Sale of Vacation Rental Management - (Details) - PCR Rentals Sale - Disposal Group, Disposed of by Sale, Not Discontinued Operations - USD ($) $ in Millions		1 Months Ended
	Feb. 14, 2018	Dec. 31, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Right of first refusal on third party offer to purchase, period after the date of sale		18 months
Right of first refusal on third party offer to purchase, period after PCR note is paid off and after date of sale		9 months
Proceeds from collection of loans receivable	$ 5.0