Saddlebrook Rental Pool Operation - Schedule of Financial Information - Statements of Changes in Participants' Fund Balances (Detail) - Saddlebrook Rental Pool Operation [Member] - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Distribution Fund [Member]
Supplementary Financial Statements For Owners Participating In Condo Rental Pool Agreement [Line Items]
Balances, beginning of year	$ 0	$ 0
Additions
Amounts available for distribution	1,116,515	2,554,776
Reductions
Amounts withheld for maintenance escrow fund	(138,590)	(419,887)
Amounts accrued or paid to participants	(977,925)	(2,134,889)
Balances, end of year	0	0
Maintenance Escrow Fund [Member]
Supplementary Financial Statements For Owners Participating In Condo Rental Pool Agreement [Line Items]
Balances, beginning of year	1,081,140	2,135,913
Additions
Amount withheld from distribution fund	138,590	419,887
Unit owner payments	192,687	419,556
Interest earned	2,838	17,761
Reductions
Unit renovations	(72,284)	(1,166,199)
Refunds of excess amounts in escrow accounts	(104,530)	(337,853)
Maintenance charges	(158,262)	(284,334)
Linen expense	(83,373)	(123,591)
Reductions
Balances, end of year	$ 996,806	$ 1,081,140