Goodwill and Intangible Assets - Finite-lived Intangible Assets and Related Accumulated Amortization (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024	Sep. 30, 2024
Intangible Assets
Carrying Value	$ 61,307	$ 62,050	$ 62,047
Accumulated Amortization	(44,604)	(42,581)	(41,634)
Net	16,703	19,469	20,413
Good Sam Services and Plans | Membership, customer lists and other
Intangible Assets
Carrying Value	9,194	9,740	9,740
Accumulated Amortization	(9,133)	(9,537)	(9,464)
Net	61	203	276
Good Sam Services and Plans | Trademarks and trade names
Intangible Assets
Carrying Value	2,132	2,132	2,132
Accumulated Amortization	(486)	(379)	(343)
Net	1,646	1,753	1,789
Good Sam Services and Plans | Websites and developed technology
Intangible Assets
Carrying Value	3,650	3,650	3,650
Accumulated Amortization	(2,031)	(1,614)	(1,475)
Net	1,619	2,036	2,175
RV and Outdoor Retail | Customer lists, domain names and other
Intangible Assets
Carrying Value	4,154		4,154
Accumulated Amortization	(3,052)		(2,652)
Net	1,102		1,502
RV and Outdoor Retail | Customer lists and domain names
Intangible Assets
Carrying Value		4,154
Accumulated Amortization		(2,752)
Net		1,402
RV and Outdoor Retail | Supplier lists and agreements
Intangible Assets
Carrying Value	9,500	9,500	9,500
Accumulated Amortization	(1,262)	(594)	(371)
Net	8,238	8,906	9,129
RV and Outdoor Retail | Trademarks and trade names
Intangible Assets
Carrying Value	26,526	26,526	26,526
Accumulated Amortization	(23,010)	(22,005)	(21,670)
Net	3,516	4,521	4,856
RV and Outdoor Retail | Websites and developed technology
Intangible Assets
Carrying Value	6,151	6,348	6,345
Accumulated Amortization	(5,630)	(5,700)	(5,659)
Net	$ 521	$ 648	$ 686