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Contingencies (Details) (USD $)
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1 Months Ended |
3 Months Ended |
9 Months Ended |
12 Months Ended |
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Nov. 30, 2012
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Jun. 30, 2004
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Apr. 30, 2015
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Apr. 30, 2014
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Apr. 30, 2015
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Apr. 30, 2014
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Jul. 31, 2014
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Jun. 20, 2014
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| Contingencies (Details) [Line Items] |
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| Gain Contingency, Patents Allegedly Infringed upon, Number |
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6us-gaap_GainContingencyPatentsAllegedlyInfringedUponNumber
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| Number of Licensee Patents |
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4enz_NumberOfLicenseePatents
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4enz_NumberOfLicenseePatents
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| Gain Contingency, Patents Found Not Infringed upon, Number |
1us-gaap_GainContingencyPatentsFoundNotInfringedUponNumber
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| Gain Contingencies Prejudgement Interest |
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$ 12,500,000enz_GainContingenciesPrejudgementInterest
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| Gain (Loss) Related to Litigation Settlement |
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170,000us-gaap_GainLossRelatedToLitigationSettlement
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3,100,000us-gaap_GainLossRelatedToLitigationSettlement
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170,000us-gaap_GainLossRelatedToLitigationSettlement
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3,100,000us-gaap_GainLossRelatedToLitigationSettlement
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| Indemnification Agreement [Member] |
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| Contingencies (Details) [Line Items] |
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| Gain Contingency, Unrecorded Amount |
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48,500,000us-gaap_GainContingencyUnrecordedAmount
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= us-gaap_IndemnificationGuaranteeMember
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48,500,000us-gaap_GainContingencyUnrecordedAmount
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= us-gaap_IndemnificationGuaranteeMember
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| Minimum [Member] | Subpoena [Member] |
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| Contingencies (Details) [Line Items] |
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| Litigation Settlement Period |
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2004
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| Amount of Additional Capital Receipt Condition for Litigation Settlement |
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10,000,000enz_AmountOfAdditionalCapitalReceiptConditionForLitigationSettlement
/ us-gaap_LitigationCaseAxis
= enz_SubpoenaMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
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| Maximum [Member] | Subpoena [Member] |
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| Contingencies (Details) [Line Items] |
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| Litigation Settlement Period |
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2014
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| Subpoena [Member] |
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| Contingencies (Details) [Line Items] |
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| Investigation Period |
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The time period initially covered by the investigation was from 2004 through 2011
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| Estimated Litigation Settlement Amount |
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2,000,000enz_EstimatedLitigationSettlementAmount
/ us-gaap_LitigationCaseAxis
= enz_SubpoenaMember
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| Period Over Which Settlement Amount Has to Be Paid |
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5 years
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| Estimated Litigation Liability, Current |
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400,000us-gaap_LitigationReserveCurrent
/ us-gaap_LitigationCaseAxis
= enz_SubpoenaMember
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400,000us-gaap_LitigationReserveCurrent
/ us-gaap_LitigationCaseAxis
= enz_SubpoenaMember
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| Estimated Litigation Liability, Noncurrent |
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1,200,000us-gaap_LitigationReserveNoncurrent
/ us-gaap_LitigationCaseAxis
= enz_SubpoenaMember
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1,200,000us-gaap_LitigationReserveNoncurrent
/ us-gaap_LitigationCaseAxis
= enz_SubpoenaMember
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| Additional Payment of Litigation Settlement Amount |
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1,500,000enz_AdditionalPaymentOfLitigationSettlementAmount
/ us-gaap_LitigationCaseAxis
= enz_SubpoenaMember
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| Percentage of Additional Payment of Litigation Settlement Amount over Additional Capital Receipt |
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20.00%enz_PercentageOfAdditionalPaymentOfLitigationSettlementAmountOverAdditionalCapitalReceipt
/ us-gaap_LitigationCaseAxis
= enz_SubpoenaMember
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| Perkin Elmer [Member] |
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| Contingencies (Details) [Line Items] |
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| Escrow Deposit |
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$ 7,000,000us-gaap_EscrowDeposit
/ dei_LegalEntityAxis
= enz_PerkinElmerMember
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