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
	Mar. 31, 2020	Mar. 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
Amount available for distribution	772,757	1,429,593
Reductions
Amount withheld for maintenance escrow fund	(118,873)	(245,917)
Amount accrued or paid to participants	(653,884)	(1,183,676)
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	118,873	245,917
Unit owner payments	120,777	88,966
Interest earned	2,617	123
Reductions
Escrow account refunds	(94,419)	(75,612)
Maintenance charges	(80,974)	(47,969)
Unit renovations	(8,393)	(212,975)
Linen replacement	(30,002)	(233,614)
Reductions
Balances, end of year	$ 1,109,619	$ 1,900,749