Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies (Details Textual)

v2.4.1.9
Commitments and Contingencies (Details Textual) (USD $)
9 Months Ended 12 Months Ended
Dec. 31, 2014
Mar. 31, 2014
Loss Contingencies [Line Items]    
Increase (decrease) in future obligations and commitments $ 8,400,000wstl_IncreaseDecreaseInFutureObligationsAndCommitments  
Future obligations and commitments 15,251,000us-gaap_ContractualObligation 23,700,000us-gaap_ContractualObligation
Payments for Previous Acquisition 1,104,000us-gaap_PaymentsForPreviousAcquisition  
Total contingent reserves related to intellectual property and indemnification claims 700,000us-gaap_LossContingencyAccrualAtCarryingValue 700,000us-gaap_LossContingencyAccrualAtCarryingValue
Maximum ANTONE earn-out that could be paid before offsets 3,500,000us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh  
Fair value of contingent consideration liability after offset of working capital adjustment and indemnification claim 1,538,000us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue 2,641,000us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue
Arkadin [Member]    
Loss Contingencies [Line Items]    
Escrow Deposit Released   $ 1,100,000wstl_EscrowDepositReleased
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= wstl_ArkadinMemberMember