Cover Page - shares	6 Months Ended
	Jun. 30, 2020	Jul. 24, 2020
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2020
Document Transition Report	false
Entity File Number	001-10883
Entity Registrant Name	WABASH NATIONAL CORPORATION
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	52-1375208
Entity Address, Address Line One	1000 Sagamore Parkway South
Entity Address, City or Town	Lafayette
Entity Address, State or Province	IN
Entity Address, Postal Zip Code	47905
City Area Code	765
Local Phone Number	771-5300
Title of 12(b) Security	Common Stock, $0.01 par value
Trading Symbol	WNC
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)		52,912,988
Amendment Flag	false
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q2
Entity Central Index Key	0000879526
Current Fiscal Year End Date	--12-31