ACQUISITION (Details) - USD ($) $ in Thousands		3 Months Ended
	Apr. 01, 2020	Sep. 26, 2020	Mar. 28, 2020
Business Acquisition [Line Items]
Goodwill		$ 214,594	$ 210,652
Acquisition related costs incurred		200
Enicor
Business Acquisition [Line Items]
Consideration transferred	$ 20,500
Upfront payment	16,600
Contingent consideration	3,900
Contingent consideration, maximum exposure	$ 4,500
Inventory		634
Other current assets		685
Property, plant and equipment		289
Intangible assets		14,090
Goodwill		8,153
Total assets acquired		23,851
Other current liabilities		289
Contingent consideration (current)		504
Contingent consideration (non-current)		3,416
Deferred tax liability		3,036
Total liabilities assumed		7,245
Net assets acquired		16,606
Acquired intangibles		$ 14,090
Weighted-Average Amortization Period		10 years
Enicor | Technology-Based Intangible Assets
Business Acquisition [Line Items]
Acquired intangibles		$ 13,441
Weighted-Average Amortization Period		10 years
Enicor | Customer Relationships
Business Acquisition [Line Items]
Acquired intangibles		$ 347
Weighted-Average Amortization Period		10 years
Enicor | Trademarks
Business Acquisition [Line Items]
Acquired intangibles		$ 302
Weighted-Average Amortization Period		10 years