| 
           Investments in Unconsolidated Entities (Details) (USD $) 
        In Thousands, unless otherwise specified  | 
        
           Mar. 31, 2014 
         | 
        
           Dec. 31, 2013 
         | 
      ||||||
|---|---|---|---|---|---|---|---|---|
| Guarantor Obligations [Line Items] | ||||||||
| Guarantor Obligations, Maximum Exposure, Undiscounted | $ 13,243 | $ 13,243 | ||||||
| 
           Repayment Guarantees [Member] 
         | 
        ||||||||
| Guarantor Obligations [Line Items] | ||||||||
| Guarantor Obligations, Maximum Exposure, Undiscounted | 0 | 0 | ||||||
| 
           Completion Guarantees [Member] 
         | 
        ||||||||
| Guarantor Obligations [Line Items] | ||||||||
| Guarantor Obligations, Maximum Exposure, Undiscounted | 0 | [1] | 0 | [1] | ||||
| 
           South Edge Guarantee [Member] 
         | 
        ||||||||
| Guarantor Obligations [Line Items] | ||||||||
| Guarantor Obligations, Maximum Exposure, Undiscounted | $ 13,243 | [2] | $ 13,243 | [2] | ||||
          
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