| **Debt  - Descriptors (Details)**                                                                                                                                                                  | Dec. 31, 2016 | Dec. 31, 2015 | Apr. 30, 2014 |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------|---------------|---------------|
| **Debt Instrument [Line Items]**                                                                                                                                                                   |          |          |          |
| Debt interest rate                                                                                                                                                                                 |          |          | 4.75%         |
| Consolidated Variable Interest Entities | Refinanced Loan in the Pier Park North JV, due November 2025, bearing interest at 4.1%                                                                   |          |          |          |
| **Debt Instrument [Line Items]**                                                                                                                                                                   |          |          |          |
| Debt interest rate                                                                                                                                                                                 | 4.10%         |          |          |
| Consolidated Variable Interest Entities | Construction loan | Refinanced Loan in the Pier Park North JV, due November 2025, bearing interest at 4.1%                                               |          |          |          |
| **Debt Instrument [Line Items]**                                                                                                                                                                   |          |          |          |
| Debt interest rate                                                                                                                                                                                 | 4.10%         | 4.10%         |          |
| Maximum | Secured debt | Community Development District debt, secured by certain real estate and standby note purchase agreements, due May 2016 — May 2039, bearing interest at 2.8% to 7.0% |          |          |          |
| **Debt Instrument [Line Items]**                                                                                                                                                                   |          |          |          |
| Debt interest rate                                                                                                                                                                                 | 7.00%         | 2.80%         |          |
| Minimum | Secured debt | Community Development District debt, secured by certain real estate and standby note purchase agreements, due May 2016 — May 2039, bearing interest at 2.8% to 7.0% |          |          |          |
| **Debt Instrument [Line Items]**                                                                                                                                                                   |          |          |          |
| Debt interest rate                                                                                                                                                                                 | 3.40%         | 7.00%         |          |

| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Contractual interest rate for funds borrowed, under the debt agreement.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682
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| X                                                                                                                                                                                                                                                                                                                                                                                                               |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.
+ References
No definition available.
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| X                                                                                                                                                                                               |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| X                                                                                                                                                    |
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| X                                                                                                                                                             |
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| X                                                                                                                               |
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