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Note 6 - Other Real Estate Operations (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Real Estate [Abstract] |  |  |
Other Revenue (Expense) from Real Estate Operations | $ (12,000)us-gaap_OtherRevenueExpenseFromRealEstateOperations | $ (212,000)us-gaap_OtherRevenueExpenseFromRealEstateOperations | $ 58,000 us-gaap_OtherRevenueExpenseFromRealEstateOperations

X
- Definition Amount of other revenue (expense) derived from real estate investments partnerships. + References No definition available. + Details
Name: | us-gaap_OtherRevenueExpenseFromRealEstateOperations
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_RealEstateAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration