Goodwill and Intangible Assets - Finite-lived Intangible Assets and Related Accumulated Amortization (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024	Jun. 30, 2024
Intangible Assets
Cost or Fair Value	$ 61,853	$ 62,050	$ 62,047
Accumulated Amortization	(44,251)	(42,581)	(40,693)
Net	17,602	19,469	21,354
Good Sam Services and Plans | Membership, customer lists and other
Intangible Assets
Cost or Fair Value	9,740	9,740	9,740
Accumulated Amortization	(9,656)	(9,537)	(9,389)
Net	84	203	351
Good Sam Services and Plans | Trademarks and trade names
Intangible Assets
Cost or Fair Value	2,132	2,132	2,132
Accumulated Amortization	(450)	(379)	(308)
Net	1,682	1,753	1,824
Good Sam Services and Plans | Websites and developed technology
Intangible Assets
Cost or Fair Value	3,650	3,650	3,650
Accumulated Amortization	(1,891)	(1,614)	(1,336)
Net	1,759	2,036	2,314
RV and Outdoor Retail | Customer lists, domain names and other
Intangible Assets
Cost or Fair Value	4,154		4,154
Accumulated Amortization	(2,952)		(2,551)
Net	1,202		1,603
RV and Outdoor Retail | Customer lists and domain names
Intangible Assets
Cost or Fair Value		4,154
Accumulated Amortization		(2,752)
Net		1,402
RV and Outdoor Retail | Supplier lists and agreements
Intangible Assets
Cost or Fair Value	9,500	9,500	9,500
Accumulated Amortization	(1,039)	(594)	(148)
Net	8,461	8,906	9,352
RV and Outdoor Retail | Trademarks and trade names
Intangible Assets
Cost or Fair Value	26,526	26,526	26,526
Accumulated Amortization	(22,675)	(22,005)	(21,335)
Net	3,851	4,521	5,191
RV and Outdoor Retail | Websites and developed technology
Intangible Assets
Cost or Fair Value	6,151	6,348	6,345
Accumulated Amortization	(5,588)	(5,700)	(5,626)
Net	$ 563	$ 648	$ 719