XML 47 R39.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Stock-Based Compensation - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | 9 Months Ended
--- | ---
Sep. 30, 2013
Compensation costs related to stock options, nonvested restricted stock, stock appreciation rights and performance units not yet recognized | $ 9.0
Recognition period | 2016

X
- Definition Unrecognized cost of unvested share-based compensation awards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Employee Service Share Based Compensation Related To Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition. + References No definition available. + Details
Name: | wnc_EmployeeServiceShareBasedCompensationRelatedToNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition
Namespace Prefix: | wnc_
Data Type: | xbrli:gYearItemType
Balance Type: | na
Period Type: | duration