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Real Estate - Portfolio (Remaining Funding Commitments) (Details) (USD $) In Thousands, unless otherwise specified | 9 Months Ended
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Sep. 30, 2012 properties
Real Estate Investments, Net [Abstract] |  |
Number of Properties with Funding Commitments | 54 |
Total Commitment | $ 184,286 | [1]
Amount Funded | 146,715 |
Remaining Commitment | $ 37,571 |
[1] | Includes land and construction costs.

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- Details
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