Segment Reporting (Schedule of Net Sales by Product) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information
Total net sales	$ 5,207,143	$ 4,472,697	$ 2,796,166
OEM Segment
Segment Reporting Information
Total net sales	4,315,870	3,643,612	2,167,911
Aftermarket Segment
Segment Reporting Information
Total net sales	891,273	829,085	628,255
Chassis, Chassis Parts and Slide-out Mechanisms | OEM Segment
Segment Reporting Information
Total net sales	1,563,168	1,320,718	815,706
Windows and Doors | OEM Segment
Segment Reporting Information
Total net sales	1,085,302	1,014,332	620,372
Furniture and Mattresses | OEM Segment
Segment Reporting Information
Total net sales	790,664	701,876	351,107
Axles and Suspension Solutions | OEM Segment
Segment Reporting Information
Total net sales	306,843	248,144	145,989
Other Products | OEM Segment
Segment Reporting Information
Total net sales	$ 569,893	$ 358,542	$ 234,737