Goodwill and Intangible Assets - Finite-lived Intangible Assets and Related Accumulated Amortization (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Intangible Assets
Cost or Fair Value	$ 55,756	$ 55,637	$ 54,726
Accumulated Amortization	(42,758)	(41,920)	(39,345)
Net	12,998	13,717	15,381
Good Sam services and plans | Membership, customer lists and other
Intangible Assets
Cost or Fair Value	9,740	9,640	9,640
Accumulated Amortization	(9,316)	(9,246)	(9,040)
Net	424	394	600
Good Sam services and plans | Trademarks and trade names
Intangible Assets
Cost or Fair Value	2,132	2,132	2,132
Accumulated Amortization	(273)	(238)	(130)
Net	1,859	1,894	2,002
Good Sam services and plans | Websites
Intangible Assets
Cost or Fair Value	3,050	3,050	3,050
Accumulated Amortization	(1,227)	(1,118)	(792)
Net	1,823	1,932	2,258
RV and Outdoor Retail | Customer lists, domain names and other
Intangible Assets
Cost or Fair Value	5,543
Accumulated Amortization	(3,439)
Net	2,104
RV and Outdoor Retail | Customer lists and domain names
Intangible Assets
Cost or Fair Value		5,543	4,872
Accumulated Amortization		(3,269)	(3,025)
Net		2,274	1,847
RV and Outdoor Retail | Supplier Lists
Intangible Assets
Cost or Fair Value	1,696	1,696	1,696
Accumulated Amortization	(1,187)	(1,102)	(824)
Net	509	594	872
RV and Outdoor Retail | Trademarks and trade names
Intangible Assets
Cost or Fair Value	27,251	27,251	27,251
Accumulated Amortization	(21,725)	(21,390)	(20,049)
Net	5,526	5,861	7,202
RV and Outdoor Retail | Websites
Intangible Assets
Cost or Fair Value	6,344	6,325	6,085
Accumulated Amortization	(5,591)	(5,557)	(5,485)
Net	$ 753	$ 768	$ 600