| **Real Estate Sales - RiverTown Sale (Details)**                                                                                                                                                        |                | 3 Months Ended | 12 Months Ended |              |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------|----------------|-----------------|--------------|
||
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]**                                                                       |           |           |            |         |   |   |
| Impact fees received                                                                                                                                                                                    |           |           | $ 400,000       | $ 100,000    | $ 100,000 |   |
| Long term debt                                                                                                                                                                                          |           |           | 55,040,000      | 54,474,000   |   |   |
| Total Community Development District debt                                                                                                                                                               |           |           | $ 22,600,000    | $ 22,500,000 |   |   |
| RiverTown Sale                                                                                                                                                                                          |           |           |            |         |   |   |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]**                                                                       |           |           |            |         |   |   |
| Proposed land sale, area of land (in acres) | a                                                                                                                                                         | 4,057          |           |            |         |   |   |
| Cash proceeds from sale of real estate                                                                                                                                                                  | $ 24,000,000.0 |           |            |         |   |   |
| Notes received in sale of real estate                                                                                                                                                                   | 19,600,000.0   |           |            |         |   |   |
| Proposed land sale, expected impact fee credit, period for recognition                                                                                                                                  |           |           | 3 years         |         |   |   |
| Net earnings before income taxes for real estate sale                                                                                                                                                   |           | $ 26,000,000   |            |         |   |   |
| Minimum | RiverTown Sale                                                                                                                                                                                |           |           |            |         |   |   |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]**                                                                       |           |           |            |         |   |   |
| Proposed land sale, expected impact fee credit                                                                                                                                                          | 20,000,000     |           |            |         |   |   |
| Maximum | RiverTown Sale                                                                                                                                                                                |           |           |            |         |   |   |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]**                                                                       |           |           |            |         |   |   |
| Proposed land sale, expected impact fee credit                                                                                                                                                          | 26,000,000     |           |            |         |   |   |
| 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% | Rivers Edge CDD Assessments |           |           |            |         |   |   |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]**                                                                       |           |           |            |         |   |   |
| Long term debt                                                                                                                                                                                          | $ 11,000,000   |           |            |         |   |   |
| Total Community Development District debt                                                                                                                                                               |           |           |            |         |   | $ 5,400,000 |

| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Including the current and noncurrent portions, carrying value as of the balance sheet date of a type of municipal bond typically used to fund a development project. Also called special assessment limited liability bond, special district bond, special purpose bond, special tax bond and community development obligation. Interest owed to lenders is paid by taxes levied on the community benefiting from the particular bond-funded project. For example, if a bond of this sort was issued to pay for sidewalks to be repaved in a certain community, an additional tax would be levied on homeowners in the area benefiting from this project.
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| - Definition
Disposal Group, Including Discontinued Operation, Consideration, Notes Receivable
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Disposal Group, Including Discontinued Operation, Expected Impact Fee Receivable
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No definition available.
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| - Definition
Disposal Group, Including Discontinued Operation, Expected Impact Fee Receivable, Period For Recognition
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No definition available.
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| - Definition
Impact Fees Received
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| X                                                                                                                                                                                                               |
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| - Definition
Area of land held.
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| - Definition
Amount before tax of gain (loss) recognized on the sale or disposal of a disposal group. Excludes discontinued operations.
+ References
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| - 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.
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No definition available.
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.
+ References
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Cash received for the sale of real estate that is not part of an investing activity during the current period.
+ References
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