XML 49 R35.htm IDEA: XBRL DOCUMENT v3.8.0.1

Stock-based Compensation (Narrative) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Sep. 30, 2016
Stock-based Compensation Narrative Details
Total unrecognized compensation expense related to stock awards	$ 63,323	$ 52,623

X

- References

No definition available.

+ Details

Name:	EGHT_StockbasedCompensationAndEmployeeStockPurchasePlanNarrativeDetailsAbstract
Namespace Prefix:	EGHT_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Unrecognized cost of unvested share-based compensation awards.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

+ Details

Name:	us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant