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v3.20.1

REVENUE RECOGNITION (Details) | 3 Months Ended
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Mar. 31, 2020 performance_obligation
Revenue from Contract with Customer [Abstract] |
Number of separate and distinct performance obligations | 3

X
- References No definition available. + Details
Name: | us-gaap_RevenueFromContractWithCustomerAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number Of Distinct Performance Obligations + References No definition available. + Details
Name: | wnc_NumberOfDistinctPerformanceObligations
Namespace Prefix: | wnc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration