Acquisitions - Goodwill, Revenue and Pre-Tax (Details) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Acquisitions
Proceeds from sale of intangible assets	$ 0	$ 2,595
Websites and developed technology
Acquisitions
Useful lives (in years)		4 years
RV Dealership Groups | Other intangible assets
Acquisitions
Fair value measurement period adjustment of other intangible assets from a RV dealership acquisition		$ 2,600
Useful lives (in years)		15 years
Proceeds from sale of intangible assets			$ 2,600
Assets of Multiple Dealership Locations Acquired
Acquisitions
Goodwill for tax purposes	18,300	$ 30,500
Revenue	150,400	69,000
Pre-tax income (loss)	$ 5,200	1,100
2024 Acquisitions
Acquisitions
Total intangible assets acquired		3,195
2024 Acquisitions | Websites and developed technology
Acquisitions
Total intangible assets acquired		$ 600