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v2.4.0.6

Fair Value Measurements Cash Flow Model Critical Assumptions (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended |
--- | --- | ---
Mar. 31, 2013 | Dec. 31, 2012
Increase in investment in LLCs and other joint agreements | $ 10,543 |
Limited Partners' Contributed Capital | 22,275 |
Notes Receivable, Related Parties | 2,500 |
Capitalized Interest and Other Costs Included in Investment in Unconsolidated LLCs | $ 740 | $ 800
Minimum [Member] |  |
Equity Method Investment, Ownership Percentage | 50.00% |
Discount Rate Used in Determining Fair Value of Investments in Unconsolidated LLCs [Abstract] |  |
Discount Rate Used in Determining Fair Value of Investments in Unconsolidated LLCs | 13.00% |
Maximum [Member] |  |
Equity Method Investment, Ownership Percentage | 61.00% |
Discount Rate Used in Determining Fair Value of Investments in Unconsolidated LLCs [Abstract] |  |
Discount Rate Used in Determining Fair Value of Investments in Unconsolidated LLCs | 16.00% |
2013 [Member] |  |
Weighted Average Increase of Assumed Costs | 0.00% |
Weighted Average Sales Price Increase | 0.00% |
2014 and beyond [Member] |  |
Weighted Average Increase of Assumed Costs | 2.00% |
Weighted Average Sales Price Increase | 2.00% |

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