Percentage points added to the reference rate to compute the variable rate on the debt instrument.

No definition available.

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ 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

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

+ Details

Name:	us-gaap_DebtInstrumentInterestRateEffectivePercentage
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Balance Type:	na
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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Data Type:	num:percentItemType
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Period Type:	instant

- 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.

+ Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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Debt - Descriptors (Details)	12 Months Ended
Debt - Descriptors (Details)	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2014
Debt Instrument [Line Items]
Debt interest rate			4.80%
Effective interest rate	4.90%
Construction loan \| Construction Loan, due March 2027, bearing interest at LIBOR plus 1.7% (effective rate of 3.3% at December 31, 2017)
Debt Instrument [Line Items]
Effective interest rate	3.30%
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 or other collateral, due May 2031 — May 2039, bearing interest at 3.6% to 7.0%
Debt Instrument [Line Items]
Debt interest rate	7.00%
Maximum \| Secured debt \| Community Development District debt, secured by certain real estate or other collateral, due May 2031 — May 2039, bearing interest at 3.4% to 7.0%
Debt Instrument [Line Items]
Debt interest rate		3.40%
Minimum \| Secured debt \| Community Development District debt, secured by certain real estate or other collateral, due May 2031 — May 2039, bearing interest at 3.6% to 7.0%
Debt Instrument [Line Items]
Debt interest rate	3.60%
Minimum \| Secured debt \| Community Development District debt, secured by certain real estate or other collateral, due May 2031 — May 2039, bearing interest at 3.4% to 7.0%
Debt Instrument [Line Items]
Debt interest rate		7.00%
LIBOR \| Construction loan \| Construction Loan, due March 2027, bearing interest at LIBOR plus 1.7% (effective rate of 3.3% at December 31, 2017)
Debt Instrument [Line Items]
Basis spread on variable rate	1.70%