Basis of Presentation and Significant Accounting Policies (Schedule of Deferred Income) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Deferred Revenue Arrangement [Line Items]
Deferred income	$ 36,311	$ 37,015
Deferred Sampler Program Income [Member]
Deferred Revenue Arrangement [Line Items]
Deferred income	10,056	11,821
Deferred VOI Sales Revenue [Member]
Deferred Revenue Arrangement [Line Items]
Deferred income	22,461	21,126
Other Deferred Income [Member]
Deferred Revenue Arrangement [Line Items]
Deferred income	$ 3,794	$ 4,068