Goodwill and Intangible Assets - Change in Goodwill (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2025	Dec. 31, 2024	Jun. 30, 2024	Dec. 31, 2023
Goodwill
Balance (excluding impairment charges)				$ 953,059
Accumulated impairment charges				(241,837)
Balance	$ 734,023	$ 731,015	$ 711,222
Acquisitions	17,951	3,008	28,692
Divestiture	(3,414)		(8,899)
Balance	748,561	734,023	731,015
Good Sam Services and Plans
Goodwill
Balance (excluding impairment charges)				71,118
Accumulated impairment charges				(46,884)
Balance	25,795	25,795	24,234
Acquisitions			1,561
Balance	25,795	25,795	25,795
RV and Outdoor Retail
Goodwill
Balance (excluding impairment charges)				881,941
Accumulated impairment charges				$ (194,953)
Balance	708,228	705,220	686,988
Acquisitions	17,951	3,008	27,131
Divestiture	(3,414)		(8,899)
Balance	$ 722,766	$ 708,228	$ 705,220