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Quarterly Results of Operations (unaudited) (Details Textual) (USD $)
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3 Months Ended | 12 Months Ended | ||||||||||
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Mar. 31, 2015
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Dec. 31, 2014
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Sep. 30, 2014
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Jun. 30, 2014
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Mar. 31, 2014
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Dec. 31, 2013
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Sep. 30, 2013
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Jun. 30, 2013
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Mar. 31, 2015
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Mar. 31, 2014
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Mar. 31, 2013
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Mar. 02, 2014
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| Effect of Fourth Quarter Events [Line Items] | ||||||||||||
| Goodwill impairment | $ 20,547,000us-gaap_GoodwillImpairmentLoss | $ 10,555,000us-gaap_GoodwillImpairmentLoss | $ 31,102,000us-gaap_GoodwillImpairmentLoss | $ 2,884,000us-gaap_GoodwillImpairmentLoss | ||||||||
| Restructuring | 3,188,000us-gaap_RestructuringCharges | (2,000)us-gaap_RestructuringCharges | 57,000us-gaap_RestructuringCharges | 62,000us-gaap_RestructuringCharges | 38,000us-gaap_RestructuringCharges | 169,000us-gaap_RestructuringCharges | 66,000us-gaap_RestructuringCharges | 3,243,000us-gaap_RestructuringCharges | 335,000us-gaap_RestructuringCharges | 149,000us-gaap_RestructuringCharges | ||
| termination expense of former CEO | 2,100,000wstl_TerminationexpenseofformerCEO | |||||||||||
| Revenue | 84,127,000us-gaap_SalesRevenueNet | 102,073,000us-gaap_SalesRevenueNet | 38,808,000us-gaap_SalesRevenueNet | |||||||||
| Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent | 8,800,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilitiesNoncurrent | 8,800,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilitiesNoncurrent | ||||||||||
| CSI [Member] | ||||||||||||
| Effect of Fourth Quarter Events [Line Items] | ||||||||||||
| Revenue |
3,700,000us-gaap_SalesRevenueNet / us-gaap_BusinessAcquisitionAxis = wstl_CSIMember |
29,500,000us-gaap_SalesRevenueNet / us-gaap_BusinessAcquisitionAxis = wstl_CSIMember |
3,700,000us-gaap_SalesRevenueNet / us-gaap_BusinessAcquisitionAxis = wstl_CSIMember |
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| Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent |
$ 6,293,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilitiesNoncurrent / us-gaap_BusinessAcquisitionAxis = wstl_CSIMember |
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| X | ||||||||||
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- Definition
Amount of deferred tax liability attributable to taxable temporary differences due after one year or the normal operating cycle, if longer, assumed at the acquisition date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
termination expense of former CEO including severance and accelerated stock-based compensation No definition available.
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| X | ||||||||||
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- Details
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