Notes Receivable (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Pier Park Community Development District notes, non-interest bearing, due December 2024, net of unamortized discount of $0.1 million, effective rates 5.73% - 8.0%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unamortized discount	$ 0.1	$ 0.1
Notes receivable, maturity date	2024-12	2024-12
Pier Park Community Development District notes, non-interest bearing, due December 2024, net of unamortized discount of $0.1 million, effective rates 5.73% - 8.0% | Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable, effective interest rate	5.73%	5.73%
Pier Park Community Development District notes, non-interest bearing, due December 2024, net of unamortized discount of $0.1 million, effective rates 5.73% - 8.0% | Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable, effective interest rate	8.00%	8.00%
Various builder notes, - 5.0% at December 31, 2012 and 2011, due October 2012 thru January 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable, effective interest rate	8.00%	5.00%
Various builder notes, - 5.0% at December 31, 2012 and 2011, due October 2012 thru January 2013 | Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable, maturity date	2012-10	2012-10
Various builder notes, - 5.0% at December 31, 2012 and 2011, due October 2012 thru January 2013 | Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable, maturity date	2013-01	2013-01