Annual report pursuant to Section 13 and 15(d)

Schedule III - Reconciliation of Real Estate Property (Details)

v2.4.1.9
Schedule III - Reconciliation of Real Estate Property (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]      
Balance, beginning of year $ 2,249,819us-gaap_RealEstateGrossAtCarryingValue $ 1,947,352us-gaap_RealEstateGrossAtCarryingValue $ 1,916,045us-gaap_RealEstateGrossAtCarryingValue
Acquisitions 0us-gaap_RealEstateOtherAcquisitions 255,107us-gaap_RealEstateOtherAcquisitions 0us-gaap_RealEstateOtherAcquisitions
Improvements 160,560us-gaap_RealEstateImprovements 50,283us-gaap_RealEstateImprovements 34,633us-gaap_RealEstateImprovements
Dispositions and reclasses to rental property held for sale (146,776)us-gaap_RealEstateCostOfRealEstateSold (2,923)us-gaap_RealEstateCostOfRealEstateSold (3,326)us-gaap_RealEstateCostOfRealEstateSold
Balance, end of year $ 2,263,603us-gaap_RealEstateGrossAtCarryingValue $ 2,249,819us-gaap_RealEstateGrossAtCarryingValue $ 1,947,352us-gaap_RealEstateGrossAtCarryingValue