Segments Information - Other Interest Expense, Net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segments Information
Other interest expense, net	$ 14,547	$ 18,211	$ 29,205	$ 35,854
Operating Segments
Segments Information
Other interest expense, net	2,082	2,264	3,974	4,412
Corporate, Non-Segment
Segments Information
Other interest expense, net	12,465	15,947	25,231	31,442
Good Sam Services and Plans | Operating Segments
Segments Information
Other interest expense, net		(1)		(1)
RV and Outdoor Retail | Operating Segments
Segments Information
Other interest expense, net	$ 2,082	$ 2,265	$ 3,974	$ 4,413