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May also provide for estimated product returns or price concessions pertaining to product cost.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6(a)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 6 -Subparagraph a -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 43 -Section A -Paragraph 9 -Chapter 3 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.BB) -URI http://asc.fasb.org/extlink&oid=6386940&loc=d3e100047-122729 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e24092-122690 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 35 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6386567&loc=d3e3927-108312 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 43 -Paragraph 14 -Chapter 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 43 -Paragraph 8, 9, 14 -Chapter 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 false2Excess and obsolete reserve3false 2wair_InventoryValuationReservesRecordedwair_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse83050008305falsefalsefalse2truefalsefalse1149600011496falsefalsefalsexbrli:monetaryItemTypemonetaryRepresents the amount of excess and obsolete reserve recorded during the period.No definition available.false2Amount of excess and obsolete reserve recorded4false 2wair_MaximumManufacturerLeadTimeForCommitmentToPurchaseInventorywair_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse002 yearsfalsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:durationItemTypenaRepresents the maximum manufacturer's lead time for commitment to purchase inventory.No definition available.false0Maximum manufacturer lead time for commitment to purchase of inventory5false 2wair_InventoryScrappedSince2006wair_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse1667900016679falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryRepresent the amount of slow-moving or obsolescent inventory the Company has scrapped since 2006.No definition available.false2Scrapped inventory since 20066false 2wair_SlowMovingInventoryNotRecordedInInventoryValuationReserveswair_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse1785400017854USD$falsetruefalse2falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryRepresents the slow--moving inventory not recorded in the excess and obsolescence reserve.No definition available.false2Slow-moving inventory left unreserved7false 2wair_PeriodOverWhichUnreservedSlowMovingInventoryWillBeSoldwair_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse003 yearsfalsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:durationItemTypenaRepresents the period over which unreserved slow-moving inventory will be sold.No definition available.false0Period over which unreserved slow-moving inventory will be soldfalseExcess and Obsolescence Reserve Policy (Details) (USD $)ThousandsUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.wescoair.com/role/DisclosureExcessAndObsolescenceReservePolicyDetails27