| **Real Estate Joint Ventures - Additional Information (Details) (USD $)**                                                                                                                                           | 1 Months Ended | 3 Months Ended | 12 Months Ended |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------|----------------|-----------------|
||
| **Variable Interest Entity [Line Items]**                                                                                                                                                                           |           |           |                 |   |  |
| Debt                                                                                                                                                                                                                |           | $ 49,415,000   | [1]             | $ 44,217,000 |  |
| Investment in unconsolidated affiliates                                                                                                                                                                             |           | 2,378,000      | [2]             | 2,241,000 | [2] |
| Consolidated Variable Interest Entities                                                                                                                                                                             |           |           |                 |   |  |
| **Variable Interest Entity [Line Items]**                                                                                                                                                                           |           |           |                 |   |  |
| Construction loan date                                                                                                                                                                                              | 2016-02        |           |                 |   |  |
| Variable Interest Entities                                                                                                                                                                                          |           |           |                 |   |  |
| **Variable Interest Entity [Line Items]**                                                                                                                                                                           |           |           |                 |   |  |
| Debt                                                                                                                                                                                                                |           | 16,768,000     |                 | 6,445,000 |  |
| Principal repayment guarantee                                                                                                                                                                                       |           | 33.00%         |                 |   |  |
| Assets                                                                                                                                                                                                              |           | 39,470,000     |                 |   |  |
| Liabilities                                                                                                                                                                                                         |           | 22,200,000     |                 |   |  |
| Debt                                                                                                                                                                                                                |           | 16,800,000     |                 |   |  |
| Unconsolidated Variable Interest Entities                                                                                                                                                                           |           |           |                 |   |  |
| **Variable Interest Entity [Line Items]**                                                                                                                                                                           |           |           |                 |   |  |
| Number of variable interest Entity, not primary beneficiary                                                                                                                                                         |           | 2              |                 |   |  |
| Pier Park North | Consolidated Variable Interest Entities                                                                                                                                                           |           |           |                 |   |  |
| **Variable Interest Entity [Line Items]**                                                                                                                                                                           |           |           |                 |   |  |
| Estimated contribution for joint venture by company and its partner                                                                                                                                                 |           | 14,400,000     |                 |   |  |
| Contribution for joint venture                                                                                                                                                                                      |           | 9,500,000      |                 |   |  |
| Noncontrolling interest contribution for joint venture                                                                                                                                                              |           | 4,900,000      |                 |   |  |
| Percentage of cash contribution for joint venture by parent                                                                                                                                                         |           | 66.00%         |                 |   |  |
| Percentage of additional cash contribution for joint venture                                                                                                                                                        |           | 34.00%         |                 |   |  |
| Land contributed to joint venture agreed upon value                                                                                                                                                                 |           | 6,000,000      |                 |   |  |
| Proceeds from sale of property                                                                                                                                                                                      |           |           |                 | 2,300,000 |  |
| Construction loan                                                                                                                                                                                                   | 41,000,000     |           |                 |   |  |
| Construction loan, term of optional renewal extension                                                                                                                                                               | 2 years        |           |                 |   |  |
| Principal repayment guarantee                                                                                                                                                                                       | 33.00%         | 33.00%         |                 |   |  |
| Debt instrument, covenant compliance, minimum liquidity amount                                                                                                                                                      | 25,000,000     |           |                 |   |  |
| Net worth                                                                                                                                                                                                           | 350,000,000    |           |                 |   |  |
| Percentage of total equity paid by parent                                                                                                                                                                           |           | 73.00%         |                 |   |  |
| Initial profits to be redistributed to repay contribution                                                                                                                                                           |           | 6,000,000      |                 |   |  |
| Pier Park North | Consolidated Variable Interest Entities | Construction Loans | Pier Park North Joint Venture Construction Loan                                                                                    |           |           |                 |   |  |
| **Variable Interest Entity [Line Items]**                                                                                                                                                                           |           |           |                 |   |  |
| Debt                                                                                                                                                                                                                |           | $ 16,800,000   |                 | $ 6,400,000 |  |
| Artisan Park, L.L.C | Consolidated Variable Interest Entities                                                                                                                                                       |           |           |                 |   |  |
| **Variable Interest Entity [Line Items]**                                                                                                                                                                           |           |           |                 |   |  |
| Percentage of cash contribution for joint venture by parent                                                                                                                                                         |           | 74.00%         |                 |   |  |
|                                                                                                                                                                                                                     |
| [1]Includes debt defeased in connection with the sale of the Company’s office portfolio in the amount of $26.1 million.[2]Recorded in the Company’s resorts, leisure and leasing operation's segment. |

| X                                                                                                                                                                                                                                                                    |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Capital Contribution Made To Joint Venture
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No definition available.
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| X                                                                                                                                                                                                                                                                                     |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Construction Loan, Term of Optional Renewal Extension
+ References
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| X                                                                                                                                                                                                                                                                                                        |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Debt Instrument, Covenant Compliance, Minimum Liquidity Amount
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No definition available.
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| X                                                                                                                                                                                                                                                             |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Debt Instrument Maturity Month And Year
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                       |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Estimated Cash Contributions for Joint Venture By Company And Partner
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Initial Profits to be Redistributed to Repay Contribution
+ References
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| X                                                                                                                                                                                                                                                                                    |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Land Contributed to Joint Venture, Agreed Upon Value
+ References
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| X                                                                                                                                                                                                                                                                                                                 |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Noncontrolling Interest Capital Contribution Made To Joint Venture
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| X                                                                                                                                                                                                                                                          |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Percentage of Total Equity Paid by Parent
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No definition available.
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| X                                                                                                                                                                                                                                                                        |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Repayment Guarantee For Principal Amount Of Loan
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No definition available.
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| X                                                                                                                                                                                                                                                                                                      |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Variable Interest Entity, Consolidated, Carrying Amount, Debt
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| X                                                                                                                                                                                                                                                                                                   |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Variable Interest Entity, Nonconsolidated, Number of Entities
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
This element represents the carrying value of a short-term real estate loan to finance building costs. The funds are disbursed as needed or in accordance with a prearranged plan; generally, a portion of the funds is disbursed at inception and the remainder as construction progresses. The money is repaid on completion of the project, usually from the proceeds of a mortgage loan. The rate is normally higher than the prime rate, and there is usually an origination fee. The effective yield on these loans tends to be high, and the lender has a security interest in the real property. Note that there are separate concepts for the current and noncurrent portions of long-term construction loans.
+ References
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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The lowest amount of net worth (total assets minus total liabilities) required by secondary market investors or state-imposed regulatory mandates.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                           |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                         |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The parent entity's interest in net assets of the subsidiary, expressed as a percentage.
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The carrying amount of investments in unconsolidated real estate and other joint ventures not separately presented. This includes direct and indirect investments.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The carrying amount of the consolidated Variable Interest Entity's assets included in the reporting entity's statement of financial position.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The carrying amount of the consolidated Variable Interest Entity's liabilities included in the reporting entity's statement of financial position.
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