    
Less than 12 Months    
Fair Value   45,000fil_FairValue
/ us-gaap_EquitySecuritiesByIndustryAxis
= fil_PartnershipsOwningRealEstateAndRelatedInvestmentsMember
Unrealized Loss   (30,000)fil_UnrealizedLoss
/ us-gaap_EquitySecuritiesByIndustryAxis
= fil_PartnershipsOwningRealEstateAndRelatedInvestmentsMember
Greater than 12 Months    
Fair Value     
Unrealized Loss     
Total    
Fair Value   45,000fil_FairValue2
/ us-gaap_EquitySecuritiesByIndustryAxis
= fil_PartnershipsOwningRealEstateAndRelatedInvestmentsMember
Unrealized Loss   $ (30,000)fil_UnrealizedLoss2
/ us-gaap_EquitySecuritiesByIndustryAxis
= fil_PartnershipsOwningRealEstateAndRelatedInvestmentsMember