Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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GOODWILL AND INTANGIBLE ASSETS (Details 5) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 29, 2018	Dec. 29, 2018	Dec. 30, 2017
Goodwill [Line Items]
Goodwill impairment	$ 14,355	$ 14,355	$ 34,892
Engineered Support Structures
Goodwill [Line Items]
Goodwill impairment		0	18,670
Coatings
Goodwill [Line Items]
Goodwill impairment		$ 0	$ 16,222
Webforge
Goodwill [Line Items]
Impairment of intangible assets	$ 1,425