Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies (Details)

v2.4.1.9
Commitments and Contingencies (Details) (USD $)
 12 Months Ended
Mar. 31, 2015
Long-term Purchase Commitment [Line Items]  
Unrecorded Unconditional Purchase Obligation, Due in Next Twelve Months $ 9,030,000us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary [1]
Unrecorded Unconditional Purchase Obligation 9,030,000us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount [1]
Operating Leases, Future Minimum Payments Due, Next Twelve Months 2,638,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent
Operating Leases, Future Minimum Payments, Due in Two Years 2,635,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears
Operating Leases, Future Minimum Payments, Due in Three Years 1,023,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears
Operating Leases, Future Minimum Payments, Due in Four Years 189,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears
Operating Leases, Future Minimum Payments, Due in Five Years 58,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears
Operating Leases, Future Minimum Payments Due 6,543,000us-gaap_OperatingLeasesFutureMinimumPaymentsDue
Other Commitment, Due in Next Twelve Months 1,184,000us-gaap_OtherCommitmentDueInNextTwelveMonths
Other Commitment, Due in Second Year 400,000us-gaap_OtherCommitmentDueInSecondYear
Other Commitment 1,584,000us-gaap_OtherCommitment
Contractual Obligation, Due in Next Twelve Months 12,852,000us-gaap_ContractualObligationDueInNextTwelveMonths [1]
Contractual Obligation, Due in Second Year 3,035,000us-gaap_ContractualObligationDueInSecondYear
Contractual Obligation, Due in Third Year 1,023,000us-gaap_ContractualObligationDueInThirdYear
Purchase Obligation, Due in Fourth Year 189,000us-gaap_PurchaseObligationDueInFourthYear
Purchase Obligation, Due in Fifth Year 58,000us-gaap_PurchaseObligationDueInFifthYear
Purchase Obligation 17,157,000us-gaap_PurchaseObligation [1]
Losses on Firm Purchase Commitments $ 590,000wstl_LossesonFirmPurchaseCommitments
[1] For the year ended March 31, 2015, the Company recorded a net loss on firm purchase commitments of $590,000.