Segment Reporting (Schedule of Net Sales by Segment) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information
Net sales	$ 3,784,808	$ 5,207,143	$ 4,472,697
OEM Segment
Segment Reporting Information
Net sales	2,903,742	4,315,870	3,643,612
Travel Trailer and Fifth Wheels
Segment Reporting Information
Net sales	1,358,853	2,617,585	2,295,612
Motorhomes
Segment Reporting Information
Net sales	269,356	339,097	258,995
OEMs Adjacent Industries
Segment Reporting Information
Net sales	1,275,533	1,359,188	1,089,005
Aftermarket Segment
Segment Reporting Information
Net sales	881,066	891,273	829,085
U.S.
Segment Reporting Information
Net sales	3,371,229	4,809,650	4,098,314
U.S. | OEM Segment
Segment Reporting Information
Net sales	2,557,126	3,984,755	3,329,521
U.S. | Travel Trailer and Fifth Wheels
Segment Reporting Information
Net sales	1,310,638	2,561,683	2,229,839
U.S. | Motorhomes
Segment Reporting Information
Net sales	160,857	238,613	160,615
U.S. | OEMs Adjacent Industries
Segment Reporting Information
Net sales	1,085,631	1,184,459	939,067
U.S. | Aftermarket Segment
Segment Reporting Information
Net sales	814,103	824,895	768,793
Int'l
Segment Reporting Information
Net sales	413,579	397,493	374,383
Int'l | OEM Segment
Segment Reporting Information
Net sales	346,616	331,115	314,091
Int'l | Travel Trailer and Fifth Wheels
Segment Reporting Information
Net sales	48,215	55,902	65,773
Int'l | Motorhomes
Segment Reporting Information
Net sales	108,499	100,484	98,380
Int'l | OEMs Adjacent Industries
Segment Reporting Information
Net sales	189,902	174,729	149,938
Int'l | Aftermarket Segment
Segment Reporting Information
Net sales	$ 66,963	$ 66,378	$ 60,292