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Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 30, 2017	Sep. 30, 2017	Jul. 01, 2017	Apr. 01, 2017	Dec. 31, 2016	Sep. 24, 2016	Jun. 25, 2016	Mar. 26, 2016	Dec. 30, 2017		Dec. 31, 2016		Dec. 26, 2015
Net sales	$ 888,496	$ 743,077	$ 816,885	$ 638,546	$ 860,767	$ 722,250	$ 811,609	$ 624,040	$ 3,087,004	[1]	$ 3,018,665	[1]	$ 2,820,270	[1]
Gross profit	$ 499,518	$ 433,665	$ 477,858	$ 372,123	$ 470,782	$ 405,980	$ 462,958	$ 339,850	1,783,164		1,679,570		1,538,704
Operating income									668,860		623,909		549,581
Outdoor [Member]
Net sales									698,867		546,326		411,184
Gross profit									448,410		340,504		254,878
Operating income									249,867		184,035		139,070
Fitness [Member]
Net sales									762,194		818,486		661,599
Gross profit									422,636		437,205		366,139
Operating income									146,765		160,596		134,574
Marine [Member]
Net sales									374,001		331,947		286,778
Gross profit									212,592		183,709		158,493
Operating income									50,328		52,167		28,611
Auto [Member]
Net sales									750,583		882,558		1,062,091
Gross profit									327,921		388,747		464,480
Operating income									67,967		102,347		136,069
Aviation [Member]
Net sales									501,359		439,348		398,618
Gross profit									371,605		329,405		294,714
Operating income									$ 153,933		$ 124,764		$ 111,257
[1] The U.S. is the only country which constitutes greater than 10% of net sales to external customers.

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- Definition

Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1,2)
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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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