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Document And Entity Information
 3 Months Ended
Mar. 31, 2015
Apr. 22, 2015
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Mar. 31, 2015  
Document Fiscal Year Focus 2015  
Document Fiscal Period Focus Q1  
Trading Symbol WNC  
Entity Common Stock, Shares Outstanding   67,916,535dei_EntityCommonStockSharesOutstanding
Entity Registrant Name WABASH NATIONAL CORP /DE  
Entity Central Index Key 0000879526  
Current Fiscal Year End Date --12-31  
Entity Filer Category Accelerated Filer