Segments Information - Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Segments Information
Revenue	$ 1,806,505	$ 1,900,721	$ 3,170,522	$ 3,387,601
Intersegment Eliminations
Segments Information
Revenue	(4,438)	(4,308)	(8,089)	(7,730)
Good Sam Services and Plans
Segments Information
Revenue	52,548	51,038	98,229	97,405
Good Sam Services and Plans | Intersegment Eliminations
Segments Information
Revenue	(229)	(94)	(1,159)	(690)
New vehicles
Segments Information
Revenue	847,105	800,903	1,503,191	1,447,655
New vehicles | Intersegment Eliminations
Segments Information
Revenue	(1,870)	(1,600)	(3,305)	(2,778)
Used vehicles
Segments Information
Revenue	480,774	622,962	818,459	1,067,708
Used vehicles | Intersegment Eliminations
Segments Information
Revenue	(1,113)	(1,329)	(1,880)	(2,270)
Products, service and other
Segments Information
Revenue	235,947	247,760	413,841	455,421
Products, service and other | Intersegment Eliminations
Segments Information
Revenue	(165)	(198)	(286)	(372)
Finance and insurance, net
Segments Information
Revenue	179,016	166,934	314,470	296,706
Finance and insurance, net | Intersegment Eliminations
Segments Information
Revenue	(1,061)	(1,087)	(1,459)	(1,620)
Good Sam Club
Segments Information
Revenue	11,115	11,124	22,332	22,706
Good Sam Services and Plans | Operating Segments
Segments Information
Revenue	52,777	51,132	99,388	98,095
Good Sam Services and Plans | Good Sam Services and Plans | Operating Segments
Segments Information
Revenue	52,777	51,132	99,388	98,095
RV and Outdoor Retail
Segments Information
Revenue	1,753,957	1,849,683	3,072,293	3,290,196
RV and Outdoor Retail | Operating Segments
Segments Information
Revenue	1,758,166	1,853,897	3,079,223	3,297,236
RV and Outdoor Retail | New vehicles
Segments Information
Revenue	847,105	800,903	1,503,191	1,447,655
RV and Outdoor Retail | New vehicles | Operating Segments
Segments Information
Revenue	848,975	802,503	1,506,496	1,450,433
RV and Outdoor Retail | Used vehicles
Segments Information
Revenue	480,774	622,962	818,459	1,067,708
RV and Outdoor Retail | Used vehicles | Operating Segments
Segments Information
Revenue	481,887	624,291	820,339	1,069,978
RV and Outdoor Retail | Products, service and other
Segments Information
Revenue	235,947	247,760	413,841	455,421
RV and Outdoor Retail | Products, service and other | Operating Segments
Segments Information
Revenue	236,112	247,958	414,127	455,793
RV and Outdoor Retail | Finance and insurance, net
Segments Information
Revenue	179,016	166,934	314,470	296,706
RV and Outdoor Retail | Finance and insurance, net | Operating Segments
Segments Information
Revenue	180,077	168,021	315,929	298,326
RV and Outdoor Retail | Good Sam Club
Segments Information
Revenue	11,115	11,124	22,332	22,706
RV and Outdoor Retail | Good Sam Club | Operating Segments
Segments Information
Revenue	$ 11,115	$ 11,124	$ 22,332	$ 22,706