8. Discontinued Operations and Real Estate Interests Held for Sale (Detail) - (Table 2) Assets and Liabilities Associated with the Real Estate Interest Held for Sale (USD $)	Jun. 30, 2013	Dec. 31, 2012
Assets associated with real estate interest held for sale		$ 18,098,789
Grove Isle mortgage note payable
Obligations associated with real interest held for sale		2,696,000
Grove Isle accrued and other liabilities
Obligations associated with real interest held for sale		23,000
Bayshore mortgage note payable
Obligations associated with real interest held for sale		8,190,000
Bayshore interest rate swap contract payable
Obligations associated with real interest held for sale		1,965,000
Bayshore accrued and other liabilities
Obligations associated with real interest held for sale		510,000
Total
Obligations associated with real interest held for sale		13,384,000
Grove Isle Spa remaining interest
Assets associated with real estate interest held for sale		1,434,000
Grove Isle land, hotel, club building and marina
Assets associated with real estate interest held for sale		1,801,000
Grove Isle other assets
Assets associated with real estate interest held for sale		222,000
Bayshore Restaurant, marina and retail offices
Assets associated with real estate interest held for sale		7,822,000
Bayshore goodwill
Assets associated with real estate interest held for sale		5,629,000
Bayshore other receivables
Assets associated with real estate interest held for sale		206,000
Bayshore other assets
Assets associated with real estate interest held for sale		985,000
Total
Assets associated with real estate interest held for sale		$ 18,099,000