Revenue From Contracts with Customers - Schedule of Disaggregated Revenue From Contracts With Customers By Product Type (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenue from External Customer [Line Items]
Revenue from contracts with customers	$ 89,004	$ 76,806	$ 66,187
Motor club revenue
Revenue from External Customer [Line Items]
Revenue from contracts with customers	36,076	32,242	31,501
Warranty coverage revenue
Revenue from External Customer [Line Items]
Revenue from contracts with customers	27,597	26,058	18,385
Vessel related revenue
Revenue from External Customer [Line Items]
Revenue from contracts with customers	16,747	3,972	0
Management fee income
Revenue from External Customer [Line Items]
Revenue from contracts with customers	1,267	6,694	8,314
Other
Revenue from External Customer [Line Items]
Revenue from contracts with customers	$ 7,317	$ 7,840	$ 7,987