Significant Accounting Policies (Revenue Disaggregation) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Disaggregation of Revenue [Line Items]
Total revenues		$ 194,937	$ 187,383	$ 362,460	$ 349,705
Sales of VOIs [Member]
Disaggregation of Revenue [Line Items]
Total revenues	[1]	68,573	59,405	124,714	113,641
Fee-Based Sales Commission Revenue [Member]
Disaggregation of Revenue [Line Items]
Total revenues	[2]	60,086	63,915	105,940	109,069
Resort And Club Management Revenue [Member]
Disaggregation of Revenue [Line Items]
Total revenues	[2]	25,562	22,660	49,514	44,687
Cost Reimbursements [Member]
Disaggregation of Revenue [Line Items]
Total revenues	[2]	14,059	11,893	30,260	26,563
Title Fees [Member]
Disaggregation of Revenue [Line Items]
Total revenues	[1]	3,175	5,737	5,863	8,554
Other Revenue [Member]
Disaggregation of Revenue [Line Items]
Total revenues	[2]	1,654	1,538	3,038	2,815
Revenue From Customers [Member]
Disaggregation of Revenue [Line Items]
Total revenues		173,109	165,148	319,329	305,329
Interest Income [Member]
Disaggregation of Revenue [Line Items]
Total revenues	[1]	21,118	21,991	42,240	44,377
Other Income (Expense), Net [Member]
Disaggregation of Revenue [Line Items]
Total revenues		$ 710	$ 244	$ 891	$ (1)

[1] Included in our sales of VOIs and financing segment described in Note 11.

[2] Included in our resort operations and club management segment described in Note 11.