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Real Estate (Details) (USD $) In Millions, unless otherwise specified |  |  |  | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Oct. 10, 2012 Franklin Village Plaza [Member] | Dec. 31, 2012 Meadows Marketplace And Fieldstone Marketplace [Member] | Oct. 12, 2012 Meadows Marketplace And Fieldstone Marketplace [Member] | Dec. 31, 2012 Colonial Commons [Member] | Jan. 14, 2011 Colonial Commons [Member]
Real Estate Properties [Line Items] |  |  |  |  |
Percentage of ownership acquired | 100.00% |  | 80.00% |  |
Purchase price of acquired property | $ 75.1 | $ 27.3 |  |  | $ 49.1
Transaction costs |  |  |  |  | 0.6
Mortgage amount |  |  |  |  | $ 28.1
Mortgage interest rate |  |  |  |  | 5.60%
Mortgage maturity date |  |  |  | Feb. 01, 2021 |

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