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Summary of real estate owned (Details) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2015
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Summary of real estate owned details: |
Apartments | $ 455,856 fil_Apartments
Apartments under construction | 1,514 fil_ApartmentsUnderConstruction
Commercial properties | 196,398 fil_CommercialProperties
Land held for development | 157,591 fil_LandHeldForDevelopment
Real estate subject to sales contract | 21,434 fil_RealEstateSubjectToSalesContract
Total real estate, at cost, less impairment | 832,793 fil_TotalRealEstateAtCostLessImpairment
Less accumulated deprecation | (136,187)fil_LessAccumulatedDeprecation
Total real estate, net of depreciation | $ 696,606 fil_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 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