Revenue From Contracts With Customers (Revenue Disaggregation) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Total revenue	$ 521,112	$ 740,242	$ 738,320
Sales of VOIs [Member]
Disaggregation of Revenue [Line Items]
Total revenue	173,997	255,375	254,225
Interest income	77,500	80,000	79,400
Fee-Based Sales Commission Revenue [Member]
Disaggregation of Revenue [Line Items]
Total revenue	89,965	207,832	216,422
Resort And Club Management Revenue [Member]
Disaggregation of Revenue [Line Items]
Total revenue	98,233	103,470	99,535
Cost Reimbursements [Member]
Disaggregation of Revenue [Line Items]
Total revenue	64,305	63,889	62,534
Title Fees And Other [Member]
Disaggregation of Revenue [Line Items]
Total revenue	7,568	14,246	12,205
Other Revenue [Member]
Disaggregation of Revenue [Line Items]
Total revenue	6,022	7,528	6,284
Revenue From Customers [Member]
Disaggregation of Revenue [Line Items]
Total revenue	440,090	652,340	651,205
Interest Income [Member]
Disaggregation of Revenue [Line Items]
Total revenue	$ 81,022	$ 87,902	85,914
Other Income, Net [Member]
Disaggregation of Revenue [Line Items]
Total revenue			$ 1,201