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Commitments and Contingencies (Details) - Dec. 31, 2015 $ in Thousands | Communities | Total | USD ($)
--- | --- | --- | ---
Long-term Purchase Commitment [Line Items] |  |  |  |
Number of Properties |  | 133 | 2 |
Costs Incurred to Date |  |  |  | $ 859,798
Expected Costs to Complete | [1] |  |  | 319,316
Wholly-owned — under development |  |  |  |
Long-term Purchase Commitment [Line Items] |  |  |  |
Number of Properties |  |  | 1 |
Costs Incurred to Date |  |  |  | 124,072
Purchase Commitment, Remaining Minimum Amount Committed |  |  |  | 217,928
Average Ownership Stake |  |  | 100.00% |
Wholly-owned — redevelopment |  |  |  |
Long-term Purchase Commitment [Line Items] |  |  |  |
Number of Properties |  |  | 3 |
Costs Incurred to Date |  |  |  | 11,302
Purchase Commitment, Remaining Minimum Amount Committed |  |  |  | 16,698
Average Ownership Stake |  |  | 100.00% |
Unconsolidated joint ventures |  |  |  |
Long-term Purchase Commitment [Line Items] |  |  |  |
Number of Properties |  |  | 4 |
Costs Incurred to Date |  |  |  | 497,350
Purchase Commitment, Remaining Minimum Amount Committed |  |  |  | 81,979
Participating Loan Investment Steele Creek Denver Colorado [Member] |  |  |  |
Long-term Purchase Commitment [Line Items] |  |  |  |
Number of Properties |  |  | 1 |
Costs Incurred to Date |  |  |  | 90,747
Purchase Commitment, Remaining Minimum Amount Committed |  |  |  | 2,711
Average Ownership Stake |  |  | 0.00% |
Preferred Equity Investment West Coast Development JV [Member] |  |  |  |
Long-term Purchase Commitment [Line Items] |  |  |  |
Number of Properties |  |  | 5 |
Costs Incurred to Date |  |  |  | 136,327
Purchase Commitment, Remaining Minimum Amount Committed |  |  |  | $ 0
Average Ownership Stake |  |  | 48.00% |
[1] | Represents 100% of project costs incurred to date.

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