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Investment Property and Accumulated Depreciation (Details 1) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Property, Plant and Equipment [Line Items]  
Land $ 1,366us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
Buildings And Related Personal Property 30,579us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
Total 31,945us-gaap_RealEstateGrossAtCarryingValue
Accumulated Depreciation (in thousands) $ 24,090us-gaap_RealEstateOwnedAccumulatedDepreciation
Year of Construction Jan. 01, 1967
Date Acquired Mar. 01, 1984
Minimum [Member]  
Property, Plant and Equipment [Line Items]  
Depreciable Life 5 years
Maximum [Member]  
Property, Plant and Equipment [Line Items]  
Depreciable Life 30 years