GOODWILL AND INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Mar. 28, 2020	Jun. 27, 2020	Dec. 28, 2019
Finite Lived And Indefinite Lived Intangible Assets By Major Class Line Items
Accumulated Amortization		$ (39,965)	$ (37,015)
Gross carrying amount		131,432	127,865
Net carrying amount		91,467	90,850
Goodwill	$ 54,300	54,293	54,293
Trademarks
Finite Lived And Indefinite Lived Intangible Assets By Major Class Line Items
Carrying amount, indefinite-lived		12,464	9,245
Gross carrying amount, finite-lived		18,610	19,872
Accumulated Amortization		(5,144)	(4,307)
Net carrying amount, finite-lived		13,466	15,565
Customer relationships
Finite Lived And Indefinite Lived Intangible Assets By Major Class Line Items
Gross carrying amount, finite-lived		42,205	42,205
Accumulated Amortization		(30,865)	(28,947)
Net carrying amount, finite-lived		$ 11,340	13,258
Useful Life	11 years	11 years
Patents
Finite Lived And Indefinite Lived Intangible Assets By Major Class Line Items
Gross carrying amount, finite-lived		$ 8,871	7,407
Accumulated Amortization		(882)	(719)
Net carrying amount, finite-lived		7,989	6,688
Non-compete agreements
Finite Lived And Indefinite Lived Intangible Assets By Major Class Line Items
Gross carrying amount, finite-lived		2,815	2,815
Accumulated Amortization		$ (2,815)	(2,815)
Useful Life	5 years	5 years
Other intangibles
Finite Lived And Indefinite Lived Intangible Assets By Major Class Line Items
Gross carrying amount, finite-lived		$ 1,042	1,041
Accumulated Amortization		(259)	(227)
Net carrying amount, finite-lived		$ 783	814
Useful Life	15 years	15 years
Tradename
Finite Lived And Indefinite Lived Intangible Assets By Major Class Line Items
Carrying amount, indefinite-lived		$ 31,363	31,363
Trade dress
Finite Lived And Indefinite Lived Intangible Assets By Major Class Line Items
Carrying amount, indefinite-lived		$ 14,062	$ 13,917
Minimum | Trademarks
Finite Lived And Indefinite Lived Intangible Assets By Major Class Line Items
Useful Life	6 years	6 years
Minimum | Patents
Finite Lived And Indefinite Lived Intangible Assets By Major Class Line Items
Useful Life	4 years	4 years
Maximum | Trademarks
Finite Lived And Indefinite Lived Intangible Assets By Major Class Line Items
Useful Life	30 years	30 years
Maximum | Patents
Finite Lived And Indefinite Lived Intangible Assets By Major Class Line Items
Useful Life	25 years	25 years