Segment Reporting (Schedule of Net Sales by Product) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information
Total net sales	$ 3,784,808	$ 5,207,143	$ 4,472,697
OEM Segment
Segment Reporting Information
Total net sales	2,903,742	4,315,870	3,643,612
Aftermarket Segment
Segment Reporting Information
Total net sales	881,066	891,273	829,085
Chassis, Chassis Parts and Slide-out Mechanisms | OEM Segment
Segment Reporting Information
Total net sales	785,158	1,563,168	1,320,718
Windows and Doors | OEM Segment
Segment Reporting Information
Total net sales	851,761	1,085,302	1,014,332
Furniture and Mattresses | OEM Segment
Segment Reporting Information
Total net sales	464,113	790,664	701,876
Axles and Suspension Solutions | OEM Segment
Segment Reporting Information
Total net sales	313,224	306,843	248,144
Other Products | OEM Segment
Segment Reporting Information
Total net sales	$ 489,486	$ 569,893	$ 358,542