| **Other Income (Expense) (Details) (USD $)**                                                                       | 12 Months Ended                                                                                              |
|--------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------|
||
| **Other Income (Expense) [Line Items]**                                                                            |                                                                                                         |   |   |
| Interest and dividend income                                                                                       | $ 6,258,000us-gaap_InvestmentIncomeInterestAndDividend                                                       | $ 1,171,000us-gaap_InvestmentIncomeInterestAndDividend | $ 0us-gaap_InvestmentIncomeInterestAndDividend |
| Accretion income                                                                                                   | 1,455,000us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments                                      | 0us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments | 0us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments |
| Realized (losses) gains on the sale of investments                                                                 | (833,000)us-gaap_RealizedInvestmentGainsLosses                                                               | 93,000us-gaap_RealizedInvestmentGainsLosses | 0us-gaap_RealizedInvestmentGainsLosses |
| Other-than-temporary impairment losses                                                                             | (1,295,000)us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsNoPreviousImpairment | 0us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsNoPreviousImpairment | 0us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsNoPreviousImpairment |
| Total net investment income from available-for-sale securities                                                     | 5,585,000us-gaap_InterestAndDividendIncomeSecuritiesAvailableForSale                                         | 1,264,000us-gaap_InterestAndDividendIncomeSecuritiesAvailableForSale | 0us-gaap_InterestAndDividendIncomeSecuritiesAvailableForSale |
| Interest income from investments in special purpose entities                                                       | 6,116,000joe_InvestmentIncomefromInvestmentsinSpecialPurposeEntities                                         | 0joe_InvestmentIncomefromInvestmentsinSpecialPurposeEntities | 0joe_InvestmentIncomefromInvestmentsinSpecialPurposeEntities |
| Interest accrued on notes receivable                                                                               | 990,000us-gaap_InterestIncomeOther                                                                           | 234,000us-gaap_InterestIncomeOther | 707,000us-gaap_InterestIncomeOther |
| Total investment income, net                                                                                       | 12,691,000us-gaap_InvestmentIncomeNet                                                                        | 1,498,000us-gaap_InvestmentIncomeNet | 707,000us-gaap_InvestmentIncomeNet |
| Interest expense and amortization of discount and issuance costs for Senior Notes issued by special purpose entity | (6,584,000)joe_InterestExpenseinSpecialPurposeEntity                                                         | 0joe_InterestExpenseinSpecialPurposeEntity | 0joe_InterestExpenseinSpecialPurposeEntity |
| Interest expense                                                                                                   | (2,024,000)us-gaap_InterestExpenseDebt                                                                       | (2,040,000)us-gaap_InterestExpenseDebt | (2,820,000)us-gaap_InterestExpenseDebt |
| Total interest expense                                                                                             | (8,608,000)us-gaap_InterestExpense                                                                           | (2,040,000)us-gaap_InterestExpense | (2,820,000)us-gaap_InterestExpense |
| Accretion income from retained interest investments                                                                | 889,000joe_AccretionIncomeFromRetainedInterestInvestments                                                    | 793,000joe_AccretionIncomeFromRetainedInterestInvestments | (570,000)joe_AccretionIncomeFromRetainedInterestInvestments |
| Hunting lease income                                                                                               | 938,000joe_HuntingLeaseIncome                                                                                | 1,850,000joe_HuntingLeaseIncome | 2,193,000joe_HuntingLeaseIncome |
| Litigation and insurance proceeds received                                                                         | 1,814,000us-gaap_GainLossRelatedToLitigationSettlement                                                       | 560,000us-gaap_GainLossRelatedToLitigationSettlement | 1,671,000us-gaap_GainLossRelatedToLitigationSettlement |
| Southwest guarantee                                                                                                | 0us-gaap_GuaranteedBenefitLiabilityGrossPeriodIncreaseDecrease                                               | 0us-gaap_GuaranteedBenefitLiabilityGrossPeriodIncreaseDecrease | 832,000us-gaap_GuaranteedBenefitLiabilityGrossPeriodIncreaseDecrease |
| Other income, net                                                                                                  | 847,000joe_OtherIncomeNet                                                                                    | 1,007,000joe_OtherIncomeNet | 2,276,000joe_OtherIncomeNet |
| Other, net                                                                                                         | 4,488,000us-gaap_OtherIncome                                                                                 | 4,210,000us-gaap_OtherIncome | 6,402,000us-gaap_OtherIncome |
| Total other income                                                                                                 | 8,571,000us-gaap_NonoperatingIncomeExpense                                                                   | 3,668,000us-gaap_NonoperatingIncomeExpense | 4,289,000us-gaap_NonoperatingIncomeExpense |
| Debt Instrument, Interest Rate, Effective Percentage Rate Range, Minimum                                           | 4.90%us-gaap_DebtInstrumentInterestRateEffectivePercentageRateRangeMinimum                                   |   |   |
| Litigation Settlement, Amount                                                                                      | 1,800,000us-gaap_LitigationSettlementAmount                                                                  |   | 1,700,000us-gaap_LitigationSettlementAmount |
| Insurance Proceeds Received                                                                                        |                                                                                                         | 600,000joe_InsuranceProceedsReceived |   |
| Promissory Note Received for Sale of Equity Interest in Joint Venture                                              | 3,000,000joe_PromissoryNoteReceivedforSaleofEquityInterestinJointVenture                                     |   |   |
| Gain (Loss) on Disposition of Stock in Subsidiary or Equity Method Investee                                        | $ 600,000us-gaap_GainLossOnSaleOfStockInSubsidiaryOrEquityMethodInvestee                                     |   |   |
| Minimum                                                                                                            |                                                                                                         |   |   |
| **Other Income (Expense) [Line Items]**                                                                            |                                                                                                         |   |   |
| Retained interest, effective interest rate                                                                         | 3.70%joe_DiscountRateOnRetainedInterest/ us-gaap_RangeAxis= us-gaap_MinimumMember                            |   |   |
| Maximum                                                                                                            |                                                                                                         |   |   |
| **Other Income (Expense) [Line Items]**                                                                            |                                                                                                         |   |   |
| Retained interest, effective interest rate                                                                         | 11.80%joe_DiscountRateOnRetainedInterest/ us-gaap_RangeAxis= us-gaap_MaximumMember                           |   |   |

| X                                                                                                                                                                                                                                                                                       |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Accretion Income From Retained Interest Investments
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Discount rate on retained interest.
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| X                                                                                                                                                                                                                            |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Hunting Lease Income
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| X                                                                                                                                                                                                                                          |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Insurance Proceeds Received
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| X                                                                                                                                                                                                                                                                    |
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| - Definition
Interest Expense in Special Purpose Entity
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| X                                                                                                                                                                                                                                                                                                           |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Investment Income from Investments in Special Purpose Entities
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|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Other Income, Net
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| X                                                                                                                                                                                                                                                                                                                    |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Promissory Note Received for Sale of Equity Interest in Joint Venture
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No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The sum of the periodic adjustments of the differences between securities' face values and purchase prices that are charged against earnings. This is called accretion if the security was purchased at a discount and amortization if it was purchased at premium. As a noncash item, this element is an adjustment to net income when calculating cash provided by or used in operations using the indirect method.
+ References
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
When presenting a range of interest rates, the lowest effective rate for funds borrowed under the debt agreement as of the balance sheet date.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of gain (loss) on sale or disposal of equity in securities of subsidiaries or equity method investee.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process.
+ References
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Total net amount of increases and decreases to the liability for guaranteed minimum benefits on long-duration contracts occurring during the period, for all guaranteed benefit types.
+ References
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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of operating dividend and interest income, including amortization and accretion of premiums and discounts, on available-for-sale securities.
+ References
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|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of the cost of borrowed funds accounted for as interest expense.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of the cost of borrowed funds accounted for as interest expense for debt.
+ References
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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of interest income earned from interest bearing assets not separately disclosed.
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No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount before accretion (amortization) of purchase discount (premium) of interest income and dividend income on nonoperating securities.
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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount after accretion (amortization) of discount (premium), and investment expense, of interest income and dividend income on nonoperating securities.
+ References
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| X                                                                                                                                                                                                                                                                                                                  |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of judgment or settlement awarded to (against) the entity in respect of litigation.
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No definition available.
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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).
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| - Definition
Reflects the sum of all other revenue and income recognized by the entity in the period not otherwise specified in the income statement.
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| - Definition
This item represents an increase to the cumulative amount of credit losses recognized in earnings for an other than temporary impairment (OTTI) of a debt security held for which no such other than temporary impairment (OTTI) was previously recognized.
+ References
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The net realized gains or losses on investments during the period, not including gains or losses on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity.
+ References
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