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Other liabilities (Details) (USD $)
Jan. 31, 2015
Jul. 31, 2014
Other liabilities (Details) [Line Items]    
Other Liabilities, Current $ 830,000us-gaap_OtherLiabilitiesCurrent $ 790,000us-gaap_OtherLiabilitiesCurrent
Accrued Legal Settlement 1,200,000enz_AccruedLegalSettlement  
Capital Lease Obligation [Member] | Clinical Labs [Member]    
Other liabilities (Details) [Line Items]    
Capital Leases, Future Minimum Payments, Interest Included in Payments 45,000us-gaap_CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments
/ us-gaap_ShortTermDebtTypeAxis
= enz_CapitalLeaseObligationMember
/ us-gaap_StatementBusinessSegmentsAxis
= enz_ClinicalLabsMember
 
Capital Leases, Future Minimum Payments, Present Value of Net Minimum Payments 567,000us-gaap_CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments
/ us-gaap_ShortTermDebtTypeAxis
= enz_CapitalLeaseObligationMember
/ us-gaap_StatementBusinessSegmentsAxis
= enz_ClinicalLabsMember
 
Other Liabilities, Current 149,000us-gaap_OtherLiabilitiesCurrent
/ us-gaap_ShortTermDebtTypeAxis
= enz_CapitalLeaseObligationMember
/ us-gaap_StatementBusinessSegmentsAxis
= enz_ClinicalLabsMember
 
Installment Loans [Member] | Clinical Labs [Member]    
Other liabilities (Details) [Line Items]    
Capital Leases, Future Minimum Payments, Present Value of Net Minimum Payments 575,000us-gaap_CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments
/ us-gaap_ShortTermDebtTypeAxis
= enz_InstallmentLoansMember
/ us-gaap_StatementBusinessSegmentsAxis
= enz_ClinicalLabsMember
 
Other Liabilities, Current $ 281,000us-gaap_OtherLiabilitiesCurrent
/ us-gaap_ShortTermDebtTypeAxis
= enz_InstallmentLoansMember
/ us-gaap_StatementBusinessSegmentsAxis
= enz_ClinicalLabsMember