XML 55 R45.htm IDEA: XBRL DOCUMENT
v3.19.2

RESTRUCTURING ACTIVITIES - Restructuring Activities - Restruciting Expenses and Related Costs (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2018 | Dec. 29, 2018
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | $ 7,019 |
ESS |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 5,419 |
Utility |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 1,474 |
Corporate |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 126 |
Total cost of sales |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 4,490 |
Total cost of sales | ESS |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 3,016 | $ 18,380
Total cost of sales | Utility |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 1,474 |
Total cost of sales | Corporate |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 0 |
Selling, General and Administrative Expenses |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 2,529 |
Selling, General and Administrative Expenses | ESS |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 2,403 | $ 15,651
Selling, General and Administrative Expenses | Utility |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 0 |
Selling, General and Administrative Expenses | Corporate |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 126 |
Severance | Total cost of sales |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 2,118 |
Severance | Total cost of sales | ESS |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 1,603 |
Severance | Total cost of sales | Utility |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 515 |
Severance | Total cost of sales | Corporate |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 0 |
Severance | Selling, General and Administrative Expenses |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 1,533 |
Severance | Selling, General and Administrative Expenses | ESS |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 1,533 |
Severance | Selling, General and Administrative Expenses | Utility |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 0 |
Severance | Selling, General and Administrative Expenses | Corporate |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 0 |
Other cash restructuring expenses | Total cost of sales |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 1,111 |
Other cash restructuring expenses | Total cost of sales | ESS |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 152 |
Other cash restructuring expenses | Total cost of sales | Utility |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 959 |
Other cash restructuring expenses | Total cost of sales | Corporate |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 0 |
Other cash restructuring expenses | Selling, General and Administrative Expenses |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 611 |
Other cash restructuring expenses | Selling, General and Administrative Expenses | ESS |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 485 |
Other cash restructuring expenses | Selling, General and Administrative Expenses | Utility |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 0 |
Other cash restructuring expenses | Selling, General and Administrative Expenses | Corporate |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 126 |
Asset impairments/net loss on disposals | Total cost of sales |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 1,261 |
Asset impairments/net loss on disposals | Total cost of sales | ESS |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 1,261 |
Asset impairments/net loss on disposals | Total cost of sales | Utility |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 0 |
Asset impairments/net loss on disposals | Total cost of sales | Corporate |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 0 |
Asset impairments/net loss on disposals | Selling, General and Administrative Expenses |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 385 |
Asset impairments/net loss on disposals | Selling, General and Administrative Expenses | ESS |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 385 |
Asset impairments/net loss on disposals | Selling, General and Administrative Expenses | Utility |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 0 |
Asset impairments/net loss on disposals | Selling, General and Administrative Expenses | Corporate |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | $ 0 |

X
- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.P.3) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140864-122747 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747 + Details
Name: | us-gaap_RestructuringCharges
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_RestructuringCostAndReserveLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=vmi_ESSMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=vmi_UtilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=us-gaap_CorporateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_CostOfSalesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_SellingGeneralAndAdministrativeExpensesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=us-gaap_EmployeeSeveranceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=us-gaap_OtherRestructuringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=vmi_AssetImpairmentNetLossOnDisposalsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |