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v2.4.1.9

Reportable Segment Information (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Net sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total net sales | $ 527,477 us-gaap_SalesRevenueNet | $ 491,697 us-gaap_SalesRevenueNet | $ 486,021 us-gaap_SalesRevenueNet | $ 358,120 us-gaap_SalesRevenueNet | $ 458,354 us-gaap_SalesRevenueNet | $ 439,977 us-gaap_SalesRevenueNet | $ 413,126 us-gaap_SalesRevenueNet | $ 324,229 us-gaap_SalesRevenueNet | $ 415,847 us-gaap_SalesRevenueNet | $ 405,917 us-gaap_SalesRevenueNet | $ 362,408 us-gaap_SalesRevenueNet | $ 277,682 us-gaap_SalesRevenueNet | $ 1,863,315 us-gaap_SalesRevenueNet | $ 1,635,686 us-gaap_SalesRevenueNet | $ 1,461,854 us-gaap_SalesRevenueNet
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  |  |  | 38,829 us-gaap_DepreciationAndAmortization | 38,336 us-gaap_DepreciationAndAmortization | 25,565 us-gaap_DepreciationAndAmortization
Income (Loss) from operations |  |  |  |  |  |  |  |  |  |  |  |  | 122,386 us-gaap_OperatingIncomeLoss | 103,191 us-gaap_OperatingIncomeLoss | 70,484 us-gaap_OperatingIncomeLoss
Reconciling items to net income |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense |  |  |  |  |  |  |  |  |  |  |  |  | (22,165)us-gaap_InterestExpense | (26,308)us-gaap_InterestExpense | (21,724)us-gaap_InterestExpense
Other, net |  |  |  |  |  |  |  |  |  |  |  |  | (1,759)us-gaap_OtherNonoperatingIncomeExpense | 740 us-gaap_OtherNonoperatingIncomeExpense | (97)us-gaap_OtherNonoperatingIncomeExpense
Income tax expense |  |  |  |  |  |  |  |  |  |  |  |  | 37,532 us-gaap_IncomeTaxExpenseBenefit | 31,094 us-gaap_IncomeTaxExpenseBenefit | (56,968)us-gaap_IncomeTaxExpenseBenefit
Net income |  |  |  |  |  |  |  |  |  |  |  |  | 98,462 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | 77,623 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | 48,663 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
External customers |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total net sales |  |  |  |  |  |  |  |  |  |  |  |  | 1,863,315 us-gaap_SalesRevenueNet / us-gaap_MajorCustomersAxis = wnc_ExternalCustomersMember | 1,635,686 us-gaap_SalesRevenueNet / us-gaap_MajorCustomersAxis = wnc_ExternalCustomersMember | 1,461,854 us-gaap_SalesRevenueNet / us-gaap_MajorCustomersAxis = wnc_ExternalCustomersMember
Intersegment sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total net sales |  |  |  |  |  |  |  |  |  |  |  |  | 0 us-gaap_SalesRevenueNet / us-gaap_MajorCustomersAxis = wnc_IntersegmentSalesMember | 0 us-gaap_SalesRevenueNet / us-gaap_MajorCustomersAxis = wnc_IntersegmentSalesMember | 0 us-gaap_SalesRevenueNet / us-gaap_MajorCustomersAxis = wnc_IntersegmentSalesMember
Corporate and Eliminations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total net sales |  |  |  |  |  |  |  |  |  |  |  |  | (87,167)us-gaap_SalesRevenueNet / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | (86,929)us-gaap_SalesRevenueNet / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | (81,639)us-gaap_SalesRevenueNet / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  |  |  | 1,630 us-gaap_DepreciationAndAmortization / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | 1,860 us-gaap_DepreciationAndAmortization / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | 2,812 us-gaap_DepreciationAndAmortization / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember
Income (Loss) from operations |  |  |  |  |  |  |  |  |  |  |  |  | (17,419)us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | (16,363)us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | (29,253)us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember
Corporate and Eliminations | External customers |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total net sales |  |  |  |  |  |  |  |  |  |  |  |  | 0 us-gaap_SalesRevenueNet / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember / us-gaap_MajorCustomersAxis = wnc_ExternalCustomersMember | 0 us-gaap_SalesRevenueNet / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember / us-gaap_MajorCustomersAxis = wnc_ExternalCustomersMember | 0 us-gaap_SalesRevenueNet / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember / us-gaap_MajorCustomersAxis = wnc_ExternalCustomersMember
Corporate and Eliminations | Intersegment sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total net sales |  |  |  |  |  |  |  |  |  |  |  |  | (87,167)us-gaap_SalesRevenueNet / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember / us-gaap_MajorCustomersAxis = wnc_IntersegmentSalesMember | (86,929)us-gaap_SalesRevenueNet / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember / us-gaap_MajorCustomersAxis = wnc_IntersegmentSalesMember | (81,639)us-gaap_SalesRevenueNet / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember / us-gaap_MajorCustomersAxis = wnc_IntersegmentSalesMember
Commercial Trailer Products |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total net sales |  |  |  |  |  |  |  |  |  |  |  |  | 1,294,164 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = wnc_CommercialVehicleSegmentMember | 1,082,454 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = wnc_CommercialVehicleSegmentMember | 1,064,591 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = wnc_CommercialVehicleSegmentMember
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  |  |  | 11,332 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = wnc_CommercialVehicleSegmentMember | 11,127 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = wnc_CommercialVehicleSegmentMember | 11,658 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = wnc_CommercialVehicleSegmentMember
Income (Loss) from operations |  |  |  |  |  |  |  |  |  |  |  |  | 81,141 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = wnc_CommercialVehicleSegmentMember | 57,543 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = wnc_CommercialVehicleSegmentMember | 52,242 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = wnc_CommercialVehicleSegmentMember
Commercial Trailer Products | External customers |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total net sales |  |  |  |  |  |  |  |  |  |  |  |  | 1,221,040 us-gaap_SalesRevenueNet / us-gaap_MajorCustomersAxis = wnc_ExternalCustomersMember / us-gaap_StatementBusinessSegmentsAxis = wnc_CommercialVehicleSegmentMember | 1,010,736 us-gaap_SalesRevenueNet / us-gaap_MajorCustomersAxis = wnc_ExternalCustomersMember / us-gaap_StatementBusinessSegmentsAxis = wnc_CommercialVehicleSegmentMember | 995,164 us-gaap_SalesRevenueNet / us-gaap_MajorCustomersAxis = wnc_ExternalCustomersMember / us-gaap_StatementBusinessSegmentsAxis = wnc_CommercialVehicleSegmentMember
Commercial Trailer Products | Intersegment sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total net sales |  |  |  |  |  |  |  |  |  |  |  |  | 73,124 us-gaap_SalesRevenueNet / us-gaap_MajorCustomersAxis = wnc_IntersegmentSalesMember / us-gaap_StatementBusinessSegmentsAxis = wnc_CommercialVehicleSegmentMember | 71,718 us-gaap_SalesRevenueNet / us-gaap_MajorCustomersAxis = wnc_IntersegmentSalesMember / us-gaap_StatementBusinessSegmentsAxis = wnc_CommercialVehicleSegmentMember | 69,427 us-gaap_SalesRevenueNet / us-gaap_MajorCustomersAxis = wnc_IntersegmentSalesMember / us-gaap_StatementBusinessSegmentsAxis = wnc_CommercialVehicleSegmentMember
Diversified Products |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total net sales |  |  |  |  |  |  |  |  |  |  |  |  | 466,238 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = wnc_OtherProductsMember | 458,675 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = wnc_OtherProductsMember | 321,257 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = wnc_OtherProductsMember
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  |  |  | 23,806 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = wnc_OtherProductsMember | 23,320 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = wnc_OtherProductsMember | 10,385 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = wnc_OtherProductsMember
Income (Loss) from operations |  |  |  |  |  |  |  |  |  |  |  |  | 54,879 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = wnc_OtherProductsMember | 59,126 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = wnc_OtherProductsMember | 44,573 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = wnc_OtherProductsMember
Diversified Products | External customers |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total net sales |  |  |  |  |  |  |  |  |  |  |  |  | 453,160 us-gaap_SalesRevenueNet / us-gaap_MajorCustomersAxis = wnc_ExternalCustomersMember / us-gaap_StatementBusinessSegmentsAxis = wnc_OtherProductsMember | 444,804 us-gaap_SalesRevenueNet / us-gaap_MajorCustomersAxis = wnc_ExternalCustomersMember / us-gaap_StatementBusinessSegmentsAxis = wnc_OtherProductsMember | 309,680 us-gaap_SalesRevenueNet / us-gaap_MajorCustomersAxis = wnc_ExternalCustomersMember / us-gaap_StatementBusinessSegmentsAxis = wnc_OtherProductsMember
Diversified Products | Intersegment sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total net sales |  |  |  |  |  |  |  |  |  |  |  |  | 13,078 us-gaap_SalesRevenueNet / us-gaap_MajorCustomersAxis = wnc_IntersegmentSalesMember / us-gaap_StatementBusinessSegmentsAxis = wnc_OtherProductsMember | 13,871 us-gaap_SalesRevenueNet / us-gaap_MajorCustomersAxis = wnc_IntersegmentSalesMember / us-gaap_StatementBusinessSegmentsAxis = wnc_OtherProductsMember | 11,577 us-gaap_SalesRevenueNet / us-gaap_MajorCustomersAxis = wnc_IntersegmentSalesMember / us-gaap_StatementBusinessSegmentsAxis = wnc_OtherProductsMember
Retail |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total net sales |  |  |  |  |  |  |  |  |  |  |  |  | 190,080 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = wnc_RetailMember | 181,486 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = wnc_RetailMember | 157,645 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = wnc_RetailMember
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  |  |  | 2,061 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = wnc_RetailMember | 2,029 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = wnc_RetailMember | 710 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = wnc_RetailMember
Income (Loss) from operations |  |  |  |  |  |  |  |  |  |  |  |  | 3,785 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = wnc_RetailMember | 2,885 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = wnc_RetailMember | 2,922 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = wnc_RetailMember
Retail | External customers |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total net sales |  |  |  |  |  |  |  |  |  |  |  |  | 189,115 us-gaap_SalesRevenueNet / us-gaap_MajorCustomersAxis = wnc_ExternalCustomersMember / us-gaap_StatementBusinessSegmentsAxis = wnc_RetailMember | 180,146 us-gaap_SalesRevenueNet / us-gaap_MajorCustomersAxis = wnc_ExternalCustomersMember / us-gaap_StatementBusinessSegmentsAxis = wnc_RetailMember | 157,010 us-gaap_SalesRevenueNet / us-gaap_MajorCustomersAxis = wnc_ExternalCustomersMember / us-gaap_StatementBusinessSegmentsAxis = wnc_RetailMember
Retail | Intersegment sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total net sales |  |  |  |  |  |  |  |  |  |  |  |  | $ 965 us-gaap_SalesRevenueNet / us-gaap_MajorCustomersAxis = wnc_IntersegmentSalesMember / us-gaap_StatementBusinessSegmentsAxis = wnc_RetailMember | $ 1,340 us-gaap_SalesRevenueNet / us-gaap_MajorCustomersAxis = wnc_IntersegmentSalesMember / us-gaap_StatementBusinessSegmentsAxis = wnc_RetailMember | $ 635 us-gaap_SalesRevenueNet / us-gaap_MajorCustomersAxis = wnc_IntersegmentSalesMember / us-gaap_StatementBusinessSegmentsAxis = wnc_RetailMember

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