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v2.4.1.9

Commitments and Contingencies - Additional Information (Detail) In Millions, unless otherwise specified | 1 Months Ended | 12 Months Ended |  |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2010 USD ($) | Dec. 31, 2014 BRL | Dec. 31, 2014 USD ($) | May 31, 2012 USD ($) | Nov. 22, 2011 Court-Imposed Interest, Fees or Inflation Adjustments Maximum USD ($) | Nov. 22, 2011 Court-Imposed Interest, Fees or Inflation Adjustments Maximum BRL | Dec. 31, 2014 Arizona Department Of Environmental Quality USD ($) | Dec. 31, 2014 Standby Letters Of Credit USD ($)
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Damages asserted by BK |  | 20.8 us-gaap_LossContingencyDamagesSoughtValue |  |  | $ 58.0 us-gaap_LossContingencyDamagesSoughtValue / us-gaap_LossContingenciesByNatureOfContingencyAxis = wnc_OtherAdjustmentsMember / us-gaap_RangeAxis = us-gaap_MaximumMember |  | $ 0.2 us-gaap_LossContingencyDamagesSoughtValue / us-gaap_LossContingenciesByNatureOfContingencyAxis = wnc_ArizonaDepartmentOfEnvironmentalQualityMember |
Total ordered damages granted to Bk |  |  |  |  | 10.0 us-gaap_LossContingencyDamagesAwardedValue / us-gaap_LossContingenciesByNatureOfContingencyAxis = wnc_OtherAdjustmentsMember / us-gaap_RangeAxis = us-gaap_MaximumMember | 26.7 us-gaap_LossContingencyDamagesAwardedValue / us-gaap_LossContingenciesByNatureOfContingencyAxis = wnc_OtherAdjustmentsMember / us-gaap_RangeAxis = us-gaap_MaximumMember |  |
Business combination, recognized identifiable assets acquired and liabilities assumed, contingent liability |  |  |  | 2.9 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedContingentLiability |  |  |  |
Amount of remediation plan for the RID portion of the Superfund Site approved by ADEQ | 100 wnc_EnvironmentalRemediationCostAmountApproved |  |  |  |  |  |  |
Loss Contingency, Estimate of Possible Loss |  |  |  |  |  |  | 0.6 us-gaap_LossContingencyEstimateOfPossibleLoss / us-gaap_LossContingenciesByNatureOfContingencyAxis = wnc_ArizonaDepartmentOfEnvironmentalQualityMember |
Letters of Credit Outstanding, Amount |  |  |  |  |  |  |  | 6.2 us-gaap_LettersOfCreditOutstandingAmount / us-gaap_LossContingenciesByNatureOfContingencyAxis = us-gaap_StandbyLettersOfCreditMember
Purchase Obligation |  |  | $ 71.3 us-gaap_PurchaseObligation |  |  |  |  |

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- Definition The amount of liability arising from an inherited contingency (as defined) which has been recognized as of the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=35744172&loc=d3e2207-128464 + Details
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- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
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- Definition Amount of damages awarded to the plaintiff in the legal matter. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349 + Details
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- Definition The value (monetary amount) of the award the plaintiff seeks in the legal matter. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349 + Details
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- Definition Reflects the estimated amount of loss from the specified contingency as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349 + Details
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- Definition Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier. + References No definition available. + Details
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- Definition Refers to environmenal remediation cost amount approved during the period. + References No definition available. + Details
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