CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) $ in Thousands	12 Months Ended
Dec. 31, 2022 USD ($)
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Realized (gain) on offshore wind energy structures business cross currency swap, tax expense	$ 1,207

Amount, after reclassification adjustment, of tax (expense) benefit for realized gain (loss) on offshore wind energy structures business cross currency swap.

No definition available.

Name:	vmi_OtherComprehensiveIncomeLossRealizedGainLossOnDivestitureOfBusinessCrossCurrencySwapTax
Namespace Prefix:	vmi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration