Segments Information - Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Segments Information
Revenue	$ 1,364,017	$ 1,486,880
Intersegment Eliminations
Segments Information
Revenue	(3,651)	(3,422)
Good Sam Services and Plans
Segments Information
Revenue	45,681	46,367
Good Sam Services and Plans | Intersegment Eliminations
Segments Information
Revenue	(930)	(596)
New vehicles
Segments Information
Revenue	656,086	646,752
New vehicles | Intersegment Eliminations
Segments Information
Revenue	(1,435)	(1,178)
Used vehicles
Segments Information
Revenue	337,685	444,746
Used vehicles | Intersegment Eliminations
Segments Information
Revenue	(767)	(941)
Products, service and other
Segments Information
Revenue	177,894	207,661
Products, service and other | Intersegment Eliminations
Segments Information
Revenue	(121)	(174)
Finance and insurance, net
Segments Information
Revenue	135,454	129,772
Finance and insurance, net | Intersegment Eliminations
Segments Information
Revenue	(398)	(533)
Good Sam Club
Segments Information
Revenue	11,217	11,582
Good Sam Services and Plans | Operating Segments
Segments Information
Revenue	46,611	46,963
Good Sam Services and Plans | Good Sam Services and Plans | Operating Segments
Segments Information
Revenue	46,611	46,963
RV and Outdoor Retail
Segments Information
Revenue	1,318,336	1,440,513
RV and Outdoor Retail | Operating Segments
Segments Information
Revenue	1,321,057	1,443,339
RV and Outdoor Retail | New vehicles
Segments Information
Revenue	656,086	646,752
RV and Outdoor Retail | New vehicles | Operating Segments
Segments Information
Revenue	657,521	647,930
RV and Outdoor Retail | Used vehicles
Segments Information
Revenue	337,685	444,746
RV and Outdoor Retail | Used vehicles | Operating Segments
Segments Information
Revenue	338,452	445,687
RV and Outdoor Retail | Products, service and other
Segments Information
Revenue	177,894	207,661
RV and Outdoor Retail | Products, service and other | Operating Segments
Segments Information
Revenue	178,015	207,835
RV and Outdoor Retail | Finance and insurance, net
Segments Information
Revenue	135,454	129,772
RV and Outdoor Retail | Finance and insurance, net | Operating Segments
Segments Information
Revenue	135,852	130,305
RV and Outdoor Retail | Good Sam Club
Segments Information
Revenue	11,217	11,582
RV and Outdoor Retail | Good Sam Club | Operating Segments
Segments Information
Revenue	$ 11,217	$ 11,582