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Fair Value Measurements Cash Flow Model Critical Assumptions (Details) (USD $) | 9 Months Ended |
--- | --- | ---
Sep. 30, 2014 | Dec. 31, 2013
Increase in Investments in Unconsolidated JVs and other joint agreements | $ 5,500,000 |
Limited Partners' Contributed Capital | 40,800,000 |
Notes Receivable, Related Parties | 2,500,000 |
Capitalized Interest and Other Costs Included in Investment in Unconsolidated JVs and other joint agreements | $ 750,000 | $ 806,000
Minimum [Member] |  |
Equity Method Investment, Ownership Percentage | 25.00% |
Discount Rate Used in Determining Fair Value of Investments in Unconsolidated JVs and other joint agreements | 13.00% |
Maximum [Member] |  |
Equity Method Investment, Ownership Percentage | 61.00% |
Discount Rate Used in Determining Fair Value of Investments in Unconsolidated JVs and other joint agreements | 16.00% |
Current Year [Member] |  |
Weighted Average Sales Price Increase | 0.00% |
Weighted Average Increase of Assumed Costs | 0.00% |
Current Year plus 1 and 2 [Member] | Minimum [Member] |  |
Weighted Average Sales Price Increase | 2.00% |
Weighted Average Increase of Assumed Costs | 2.00% |
Current Year plus 1 and 2 [Member] | Maximum [Member] |  |
Weighted Average Sales Price Increase | 4.00% |
Weighted Average Increase of Assumed Costs | 4.00% |
Current Year plus 3 And Beyond [Member] |  |
Weighted Average Sales Price Increase | 2.00% |
Weighted Average Increase of Assumed Costs | 2.00% |

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