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Goodwill and Intangible Assets - Change in Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Goodwill
Balance (excluding impairment charges)				$ 628,778
Accumulated impairment charges				(241,837)
Balance	$ 386,941	$ 413,123	$ 386,941
Acquisitions		70,511	26,182
Balance		$ 483,634	413,123
Useful lives (in years)		9 years 9 months 18 days
Good Sam Services and Plans
Goodwill
Balance (excluding impairment charges)				70,713
Accumulated impairment charges				(46,884)
Balance	23,829	$ 23,829	23,829
Acquisitions		0	0
Balance		23,829	23,829
RV and Outdoor Retail
Goodwill
Balance (excluding impairment charges)				558,065
Accumulated impairment charges				$ (194,953)
Balance	363,112	389,294	363,112
Acquisitions		70,511	26,182
Goodwill impairment	$ 0	0	0
Balance		$ 459,805	$ 389,294
Membership and customer lists \| Good Sam Services and Plans
Goodwill
Useful lives (in years)		5 years 10 months 24 days
Customer lists and domain names \| RV and Outdoor Retail
Goodwill
Useful lives (in years)		7 years 3 months 18 days
Supplier Lists \| RV and Outdoor Retail
Goodwill
Useful lives (in years)		5 years
Trademarks and trade names \| RV and Outdoor Retail
Goodwill
Useful lives (in years)		11 years 2 months 12 days
Websites \| Good Sam Services and Plans
Goodwill
Useful lives (in years)		7 years
Websites \| RV and Outdoor Retail
Goodwill
Useful lives (in years)		7 years 9 months 18 days