v3.26.1
Segment Information and Geographic Data - Schedule of Net Sales (Revenue), Gross Profit, and Operating Income (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 27, 2026
Jun. 28, 2025
Jun. 27, 2026
Jun. 28, 2025
Segment Reporting Information [Line Items]        
Net sales $ 2,022,092 $ 1,814,564 $ 3,775,582 $ 3,349,663
Cost of goods sold 760,070 747,552 1,471,272 1,398,106
Gross profit 1,262,022 1,067,012 2,304,310 1,951,557
Research and development expense 303,940 276,663 599,758 544,783
Selling, general and administrative expenses 342,574 318,054 657,379 601,655
Operating income (loss) 615,508 472,295 1,047,173 805,119
Fitness Segment [Member]        
Segment Reporting Information [Line Items]        
Net sales 756,823 605,425 1,303,646 990,147
Cost of goods sold 276,100 240,755 484,400 405,334
Gross profit 480,723 364,670 819,246 584,813
Research and development expense 64,361 52,696 126,666 103,153
Selling, general and administrative expenses 139,323 114,344 257,921 206,316
Operating income (loss) 277,039 197,630 434,659 275,344
Outdoor Segment [Member]        
Segment Reporting Information [Line Items]        
Net sales 482,740 490,357 900,270 928,853
Cost of goods sold 150,421 165,928 290,009 321,889
Gross profit 332,319 324,429 610,261 606,964
Research and development expense 74,198 66,997 144,494 130,060
Selling, general and administrative expenses 94,538 99,551 183,394 190,236
Operating income (loss) 163,583 157,881 282,373 286,668
Aviation Segment [Member]        
Segment Reporting Information [Line Items]        
Net sales 268,749 249,366 532,590 472,481
Cost of goods sold 66,778 63,894 133,311 119,107
Gross profit 201,971 185,472 399,279 353,374
Research and development expense 91,290 85,126 180,750 169,324
Selling, general and administrative expenses 38,515 36,963 75,429 72,311
Operating income (loss) 72,166 63,383 143,100 111,739
Marine Segment [Member]        
Segment Reporting Information [Line Items]        
Net sales 341,369 299,262 696,385 618,699
Cost of goods sold 132,405 134,924 290,045 270,428
Gross profit 208,964 164,338 406,340 348,271
Research and development expense 51,089 46,920 100,040 90,907
Selling, general and administrative expenses 58,027 54,497 115,694 107,579
Operating income (loss) 99,848 62,921 190,606 149,785
Auto OEM Segment [Member]        
Segment Reporting Information [Line Items]        
Net sales 172,411 170,154 342,691 339,483
Cost of goods sold 134,366 142,051 273,507 281,348
Gross profit 38,045 28,103 69,184 58,135
Research and development expense 23,002 24,924 47,808 51,339
Selling, general and administrative expenses 12,171 12,699 24,941 25,213
Operating income (loss) $ 2,872 $ (9,520) $ (3,565) $ (18,417)