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Commitments And Contingencies (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012
Anticipated expenditures relating to completion of construction type contracts | $ 412.2 |  | $ 412.2 |
Earnest Money Deposits | 2.3 |  | 2.3 |
Rental expense | 0.7 | 0.7 | 2.1 | 1.9
Minimum annual rental commitments, remainder of 2013 | 0.7 |  | 0.7 |
Minimum annual rental commitments, 2014 | 3.1 |  | 3.1 |
Minimum annual rental commitments, 2015 | 1.9 |  | 1.9 |
Minimum annual rental commitments, 2016 | 2.2 |  | 2.2 |
Minimum annual rental commitments, 2017 | 2.2 |  | 2.2 |
Minimum annual rental commitments, thereafter | 16.4 |  | 16.4 |
Maximum [Member] | Partnership Interest [Member] |  |  |  |
Less than joint venture economic interest noted | 100.00% |  | 100.00% |
Non-Refundable [Member] |  |  |  |
Earnest Money Deposits | $ 1.3 |  | $ 1.3 |

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