GOODWILL AND INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 28, 2020	Dec. 28, 2019
Finite Lived And Indefinite Lived Intangible Assets By Major Class Line Items
Accumulated Amortization	$ (38,489)	$ (37,015)
Gross carrying amount	129,871	127,865
Net carrying amount	91,382	90,850
Goodwill	54,293	54,293
Trademarks
Finite Lived And Indefinite Lived Intangible Assets By Major Class Line Items
Carrying amount, indefinite-lived	11,832	9,245
Gross carrying amount, finite-lived	18,420	19,872
Accumulated Amortization	(4,729)	(4,307)
Net carrying amount, finite-lived	13,691	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	(29,906)	(28,947)
Net carrying amount, finite-lived	$ 12,299	$ 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	$ 8,288	$ 7,407
Accumulated Amortization	(796)	(719)
Net carrying amount, finite-lived	7,492	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	$ 1,041	$ 1,041
Accumulated Amortization	(243)	(227)
Net carrying amount, finite-lived	$ 798	$ 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	$ 13,907	$ 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