Goodwill and Intangible Assets - Finite-lived Intangible Assets and Related Accumulated Amortization (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Intangible Assets
Cost or Fair Value	$ 55,711	$ 50,016
Accumulated Amortization	(24,741)	(19,894)
Net	30,970	30,122
Amortization expense	4,800	4,600	$ 5,200
Good Sam Club services and plans \| Membership and customer lists
Intangible Assets
Cost or Fair Value	9,140	9,140
Accumulated Amortization	(8,748)	(8,568)
Net	392	572
Good Sam Club services and plans \| Websites
Intangible Assets
Cost or Fair Value	2,500
Accumulated Amortization	(253)
Net	2,247
RV and Outdoor Retail \| Customer lists and domain names
Intangible Assets
Cost or Fair Value	5,626	1,696
Accumulated Amortization	(2,298)	(85)
Net	3,328	1,611
RV and Outdoor Retail \| Supplier Lists
Intangible Assets
Cost or Fair Value	1,696	3,476
Accumulated Amortization	(424)	(1,930)
Net	1,272	1,546
RV and Outdoor Retail \| Trademarks and trade names
Intangible Assets
Cost or Fair Value	29,564	29,564
Accumulated Amortization	(9,465)	(6,681)
Net	20,099	22,883
RV and Outdoor Retail \| Websites
Intangible Assets
Cost or Fair Value	7,185	6,140
Accumulated Amortization	(3,553)	(2,630)
Net	$ 3,632	$ 3,510

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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