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Goodwill and Intangible Assets - Change in Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Dec. 31, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2021
Goodwill
Balance (excluding impairment charges)				$ 725,471
Accumulated impairment charges				(241,837)
Balance	$ 533,217	$ 622,423	$ 483,634
Acquisitions	89,206	65,716	49,583
Balance	622,423	688,139	533,217
Good Sam Services and Plans
Goodwill
Balance (excluding impairment charges)				70,713
Accumulated impairment charges				(46,884)
Balance	24,234	24,234	23,829
Acquisitions			405
Balance	24,234	24,234	24,234
RV and Outdoor Retail
Goodwill
Balance (excluding impairment charges)				654,758
Accumulated impairment charges				$ (194,953)
Balance	508,983	598,189	459,805
Acquisitions	89,206	65,716	49,178
Balance	$ 598,189	$ 663,905	$ 508,983
Trademarks and trade names \| Good Sam Services and Plans
Goodwill
Useful lives (in years)			15 years