Segments Information - Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Segments Information
Revenue	$ 1,900,721	$ 2,168,632	$ 3,387,601	$ 3,831,028
Intersegment Eliminations
Segments Information
Revenue	(4,308)	(9,385)	(7,730)	(16,704)
Good Sam Services and Plans
Segments Information
Revenue	51,038	49,593	97,405	94,152
Good Sam Services and Plans | Intersegment Eliminations
Segments Information
Revenue	(94)	(79)	(690)	(349)
New vehicles
Segments Information
Revenue	800,903	1,077,252	1,447,655	1,912,211
New vehicles | Intersegment Eliminations
Segments Information
Revenue	(1,600)	(1,971)	(2,778)	(3,584)
Used vehicles
Segments Information
Revenue	622,962	555,958	1,067,708	958,990
Used vehicles | Intersegment Eliminations
Segments Information
Revenue	(1,329)	(1,224)	(2,270)	(2,010)
Products, service and other
Segments Information
Revenue	247,760	278,001	455,421	492,974
Products, service and other | Intersegment Eliminations
Segments Information
Revenue	(198)	(328)	(372)	(573)
Finance and insurance, net
Segments Information
Revenue	166,934	195,407	296,706	348,785
Finance and insurance, net | Intersegment Eliminations
Segments Information
Revenue	(1,087)	(5,783)	(1,620)	(10,188)
Good Sam Club
Segments Information
Revenue	11,124	12,421	22,706	23,916
Good Sam Services and Plans | Operating Segments
Segments Information
Revenue	51,132	49,672	98,095	94,501
Good Sam Services and Plans | Good Sam Services and Plans | Operating Segments
Segments Information
Revenue	51,132	49,672	98,095	94,501
RV and Outdoor Retail
Segments Information
Revenue	1,849,683	2,119,039	3,290,196	3,736,876
RV and Outdoor Retail | Operating Segments
Segments Information
Revenue	1,853,897	2,128,345	3,297,236	3,753,231
RV and Outdoor Retail | New vehicles
Segments Information
Revenue	800,903	1,077,252	1,447,655	1,912,211
RV and Outdoor Retail | New vehicles | Operating Segments
Segments Information
Revenue	802,503	1,079,223	1,450,433	1,915,795
RV and Outdoor Retail | Used vehicles
Segments Information
Revenue	622,962	555,958	1,067,708	958,990
RV and Outdoor Retail | Used vehicles | Operating Segments
Segments Information
Revenue	624,291	557,182	1,069,978	961,000
RV and Outdoor Retail | Products, service and other
Segments Information
Revenue	247,760	278,001	455,421	492,974
RV and Outdoor Retail | Products, service and other | Operating Segments
Segments Information
Revenue	247,958	278,329	455,793	493,547
RV and Outdoor Retail | Finance and insurance, net
Segments Information
Revenue	166,934	195,407	296,706	348,785
RV and Outdoor Retail | Finance and insurance, net | Operating Segments
Segments Information
Revenue	168,021	201,190	298,326	358,973
RV and Outdoor Retail | Good Sam Club
Segments Information
Revenue	11,124	12,421	22,706	23,916
RV and Outdoor Retail | Good Sam Club | Operating Segments
Segments Information
Revenue	$ 11,124	$ 12,421	$ 22,706	$ 23,916