Debt (Receivable-Backed Notes Payable, Narrative) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Apr. 06, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Receivable backed notes payable - non-recourse	$ 325,512		$ 336,421	[1]
Liberty Bank Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 50,000
Percent Of Future Advances Of Unpaid Principal balance Of Qualified Timeshare Loans To Agents	85.00%
Percent Of Future Advances Of Unpaid Principal balance Of Non-Conforming Qualified Timeshare Loans To Agents	60.00%
Liberty Bank Facility [Member] | Minimum [Member]
Debt Instrument [Line Items]
Effective yield rate	4.00%
Liberty Bank Facility [Member] | Prime Rate [Member]
Debt Instrument [Line Items]
Basis spread on rate	0.50%
Quorum Purchase Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 50,000
Interest rate		4.95%
Future advance rate percent	0.25%	0.50%
Gross advance rate	85.00%
Quorum Purchase Facility [Member] | Interest Rate at 5.5% [Member]
Debt Instrument [Line Items]
Effective yield rate	5.50%
Receivable backed notes payable - non-recourse	$ 2,400
Quorum Purchase Facility [Member] | Interest Rate at 4.95% [Member]
Debt Instrument [Line Items]
Effective yield rate	4.95%
Receivable backed notes payable - non-recourse	$ 18,900
Quorum Purchase Facility [Member] | Interest Rate at 5.0% [Member]
Debt Instrument [Line Items]
Effective yield rate	5.00%
Receivable backed notes payable - non-recourse	$ 2,900
Quorum Purchase Facility [Member] | Interest Rate at 4.75% [Member]
Debt Instrument [Line Items]
Effective yield rate	4.75%
Receivable backed notes payable - non-recourse	$ 5,500
Non-Recourse Receivable Backed Notes Payable [Member]
Debt Instrument [Line Items]
Receivable backed notes payable - non-recourse	325,512		336,421
Debt issuance cost	5,346		6,148
Non-Recourse Receivable Backed Notes Payable [Member] | Quorum Purchase Facility [Member]
Debt Instrument [Line Items]
Receivable backed notes payable - non-recourse	$ 29,743		$ 16,771
Non-Recourse Receivable Backed Notes Payable [Member] | Quorum Purchase Facility [Member] | Maximum [Member]
Debt Instrument [Line Items]
Interest rate	5.50%		6.90%
Non-Recourse Receivable Backed Notes Payable [Member] | Quorum Purchase Facility [Member] | Minimum [Member]
Debt Instrument [Line Items]
Interest rate	4.75%		4.75%

[1] * See Note 2 for summary of adjustments.