Saddlebrook Rental Pool Operation - Schedule of Financial Information - Statements of Changes in Participants' Fund Balances (Detail) - Saddlebrook Rental Pool Operation [Member] - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Distribution Fund [Member]
Additions
Amounts available for distribution	$ 201,451	$ 299,482	$ 2,210,385	$ 2,579,027
Reductions
Amount withheld for maintenance escrow fund			(374,535)	(428,876)
Amount accrued or paid to participants			(1,835,850)	(2,150,151)
Maintenance Escrow Fund [Member]
Supplementary Financial Statements For Owners Participating In Condo Rental Pool Agreement [Line Items]
Balances, beginning of year			2,135,913	334,392
Additions:
Amount withheld from distribution fund			374,535	428,876
Unit owner payments			292,213	1,366,311
Interest earned			13,789	37
Reductions
Escrow account refunds			(306,483)	(10,731)
Maintenance charges			(172,493)	(190,006)
Unit renovations			(957,807)	(186,683)
Linen replacement			(96,789)	(111,334)
Reductions
Balances, end of year	$ 1,282,878	$ 1,630,862	$ 1,282,878	$ 1,630,862