Acquisitions - Assets (Liabilities) Acquired (Assumed) at Fair Value (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Tangible assets (liabilities) acquired (assumed):
Goodwill	$ 507,284		$ 483,634
Cash paid for acquisitions, net of cash acquired	38,188	$ 99,016
RV and Outdoor Retail
Tangible assets (liabilities) acquired (assumed):
Goodwill	483,050		459,805
RV and Outdoor Retail | 2022 Acquisitions
Tangible assets (liabilities) acquired (assumed):
Accounts receivable, net	(68)
Inventories, net	11,775
Prepaid expenses and other assets	13
Property and equipment, net	70
Operating lease assets	0
Current portion of operating lease liabilities	0
Operating lease liabilities, net of current portion	0
Accrued liabilities	67
Other current liabilities	49
Total tangible net assets acquired	11,906
Total intangible assets acquired	2,632
Goodwill	23,650
Cash paid for acquisitions, net of cash acquired	38,188
Inventory purchases financed via floor plan	(5,876)
Cash payment net of floor plan financing	32,312
RV and Outdoor Retail | 2021 Acquisitions
Tangible assets (liabilities) acquired (assumed):
Accounts receivable, net		847
Inventories, net		26,523
Prepaid expenses and other assets		126
Property and equipment, net		1,348
Operating lease assets		1,222
Current portion of operating lease liabilities		(195)
Operating lease liabilities, net of current portion		(1,027)
Accrued liabilities		0
Other current liabilities		0
Total tangible net assets acquired		28,844
Total intangible assets acquired		0
Goodwill		70,172
Cash paid for acquisitions, net of cash acquired		99,016
Inventory purchases financed via floor plan		(19,537)
Cash payment net of floor plan financing		$ 79,479
Good Sam Services and Plans
Tangible assets (liabilities) acquired (assumed):
Goodwill	$ 24,234		$ 23,829