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Summary of real estate owned (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Summary of real estate owned details:
Apartments	$ 455,602fil_Apartments	$ 436,109fil_Apartments
Apartments under construction	1,512fil_ApartmentsUnderConstruction	0fil_ApartmentsUnderConstruction
Commercial properties	193,197fil_CommercialProperties	214,486fil_CommercialProperties
Land held for development	159,903fil_LandHeldForDevelopment	149,103fil_LandHeldForDevelopment
Real estate held for sale	0fil_RealEstateHeldForSale	18,817fil_RealEstateHeldForSale
Real estate subject to sales contract	21,326fil_RealEstateSubjectToSalesContract	29,547fil_RealEstateSubjectToSalesContract
Total real estate, at cost, less impairment	831,540fil_TotalRealEstateAtCostLessImpairment	848,062fil_TotalRealEstateAtCostLessImpairment
Less accumulated deprecation	(131,777)fil_LessAccumulatedDeprecation	(147,768)fil_LessAccumulatedDeprecation
Total real estate, net of depreciation	$ 699,763fil_TotalRealEstateNetOfDepreciation	$ 700,294fil_TotalRealEstateNetOfDepreciation

X

- Definition

Gross amount, as of the balance sheet date, of long-lived, depreciable assets that include apartment building structures held for productive use including any addition, improvement, or renovation to the structure, such as interior masonry, interior flooring, electrical, and plumbing

+ References

No definition available.

+ Details

Name:	fil_Apartments
Namespace Prefix:	fil_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount, as of the balance sheet date, of long-lived, depreciable assets that include apartment building structures held for productive use including any addition, improvement, or renovation to the structure, such as interior masonry, interior flooring, electrical, and plumbing

+ References

No definition available.

+ Details

Name:	fil_ApartmentsUnderConstruction
Namespace Prefix:	fil_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Gross amount, as of the balance sheet date, of long-lived, depreciable assets that include office and retail building structures held for productive use including any addition, improvement, or renovation to the structure, such as interior masonry, interior flooring, electrical, and plumbing.

+ References

No definition available.

+ Details

Name:	fil_CommercialProperties
Namespace Prefix:	fil_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Carrying amount of land available for development.

+ References

No definition available.

+ Details

Name:	fil_LandHeldForDevelopment
Namespace Prefix:	fil_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The amount as of the balance sheet date of accumulated depreciation pertaining to real estate properties.

+ References

No definition available.

+ Details

Name:	fil_LessAccumulatedDeprecation
Namespace Prefix:	fil_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Carrying amount as of the balance sheet date of investments in land and buildings held for sale, excluding real estate considered to be inventory of the entity.

+ References

No definition available.

+ Details

Name:	fil_RealEstateHeldForSale
Namespace Prefix:	fil_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The gross amount of real estate property subject to or available for contracts as of the balance sheet date

+ References

No definition available.

+ Details

Name:	fil_RealEstateSubjectToSalesContract
Namespace Prefix:	fil_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	fil_SummaryOfRealEstateOwnedDetailsAbstract
Namespace Prefix:	fil_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Gross amount of real estate as of the balance sheet date

+ References

No definition available.

+ Details

Name:	fil_TotalRealEstateAtCostLessImpairment
Namespace Prefix:	fil_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The total value of real estate, net of depreciation, as of the balance sheet date

+ References

No definition available.

+ Details

Name:	fil_TotalRealEstateNetOfDepreciation
Namespace Prefix:	fil_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant