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Related Party Transactions (Details Textual) - USD ($)	12 Months Ended
	Jul. 31, 2017	Jul. 31, 2016
Appboy, Inc. [Member]
Related Party Transactions (Textual)
Related party payments	$ 137,000	$ 141,000

X

- Definition

Related Party Transaction Aggregate payment made to related party.

+ References

No definition available.

+ Details

Name:	zdge_RelatedPartyTransactionAggregatePaymentMadeToRelatedParty
Namespace Prefix:	zdge_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Related party transactions textual.

+ References

No definition available.

+ Details

Name:	zdge_RelatedPartyTransactionsTextualAbstract
Namespace Prefix:	zdge_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=zdge_AppboyIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: