Saddlebrook Rental Pool Operation - Schedule of Financial Information - Statements of Changes in Participants' Fund Balances (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Supplementary Financial Statements For Owners Participating In Condo Rental Pool Agreement [Line Items]
Balances, beginning of year
Reductions
Balances, end of year
Saddlebrook Rental Pool Operation [Member] | Distribution Fund [Member]
Additions
Amounts available for distribution	3,082,094	3,221,949
Reductions
Amounts withheld for maintenance escrow fund	(507,749)	(527,275)
Amounts accrued or paid to participants	(2,574,345)	(2,694,674)
Saddlebrook Rental Pool Operation [Member] | Maintenance Escrow Fund [Member]
Supplementary Financial Statements For Owners Participating In Condo Rental Pool Agreement [Line Items]
Balances, beginning of year	334,392	371,247
Additions
Amount withheld from distribution fund	507,749	527,275
Unit owner payments	2,098,143	168,761
Interest earned	180	111
Reductions
Unit renovations	(400,280)	(102,377)
Refunds of excess amounts in escrow accounts	(7,148)	(30,436)
Maintenance charges	(260,329)	(376,205)
Linen expense	(136,794)	(223,984)
Reductions
Balances, end of year	$ 2,135,913	$ 334,392