v3.26.3
Segment Information and Geographic Data - Schedule of Net Sales (Revenue), Gross Profit, and Operating Income (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 26, 2026
Sep. 27, 2025
Sep. 26, 2026
Sep. 27, 2025
Segment Reporting Information [Line Items]        
Net sales $ 1,986,076 $ 1,770,901 $ 5,761,658 $ 5,120,564
Cost of goods sold 728,308 724,414 2,199,580 2,122,521
Gross profit 1,257,768 1,046,487 3,562,078 2,998,043
Research and development expense 312,916 286,464 912,673 831,247
Selling, general and administrative expenses 333,204 303,220 990,584 904,874
Operating income 611,648 456,803 1,658,821 1,261,922
Fitness Segment [Member]        
Segment Reporting Information [Line Items]        
Net sales 694,328 601,013 1,997,974 1,591,159
Cost of goods sold 259,872 238,164 744,273 643,498
Gross profit 434,456 362,849 1,253,701 947,661
Research and development expense 70,106 55,192 196,771 158,344
Selling, general and administrative expenses 133,716 114,057 391,637 320,374
Operating income 230,634 193,600 665,293 468,943
Outdoor Segment [Member]        
Segment Reporting Information [Line Items]        
Net sales 597,301 497,598 1,497,571 1,426,451
Cost of goods sold 190,570 167,849 480,579 489,738
Gross profit 406,731 329,749 1,016,992 936,713
Research and development expense 75,855 68,497 220,349 198,557
Selling, general and administrative expenses 97,833 91,518 281,227 281,754
Operating income 233,043 169,734 515,416 456,402
Aviation Segment [Member]        
Segment Reporting Information [Line Items]        
Net sales 252,657 240,445 785,248 712,926
Cost of goods sold 56,236 59,737 189,546 178,844
Gross profit 196,421 180,708 595,702 534,082
Research and development expense 93,909 85,655 274,659 254,980
Selling, general and administrative expenses 36,677 34,285 112,107 106,594
Operating income 65,835 60,768 208,936 172,508
Marine Segment [Member]        
Segment Reporting Information [Line Items]        
Net sales 309,878 267,005 1,006,262 885,704
Cost of goods sold 111,436 118,767 401,481 389,195
Gross profit 198,442 148,238 604,781 496,509
Research and development expense 50,872 47,986 150,912 138,894
Selling, general and administrative expenses 53,576 50,856 169,271 158,434
Operating income 93,994 49,396 284,598 199,181
Auto OEM Segment [Member]        
Segment Reporting Information [Line Items]        
Net sales 131,912 164,840 474,603 504,324
Cost of goods sold 110,194 139,897 383,701 421,246
Gross profit 21,718 24,943 90,902 83,078
Research and development expense 22,174 29,134 69,982 80,472
Selling, general and administrative expenses 11,402 12,504 36,342 37,718
Operating income $ (11,858) $ (16,695) $ (15,422) $ (35,112)