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Summary of Significant Accounting Policies Text (Details) | 12 Months Ended
--- | ---
Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($)
Number of Real Estate Properties | 394 |  |
Value of furniture and fixtures minimum range | $ 10,000 |  |
Value of furniture and fixtures maximum range | $ 25,000 |  |
Lease Intangibles, Average Term | 6 |  |
Capitalized Costs Development and Renovation | $ 22,300,000 | $ 22,400,000 | $ 16,500,000
Accumulated Amortization, Deferred Finance Costs | $ 45,400,000 | 37,700,000 |
Partially Owned Consolidated Properties | 19 |  |
Partially Owned Consolidated Units | 3,771 |  |
Partially Owned Properties | $ 4,608,000 | $ 124,909,000 |
Furniture and Fixtures [Member] |  |  |
Property, Plant and Equipment, Estimated Useful Lives | 5 |  |
Furniture and Fixtures Maximum [Member] |  |  |
Property, Plant and Equipment, Estimated Useful Lives | 10 |  |
Building [Member] |  |  |
Property, Plant and Equipment, Estimated Useful Lives | 30 |  |
Building Improvements [Member] |  |  |
Property, Plant and Equipment, Estimated Useful Lives | 8 |  |
Replacements Minimum [Member] |  |  |
Property, Plant and Equipment, Estimated Useful Lives | 5 |  |
Replacements Maximum [Member] |  |  |
Property, Plant and Equipment, Estimated Useful Lives | 10 |  |
Renovations and Improvements Minimum [Member] |  |  |
Property, Plant and Equipment, Estimated Useful Lives | 5 |  |
Renovations and Improvements Maximum [Member] |  |  |
Property, Plant and Equipment, Estimated Useful Lives | 15 |  |
Limited Life Partnership Properties [Member] |  |  |
Partially Owned Properties | $ 11,500,000 |  |
Partially Owned Limited Life Partnership Properties | 6 |  |
Noncontrolling Interests Settlement Value | $ 75,100,000 |  |
Unconsolidated Properties [Member] |  |  |
Number of Real Estate Properties | 3 |  |
Partially Owned Properties | $ 90,878,000 |  |
Minimum [Member] |  |  |
Retail/Commercial Leases Term | 5 |  |
Maximum [Member] |  |  |
Retail/Commercial Leases Term | 10 |  |

X
- Definition Represents payroll and associated costs of employees directly responsible for and who spend their time on the supervision of development activities as well as major capital and/or renovation projects that are capitalized on the balance sheet + References No definition available. + Details
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- Definition Carrying amount of equity interests owned by noncontrolling partners in partially owned properties. + References No definition available. + Details
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- Definition Represents the value of Noncontrolling Interest distributions had the Company's partnership agreements been liquidated through the sale of their assets upon reaching the date specified in each respective partnership agreement. The Company, as controlling partner, has an obligation to cause the property owning partnerships to distribute the proceeds of liquidation to the Noncontrolling Interests in these Partially Owned Properties. + References No definition available. + Details
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- Definition Total number of units associated with rental properties that are partially owned and consolidated by the Company. + References No definition available. + Details
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- Definition Total number of properties that contain provisions in their respective partnership agreements that require liquidation through the sale of assets upon reaching the date specified within their agreements. + References No definition available. + Details
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