v3.26.1
Segment Reporting (Disaggregation of Revenue) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Disaggregation of Revenue [Line Items]        
Net sales $ 968,675 $ 1,107,250 $ 2,059,192 $ 2,152,840
OEM Segment        
Disaggregation of Revenue [Line Items]        
Net sales 674,793 839,559 1,527,607 1,663,114
Travel trailers and fifth-wheels        
Disaggregation of Revenue [Line Items]        
Net sales 282,349 441,926 724,355 913,120
Motorhomes        
Disaggregation of Revenue [Line Items]        
Net sales 53,771 61,372 121,609 120,980
Adjacent industries OEMs        
Disaggregation of Revenue [Line Items]        
Net sales 338,673 336,261 681,643 629,014
Aftermarket Segment        
Disaggregation of Revenue [Line Items]        
Net sales 293,882 267,691 531,585 489,726
Chassis, chassis parts and slide-out mechanisms | OEM Segment        
Disaggregation of Revenue [Line Items]        
Net sales 190,836 230,542 428,797 473,462
Windows and doors | OEM Segment        
Disaggregation of Revenue [Line Items]        
Net sales 217,151 225,251 452,710 454,772
Furniture and mattresses | OEM Segment        
Disaggregation of Revenue [Line Items]        
Net sales 100,192 130,909 236,949 244,089
Axles and suspension solutions | OEM Segment        
Disaggregation of Revenue [Line Items]        
Net sales 76,770 93,918 160,686 182,528
Appliances | OEM Segment        
Disaggregation of Revenue [Line Items]        
Net sales 28,981 87,441 108,388 165,091
Other | OEM Segment        
Disaggregation of Revenue [Line Items]        
Net sales 60,863 71,498 140,077 143,172
U.S.        
Disaggregation of Revenue [Line Items]        
Net sales 860,993 1,002,960 1,847,800 1,950,756
U.S. | OEM Segment        
Disaggregation of Revenue [Line Items]        
Net sales 595,241 759,668 1,366,616 1,507,741
U.S. | Travel trailers and fifth-wheels        
Disaggregation of Revenue [Line Items]        
Net sales 277,881 437,205 715,216 903,558
U.S. | Motorhomes        
Disaggregation of Revenue [Line Items]        
Net sales 28,156 36,514 68,925 72,703
U.S. | Adjacent industries OEMs        
Disaggregation of Revenue [Line Items]        
Net sales 289,204 285,949 582,475 531,480
U.S. | Aftermarket Segment        
Disaggregation of Revenue [Line Items]        
Net sales 265,752 243,292 481,184 443,015
Non-US        
Disaggregation of Revenue [Line Items]        
Net sales 107,682 104,290 211,392 202,084
Non-US | OEM Segment        
Disaggregation of Revenue [Line Items]        
Net sales 79,552 79,891 160,991 155,373
Non-US | Travel trailers and fifth-wheels        
Disaggregation of Revenue [Line Items]        
Net sales 4,468 4,721 9,139 9,562
Non-US | Motorhomes        
Disaggregation of Revenue [Line Items]        
Net sales 25,615 24,858 52,684 48,277
Non-US | Adjacent industries OEMs        
Disaggregation of Revenue [Line Items]        
Net sales 49,469 50,312 99,168 97,534
Non-US | Aftermarket Segment        
Disaggregation of Revenue [Line Items]        
Net sales $ 28,130 $ 24,399 $ 50,401 $ 46,711