Summary of Significant Accounting Policies - Description of Business (Details) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2020 USD ($) location	Jun. 30, 2020 USD ($) location segment	Jun. 30, 2020 location	Dec. 31, 2019 USD ($) location	May 31, 2020 USD ($)
Segments Information
Number of reportable segments | segment		2
Number of stores	164	164	227
Number of stores, beginning of period			227
Number of locations opened			6
Closed/divested			(64)
Temporarily closed			(5)
Number of stores, end of period	164	164	164
Liquidation of inventory | $	$ 5,247
Lease payment deferrals | $					$ 14,000
RV Dealerships
Segments Information
Number of stores	152	152	152
Number of stores, beginning of period			151
Number of locations opened			6
Closed/divested			(7)
Temporarily closed			(3)
Number of locations converted			5
Number of stores, end of period	152	152	152
RV Service And Retail Centers
Segments Information
Number of stores	10	10	10
Number of stores, beginning of period			14
Closed/divested			(2)
Number of locations converted			(2)
Number of stores, end of period	10	10	10
Other Retail Stores
Segments Information
Number of stores	2	2	2
Number of stores, beginning of period			62
Closed/divested			(55)
Temporarily closed			(2)
Number of locations converted			(3)
Number of stores, end of period	2	2	2
CWH | CWGS, LLC
Segments Information
Ownership interest		42.30%		42.00%
2019 Strategic Shift
Segments Information
Liquidation of inventory | $		$ 12,118
2019 Strategic Shift | Non RV Retail Stores
Segments Information
Closed/divested				34
2019 Strategic Shift | Incremental inventory reserve charges | Non RV Retail Stores
Segments Information
Liquidation of inventory | $				$ 108,000