Document And Entity Information - shares	6 Months Ended
	Jun. 30, 2015	Jul. 23, 2015
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q2
Entity Registrant Name	WABASH NATIONAL CORP /DE
Entity Central Index Key	0000879526
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Trading Symbol	WNC
Entity Common Stock, Shares Outstanding		66,583,943