Segments Information - Segment Adjusted EBITDA (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Revenue:
Revenue	$ 1,975,948	$ 1,806,505	$ 3,389,472	$ 3,170,522
Segment expenses:
Floor plan interest expense	20,989	27,799	$ 39,295	55,681
Segment Reporting, Other Segment Item, Composition, Description			Other segment items include (i) intersegment operating expenses, which are eliminated in our condensed consolidated statements of operations, and (ii) other expense, net excluding loss and/or impairment on investments in equity securities
Operating Segments
Revenue:
Revenue	1,980,292	1,810,943	$ 3,397,028	3,178,611
Segment expenses:
Segment Adjusted EBITDA	147,178	109,510	181,291	121,124
Intersegment Eliminations
Revenue:
Revenue	(4,344)	(4,438)	(7,556)	(8,089)
Good Sam Services and Plans
Revenue:
Revenue	54,213	52,548	100,421	98,229
Good Sam Services and Plans | Operating Segments
Revenue:
Revenue	54,301	52,777	101,317	99,388
Segment expenses:
Adjusted costs applicable to revenue	21,936	17,156	39,613	32,294
Adjusted selling, general and administrative	7,167	7,161	14,809	14,449
Segment Adjusted EBITDA	25,158	28,366	46,268	51,621
Good Sam Services and Plans | Intersegment Eliminations
Revenue:
Revenue	88	229	896	1,159
Segment expenses:
Adjusted costs applicable to revenue	40	94	627	1,024
Good Sam Services and Plans | Good Sam Services and Plans | Operating Segments
Revenue:
Revenue	54,213	52,548	100,421	98,229
Segment expenses:
Segment Adjusted EBITDA	25,158	28,366	46,268	51,621
RV and Outdoor Retail
Revenue:
Revenue	1,921,735	1,753,957	3,289,051	3,072,293
RV and Outdoor Retail | Operating Segments
Revenue:
Revenue	1,925,991	1,758,166	3,295,711	3,079,223
Segment expenses:
Adjusted costs applicable to revenue	1,361,657	1,241,601	2,327,751	2,187,991
Adjusted selling, general and administrative	417,513	404,174	787,245	760,360
Floor plan interest expense	20,989	27,799	39,295	55,681
Other segment items	20	109	(20)	143
Segment Adjusted EBITDA	122,020	81,144	135,023	69,503
RV and Outdoor Retail | Intersegment Eliminations
Revenue:
Revenue	4,256	4,209	6,660	6,930
Segment expenses:
Adjusted costs applicable to revenue	3,792	3,339	6,417	5,545
RV and Outdoor Retail | Good Sam Services and Plans | Operating Segments
Segment expenses:
Segment Adjusted EBITDA	122,020	81,144	135,023	69,503
RV and Outdoor Retail | New vehicles
Revenue:
Revenue	915,106	847,105	1,536,538	1,503,191
RV and Outdoor Retail | New vehicles | Operating Segments
Revenue:
Revenue	915,106	847,105	1,536,538	1,503,191
RV and Outdoor Retail | Used vehicles
Revenue:
Revenue	572,271	480,774	994,622	818,459
RV and Outdoor Retail | Used vehicles | Operating Segments
Revenue:
Revenue	572,271	480,774	994,622	818,459
RV and Outdoor Retail | Products, service and other
Revenue:
Revenue	222,890	235,947	387,882	413,841
RV and Outdoor Retail | Products, service and other | Operating Segments
Revenue:
Revenue	222,890	235,947	387,882	413,841
RV and Outdoor Retail | Finance and insurance, net
Revenue:
Revenue	201,198	179,016	349,865	314,470
RV and Outdoor Retail | Finance and insurance, net | Operating Segments
Revenue:
Revenue	201,198	179,016	349,865	314,470
RV and Outdoor Retail | Good Sam Club
Revenue:
Revenue	10,270	11,115	20,144	22,332
RV and Outdoor Retail | Good Sam Club | Operating Segments
Revenue:
Revenue	$ 10,270	$ 11,115	$ 20,144	$ 22,332