DIVESTITURES - Pre-tax loss (Details) - Valmont SM, Offshore Wind Business [Member] - USD ($) $ in Thousands	12 Months Ended
Dec. 30, 2023	Dec. 31, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Pre-tax loss from divestitures, before recognition of currency translation loss	$ 12,123	$ 12,123
Recognition of cumulative currency translation loss and hedges (out of OCI)	(21,150)	$ (21,150)
Net pre-tax loss from divestiture of offshore wind business	$ 33,273

Amount before tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation.

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