Goodwill and Intangible Assets - Change in Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Goodwill
Balance (excluding impairment charges)			$ 864,260
Accumulated impairment charges			(241,837)
Balance	$ 711,222	$ 622,423
Acquisitions	31,701	88,799
Divestures	(8,900)
Balance	734,023	711,222
Good Sam Services and Plans
Goodwill
Balance (excluding impairment charges)			71,118
Accumulated impairment charges			(46,884)
Balance	24,234	24,234
Acquisitions	1,561
Balance	25,795	24,234
RV and Outdoor Retail
Goodwill
Balance (excluding impairment charges)			793,142
Accumulated impairment charges			$ (194,953)
Balance	686,988	598,189
Acquisitions	30,140	88,799
Goodwill impairment	0	0
Divestures	(8,900)
Balance	$ 708,228	$ 686,988