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Investment Property and Accumulated Depreciation (Details 2) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Investment Property and Accumulated Depreciation [Abstract]    
Balance at beginning of year $ 31,945us-gaap_PropertyPlantAndEquipmentGross $ 31,442us-gaap_PropertyPlantAndEquipmentGross
Property improvements and replacements 861aiv_PropertyImprovementsAdditionsForTheYear 672aiv_PropertyImprovementsAdditionsForTheYear
Retirement of assets (358)us-gaap_PropertyPlantAndEquipmentTransfersAndChanges (323)us-gaap_PropertyPlantAndEquipmentTransfersAndChanges
Balance at end of year 31,442us-gaap_PropertyPlantAndEquipmentGross 31,093us-gaap_PropertyPlantAndEquipmentGross
Balance at beginning of year 24,090us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment 23,203us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Depreciation 1,245us-gaap_Depreciation 1,574us-gaap_Depreciation
Retirement of assets (358)us-gaap_AccumulatedDepreciationDepletionAndAmortizationSaleOfPropertyPlantAndEquipment (323)us-gaap_AccumulatedDepreciationDepletionAndAmortizationSaleOfPropertyPlantAndEquipment
Balance at end of year $ 23,203us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment $ 21,952us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment