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Casualty Event (Details) (USD $)
 12 Months Ended
Dec. 31, 2014
Units
Extraordinary and Unusual Items [Abstract]  
Number of apartment units affected by casualty loss 3aiv_Numberofapartmentunitsaffectedbycasualtyloss
Estimated damages of fire casualty event $ 160,000aiv_FireEstimatedDamages
Clean-up costs related to casualty event 133,000aiv_Cleanupcostsrelatedtocasualtyevent
Repair and clean-up costs related to casualty event $ 74,000aiv_Repairandcleanupcostsrelatedtocasualtyevent