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Commitments and Contingencies - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified | 6 Months Ended |
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Dec. 31, 2014 | Jun. 30, 2014
Commitments And Contingencies Disclosure [Abstract] |  |
Warranty period, maximum | 1 year |
Liabilities for warranty costs | $ 0 us-gaap_StandardProductWarrantyAccrual | $ 0 us-gaap_StandardProductWarrantyAccrual

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- Definition Warranty period maximum. + References No definition available. + Details
Name: | egan_WarrantyPeriodMaximum
Namespace Prefix: | egan_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount as of the balance sheet date of the aggregate standard product warranty liability. Does not include the balance for the extended product warranty liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (c)(1),(c)(5) -URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249 + Details
Name: | us-gaap_StandardProductWarrantyAccrual
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant