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Bank Borrowings (Detail) (USD $)
In Millions, unless otherwise specified
6 Months Ended 0 Months Ended
Dec. 31, 2014
Nov. 21, 2014
Debt Instrument Variable Rate 3.75%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1  
Fixed charge coverage ratio 1.50egan_DebtInstrumentCovenantConsolidatedFixedChargeCoverageRatio  
Leverage ratio 2.50egan_DebtInstrumentCovenantConsolidatedLeverageRatio  
London Interbank Offered Rate (LIBOR) [Member]    
Debt Instrument Variable Rate Basis LIBOR  
Debt Instrument Variable Rate 4.75%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_VariableRateAxis
= us-gaap_LondonInterbankOfferedRateLIBORMember
 
Prime Rate [Member]    
Debt Instrument Variable Rate Basis prime rate  
Federal Funds Effective Swap Rate [Member]    
Debt Instrument Variable Rate Basis Federal Funds Rate  
Debt Instrument Variable Rate 0.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_VariableRateAxis
= us-gaap_FederalFundsEffectiveSwapRateMember
 
One Month LIBOR Member    
Debt Instrument Variable Rate Basis one month LIBOR  
Debt Instrument Variable Rate 1.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_VariableRateAxis
= egan_OneMonthLiborMember
 
Revolving Loan    
Revolving loan principal amount   $ 10.0us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
Limit on borrowing (as a percentage)   60.00%egan_PercentageByWhichPrincipalAmountNotToExceedCertainCriteriaAsCalculatedUnderCreditAgreement
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
Prepayment premium   1.00%egan_PrepaymentPremium
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
Balances of long term debt 7.0us-gaap_LongTermDebt
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
 
Term Loan    
Term loan principal amount   10.0us-gaap_DebtInstrumentFaceAmount
/ us-gaap_CreditFacilityAxis
= egan_TermLoanMember
Limit on borrowing (as a percentage)   60.00%egan_PercentageByWhichPrincipalAmountNotToExceedCertainCriteriaAsCalculatedUnderCreditAgreement
/ us-gaap_CreditFacilityAxis
= egan_TermLoanMember
Prepayment premium   1.00%egan_PrepaymentPremium
/ us-gaap_CreditFacilityAxis
= egan_TermLoanMember
Balances of long term debt 10.0us-gaap_LongTermDebt
/ us-gaap_CreditFacilityAxis
= egan_TermLoanMember