XML 29 R36.htm IDEA: XBRL DOCUMENT
v2.4.0.6

GUARANTOR/NON-GUARANTOR FINANCIAL INFORMATION (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 30, 2013
Long-term debt: |
Parent company's percentage ownership of Guarantors | 100.00%
6.625% senior unsecured notes due in April 2020 |
Long-term debt: |
Face amount of debt issued to finance acquisition | $ 450,000
Interest rate on notes (as a percent) | 6.625%

X
- Definition Increase of additional borrowings on existing and new debt instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(f)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph f -Article 4 + Details
Name: | us-gaap_DebtInstrumentIncreaseAdditionalBorrowings
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Interest rate stated in the contractual debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The parent's direct and indirect ownership percentage of the subsidiaries that are guarantors of the entity's debt. + References No definition available. + Details
Name: | vmi_SubsidiaryGuarantorsPercentageOwned
Namespace Prefix: | vmi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant